Ep 167: Oops, Dave did it again!

[00:00:11] Hello, hello everyone. Welcome to the RC Plane Lab podcast. I’m Ron, I’m Tom and I’m dave. You just stole my notes. What are you sorry? Well, I saw your heading there and I’m like: what the heck is he talking about? Oh, yeah, so anyway, first off, I want to congratulate spacex. Did you see that what spacex did this week? It was wild. Yes, I did, dave, didn’t, I did not. I do not pay any attention to spacex. So, long story short, they’re building the biggest flying machine ever.

[00:00:45] Biggest rocket, biggest thing to ever move under its own weight, and their goal is to have the whole thing. What biggest flying- which I shouldn’t say moving- enters the sorry biggest thing to actually fly heaviest and all that kind of stuff. But their goal is to make it fully reusable. Long story short, the booster that, like the falcon nines, like a first stage, if you think of it in those terms, that is called the falcon or not the falcon, that’s called the our ship. Thank you, no, the super heavy.

[00:01:16] Booster super heavy. It has, I think, 30 of their raptor engines on it. So 30 engines and they- they have successfully caught it on the little chopsticks, bringing it back to land from where it.

[00:01:31] Took off from where it took from where it launched yeah that’s pretty nuts if you haven’t seen the.

[00:01:35] Video. It’s worth looking at it. There are a few different views, by the way, that actually show the angle that it comes in at. I saw one that actually showed, like, how far sideways it was coming in.

[00:01:45] That’s nuts. Cannot imagine. The speed at which it approaches is crazy. Until the, until they fire the, the landing burn or whatever they call it. Yeah, it’s crazy, just nuts, like if you’ve not watched a spacex landing like them recovering a rocket of any kind. The first time you see something like this, it’s mind bending it is. It doesn’t look real, no it. It looks like a simulation almost. But

[00:02:16] It’s totally real. Yeah, unbelievable. It’s impressive. Yeah, congrats to them. That’s quite an achievement, yeah, so, anyway, that’s all I wanted to. What I found interesting, though, okay, was there was all kinds of coverage of the, of the catch, which deservedly so, yeah, but almost no mention at all of what- what- the starship, the upper stage or the orbital stage, whatever you want to call it, what happened to it? I mean, there’s very little information. I mean it did what it was. Yeah, it was overshadowed by

[00:02:46] First in history of ever catching something. But yeah, the upper stage, it was success too. Yeah, complete success. They landed where they wanted to, apparently because they had a buoy out in the ocean with video of it landing, of it, yeah, or watering. I guess it wasn’t really landing, I guess it was a splashdown.

[00:03:03] Hey, that’s better, that’s more apt, but yeah for it. I mean wow, just wow the thing, the booster, to put it in perspective in case people don’t know, because I didn’t know: 23 stories tall, that’s how tall this thing is. Yeah, like, think about a building around here, that might be about that tall. The hilton is 30. Yeah, so it’s almost that tall and that’s the biggest thing around here. Yeah, well, I think the

[00:03:29] Full stack is as tall as the hilton isn’t it yes yeah so and I call it the hilton it’s not the.

[00:03:36] Hilton anymore, but yeah, it’s always going to be the hilton. Yeah, but it is as tall as that building. Yeah, that’s just, and it moves, it’s mind bending and it goes like it’s crazy nuts, yeah. So, yeah, congrats, awesome, can’t wait to see what’s next. I think they said next year they’re going to try.

[00:03:55] And catch both the booster and the ship. That’s so crazy, that’s awesome, but anyway, that’s not our well, I guess it is kind of rc, maybe with computers and stuff, but I guess it does its own, all its own thing. It’s hobby, yeah. Well, it’s not a rocketry. Yeah, if you can do that, that’s fine. I’m trying to tie it into rc airplanes, but I don’t think I can do that. My history of rockets, right? No, I don’t.

[00:04:16] I know his history with rockets you’ve seen his history they tend to blow up in the airplane.

[00:04:20] Oh, those rocks. I thought he meant like. When he said history, I thought he meant like when he was in high school or college or something. No, he actually did like model rocketry- yeah, my dad did that, by the way. He did. He did a rocket that ended up being, I think, 11 feet tall. I didn’t know that. This is a sign of the times. They actually launched a live hamster, nice, yeah, and pita can call yeah, yeah, no, this was in like 50s, 60s. So did the hamster lick went? No, I mean, yes, it did, yes, yes, it did until it stopped.

[00:04:54] Well I mean the russians put a dog in space right well this didn’t go to space I think this went all.

[00:04:58] But 150 feet in the air and then no, but it was more than them. Sorry, dang it. You’re looking at me and that was on me. Put that on the floor, okay, it’s okay. Now it’s dave. I hear the. It’s not me. I hear the feedback from him. Oh well, feedback is gone. Guess who it’s not from? It’s not from you, tommy. I learned my lesson. I can’t hear the feedback. Anyway. Yeah, it’s all right. So let’s talk about RC airplane stuff. Shall we do that? I have a few things I want to talk about. First thing I want to talk about

[00:05:32] November issue model aviation has my review of the MB-339 in it I’m kind of proud of that’s cool.

[00:05:40] The number two. The issue is on my countertop in the kitchen and I admit that I have not. Or the new issue of model aviation, not the november issue, I guess, right the they were late, I think with the october, yeah, and I have not viewed that yet, but I anxiously await the november issue. Yes,

[00:05:58] Second published review. Yes, I thought it turned out pretty good. Go read it, go look at it and then go to our website for the videos. I have a couple videos that we uploaded. We just uploaded one, actually, of ali flying- not just the maiden, but he kind of put it to its limits it out. Yeah, onboard video and all that kind of stuff I think was really cool. Yeah, I had a camera on top and a camera on bottom. It’s a cool video. They were our gopro 360, whatever you call those maxes, I think.

[00:06:31] I think. So I had mine on top, yours on bottom or something like that, the other way around. Yeah, pretty cool video. I thought, no ruining it with music, all just jet sounds, and I actually prefer that. Honestly what? No music, no music. Yeah, me too, on flight videos anyway. Yeah, I want to hear it. Yeah, me too. I can listen to music anywhere. Right, exactly, so go check it out. rcplanelab.com slash MB-339. I think. Pretty sure. Yeah, I’m sure there’s probably a link to it on our website, right?

[00:07:02] Yeah, there you go, but I don’t remember what the actual that should be it. Yeah, and on the on the video too. I thought it was kind of neat. So, ali, if anybody’s seen him fly in person, when he does a lot of his jet stuff, he will go up to altitude and then dead, stick landed, yeah. So he shuts the engine off completely 399.99 Feet or however high up he is right, and then, like he did that on this video and he’s got a good couple minutes worth of glide, getting it down and lands it like without power. He.

[00:07:36] Can put it down exactly where he wants it and taxi right off the runway and stop better than I can.

[00:07:43] When the power is on, well, it’s impressive. Yeah, he for sure. He probably has tens, if not hundreds, of hours on that airframe alone, probably during the development phase, and all that stuff.

[00:07:57] He probably has more time on than anybody else I would assume so he’s quite comfortable with the.

[00:08:03] With the airplane, obviously. So, yeah, he’s able to do that with most of his airplanes. I’ve seen him do that. Yeah, that’s cool, and one of these days I’ll try it on purpose. Well, we have to fly a lot.

[00:08:13] Yeah, and you have to fly that plane a lot. I want to get to that point, so next year I think we’ll do that more. Yeah, with you having your jet, that will be my excuse to fly mine more, I guess I hope. Yeah.

[00:08:26] I yeah but anyway that was that yeah cool video go check it out let’s see what else oh we went to.

[00:08:34] The field a couple weeks ago. We did. It was not a great day. What are you talking about? Wasn’t that bad? It was not a great day. We all had some sort of issue. Oh well, minor. Yeah, mine wasn’t minor. Oh, that’s right, I forgot about that. Yeah, do you want to go over that first? Sure, I’ll talk about it before we get into that, because dave’s going to get more in depth on what happened to him. Dave and I have a

[00:09:00] Common issue that dave is going to go into detail but yes please tell us what so mine was plain.

[00:09:06] Stupidity and not p-l-a-n-e-p-l-a-I-n. Oh, so you were flying your viper, I was. I took off and flew right after you, and I usually have a three minute timer. That three minute timer tells me it’s.

[00:09:21] Time to land yeah we took off almost exactly I was like I took off and then you took off yeah.

[00:09:27] And so you were up flying and you weren’t coming into land yet and I was like, okay, I’m going to push this a little bit farther. But what I didn’t think of is I was making a few high speed passes that I should not have been making for battery conservation. Watch that meter.

[00:09:44] So, having said that, I did come into land. I think I was at, I think, the last time I looked down and thought, okay, it’s time to come in. I was at 330, 340, something like that, really pushing it, yes, and especially at the throttle settings. You were flying. That was the issue, yeah, and so it was a perfect like just coming in nicely for the landing. It was coming in a little farther away than I wanted to land, so I went ahead and kind of pitched it down and gave it, I want to say gas, but gave it throttle, and it started to come at me and then, like, I heard your plane flying still and so I didn’t notice that mine went.

[00:10:21] Into low voltage cutoff. Oh. So I tried to give it full throttle and then I was still kind of coming down, I had control over it and then all of a sudden stole infamous yep nose, dived right into the ground. Looks kind of like a banana. Now it does have a curve. So yeah, that was bad. It was about.

[00:10:43] 15 Feet in the air, yeah, and then about 15, 20 seconds later I landed. If that, yeah, and so this was something I wanted to ask you: do you think it was solely because of the way you were flying? Because the reason I ask is when I landed, when I pull- I have a habit of when I pull the battery out of my airplane, even though my smart transmitter will tell me what the battery is at and I look at that too- but I’ve got a checker and I checked it- my battery was still at like 32 or 35 percent. Yeah, on the checker, yeah, which is what I would expect, which is usually a fairly accurate

[00:11:20] Representation of the right condition. Now there I will say I did not spend nearly as much time doing the fun. I’m not going to say they’re not fun, because they are a lot of fun. Oh, I know. High speed, low passes at wide open. Yes, you did a lot more of those than I did. I did more experimenting with flight envelope type. Yeah, you were trying to get used to it because you drug your.

[00:11:44] Flaps in the grass. I did, it was cool. Yeah, so that’s, if you’re going to do that and not go full speed, you get more time, obviously, yeah, which that makes complete sense. But now my battery. Yeah, the.

[00:11:59] Battery I was using was a 5 500 not a 5 000. And I was only a 5 000. So that could be the difference.

[00:12:05] Too. And the other thing is, when you were on the ground and at 32 percent- that’s not 32 percent under throttle, true, so your voltage is going to drop as you start using it, yep, and the lower obviously you get, capacity wise, the closer you get to that, the less overhead you have. Exactly, and I, just I, at the worst possible time, had I had 10 seconds, not even not even 10 seconds. If I would have had, well, I’d say five or six seconds throttle blip and you would exactly pretty.

[00:12:38] Much. Yeah, I think when I did that is when it went into the, the low throttle cutoff, and then it just it didn’t reset right away and of course, after it’s laying on the ground, all mangled and frankensteiny, I still had the- the throttle stick was up all the way and then all of a sudden just takes off going again. I’m like son of a gun. Okay, well, that was on me, so I got a new one. We’re good. Yeah, I will probably fix that one sometime because I it’s not going to be that bad to do. No, but I was in a hurry.

[00:13:09] Because I thought we were going to go flying last weekend, which we didn’t yet. But anyway, yeah, that’s on me so and we can talk about that in a bit. Yeah, we will on how tommy ruined my saturday.

[00:13:23] Well, you’re not wrong, it’s okay. It is my fault it’s, but so was that. Yeah, I’m done, you guys go. So I also experienced an issue. I took as a four planes, I think, most of them nitro, so I- it was a nitro balsa kind of a day for me, which I loved- took the dualist out. Why I took the dualist? The t30, dave’s, t34 years now, the little blue toledo special, I call it the thing because we have no clue what it is. Forty dollars that flies is amazing. And then one other one- I forget what it was that’s.

[00:13:55] A bigger one. Oh, it was your the pit, not pits. Oh, the skybolt, yeah, super skybolt, yeah, that one. So I guess technically I experienced a couple of different issues, but anyway, I fly in the dualist and so I’ll preface this by saying: make sure, well, it ran fine. After some tuning, that airplane has old irvine 40s on it, which they’re not. They’re not at the same level of performance.

[00:14:31] Performance. I guess one is quite a bit older than the other so couldn’t quite get max without tweaking. Then, anyway, got it running. Yeah, took off and did I make a full lap? I think I think it was on the. It died on takeoff. You ended up. No, you’re talking about the skybolt, that was the sky, I’m sorry. So I took off and in the wind, whatever, made the right turn and then it was on the, the downwind leg. I guess that we heard something. We heard this kind of a low hum moan and I’m familiar with that.

[00:15:11] Sound split second, though. Oh yeah, it didn’t last long, but I know what that sound is, so immediately back off the throttle, brought it around and landed, no issue. But I discovered that my elevator- so the elevator on the dualist- if you guys who have been listening a while can think back when we built these- it’s a the elevator has a joiner in between the two halves- hardwood joiner and it’s a hardwood, yeah, and I think what happened? Well, anyway, that joiner was broke, so the elevator half that’s not connected to the servo was just out there doing its thing in the breeze and what I

[00:15:46] Heard was flutter. So and I think, thinking back, I think the way I have that airplane stored in my basement, the tail sort of hangs down there close to where the door, the entry door to the, to the back shop, I don’t know what you call it. I think I must have hit that with my elbow or something walking by.

[00:16:03] It and or somebody else did no it was probably oh never mind I was trying to get the blame off you.

[00:16:09] No, it’s, oh, it’s my fault. It’s my fault for not doing a thorough pre-flight, because it’s been a while since I’ve flown that airplane. I should have really inspected it and I didn’t, but I think that’s what the like- I don’t think it broke in flight- is what I’m getting at.

[00:16:23] I think it was broken before I took off. Oh see, I think that’s not correct. I think it was broken in flight. I think it was probably loosened if you knocked it, but I because the covering on the.

[00:16:34] Bottom was ripped off that was from the flutter yeah the covering was on the side that fluttered.

[00:16:43] I understand that flutter, but I, I still I think you would have seen, like if it was completely unhooked, okay, like completely broken, yeah, like I think it was probably. It was probably weakened, damaged to where the first time you gave it- damaged up or down elevator, because I did do a

[00:17:01] Pre-flight: right, and you saw it move, control and surface check: yeah, I did move, but yeah, it was damaged or whatever, just enough to where it did not have the and solid connection. Yeah, integrity, good word. So, anyway, uneventful landing. It was an easy fix. It’s already fixed. The covering is already fixed. It’s ready to go again and I took a newer irvine 40 that I have like seven of these things- I think I have almost as many of these as I have ys-120s anyway. So it’s ready to go and it was going.

[00:17:36] To be one of my saturday planes that we didn’t get to go do then it will be next saturday yeah so.

[00:17:43] Anyway, flutter, I got lucky. Like had I continued to fly it at a high rate of speed, the outcome may not have been as good, which that plane is quite capable of. It is now, yeah, now, with the engines tuned and really, really on the pipes, yeah, I think. I think it might be a 115 ish now, well, we can at least find out. Yes, we can. And then the other issue I had real quick before we get to dave’s, the skybolt. Basically, I was just trying to run it too rich, yeah, oh, is that what?

[00:18:18] It ended up being yeah just fought and fought and you leaned it out and boom hey I’m gonna behave.

[00:18:22] Myself. Well, it’s scary, those ys-120s. Speaking of ys-120s, that’s what’s on the skybolt and that’s what we’re eventually going to put on the trimotor. Those things make scary power, like I don’t know if you guys are familiar with. They sound ys’s, but I think that’s why, like I’ve just- I mean, for lack of a better word- frightened of the of the amount of power these things make and rpm. So, yeah, I was just running it too rich, thinking that it was. It was already at max rpm and it wasn’t really even

[00:18:53] Close so it was loading up. So I took off with the skybolt, didn’t even- luckily, didn’t even make a turn and it died on the on the climb out. So I just landed straight ahead and which is lucky.

[00:19:07] You can do that at that field, because it’s so very long field, long runoff, so yeah, but other than that, it was a great day, dave, so yeah, yeah, that was abrupt and I’m finished, dave, you’re up okay, so my

[00:19:23] Big boo-boo was the goblin is no longer with us now to refresh this is the airplane that.

[00:19:31] You experienced, we, I should say because it did it while I was flying it too. We experienced unintended surface deflection, correct because the servos we feel that were being overpowered by the

[00:19:44] Performance of the airplane that and just the surface was being flexed right because it wasn’t.

[00:19:49] Supported well enough, and then you came up with this cool solution. You just added a servo per panel with another set of linkages and it really did stiffen up. It really made a huge difference it.

[00:19:58] Really fixed most of the issues. Can’t complain about the aircraft at all. The aircraft itself, as it is designed, is a great flying airplane. It’s. It’s fun to fly- scary, but fun above half throttle. It’s scary, yeah. If it’s properly powered well, it’s not scary. There’s, there’s the thing, yeah, it’s so. It was a experimental platform for me to just to see how far we could push this thing, and we

[00:20:30] Found the never exceed speed limit. You found its limits? Yeah, it’s rather spectacular and it bit back hard. So we’re speaking of flutter. Yeah, so we did have original one flight on that saturday and we got what? Around 135, I think we got out of it right around that. Yeah, 135, and that was not pushing it as hard as it could go, it was just making one straight pass down the runway. So the second-

[00:21:00] Flight. I decided to let it wind up more, so made more than one pass and just kept it at full throttle and it kept accelerating. I was doing a big, basically a parallel loop with it and I heard. I knew immediately what it was and chopped the throttle. But it was 50 foot in the air and it was in excess 135 mile an hour. So 50 foot doesn’t take long to come, and then it was minus about three.

[00:21:28] Inches in the air yeah it happened so fast I barely had time to say -oh like that like at that speed.

[00:21:37] It happened so fast I know I chopped the throttle but other than that I can’t remember anything else.

[00:21:41] Just yeah, boom. It made a really, really cool imprint in the cornfield. You could see the aircraft in the cornfield- yeah, I mean the remnants of the air, but you could see the outline impression. You could see the two lines representing the leading edges of the wing and then a round spot connecting them like impression in the ground. It was actually quite. It was quite cool. I’ve never seen one quite like.

[00:22:04] That, yeah, we went and picked up all the pieces- which most of the pieces I think I don’t know. Originally, yeah, originally we thought we had all the pieces and I realized the motor wasn’t there. Yeah, and bob found the motor- what like 25 yards away. It was at least 25 yards away from to the side.

[00:22:20] Yeah, of the crash, which is wild. I thought, well, it’s a pusher, so probably kind of went in at one angle, and then I think it whipped off to the side. Well, that could have been too. Yeah, too, the aircraft.

[00:22:32] Itself was actually not bad for as hard as it hit the ground. The problem was anything that was in the airplane went through each itself. So the two new batteries were completely destroyed. I was scared to even put them in the truck. They stayed at the field. The receiver was broken in half. I’ve never broken a receiver in my life, not to mention breaking one in half. I have broken one.

[00:22:57] And the speed control I believe is what broke the receiver in half on its way out of the airplane.

[00:23:05] Yeah, and the capacitors were all smashed, the board was broken and, of course, all this equipment was brand new. I’ve got so much anymore. Well, it was three flights old, four flights, three and a half.

[00:23:17] Yeah, well, the SkyID survived. At least SkyID, we think. Mostly thank god I forgot to bring it up because it was mine it. It broke the connector. Oh, I’ve got it. It pulled the wires out of the.

[00:23:29] Yeah, I haven’t looked really closely at it, but it did not have any surface damage, so I think it survived. If not, I get you a brand new. No, I’m not worried about it. No, it was Ron’s idea to put it in.

[00:23:39] There was it, yeah, yeah. Then it’s like, hey, can you? Well, we wanted I mean everybody’s talking about, well, how fast is it? Well, I have this thing with me, let’s figure it out, let’s go, and I really would.

[00:23:50] Have loved to know how fast it was going and how many g’s it pulled when we hit oh my gosh yeah.

[00:23:54] Can you imagine a lot. So I mean it was doing at least. I mean, let’s say, conservatively, it was doing at least 135. When I hit the ground it was going faster in 135, right, but I mean worst case scenarios at.

[00:24:06] The slowest it was because it was wide open. Yeah, like I mean, it did not slow down in the least when it hit the ground. No, until it hit the ground, then it stopped really fast it did. The wing panels didn’t look that bad, though. The wing panels were actually completely reusable if it didn’t break the plastic that was on them. Oh, the little joiners- yeah, there was. There wasn’t even a ding, which is shocking considering kind of dinged up. When I saw them- oh did they? I thought maybe I didn’t see many things on them, but all it did was take and break the plastic where it joined the fuselage.

[00:24:40] And that’s why they failed. Yeah, and one of them had a slight little divot in the leading edge. The other wing panel was. It looked like it was brand new, which is shocking. Yeah, absolutely.

[00:24:54] The impression that it left on the ground it must have hit completely square yeah something anyway.

[00:25:00] Yeah, it was a spectacular crash. The reason for the crash flutter, now, different than yours. Yours was a control surface flutter, which is continuous flutter- okay, mine was due to. It’s called divergent flutter. It was an entire wing started twisting. Ah, yes, okay, and it built amplitude. Yeah, quickly, very quickly, like split second quickly, yes, and what it actually ended up doing is the way the fuse, the wing, mounted to the fuselage. It’s on a fairly stiff carbon fiber.

[00:25:36] Square shaped square tube. Yeah, that slipped into another carbon fiber square tube, very, very rigid, very, very nice. And then the root of the wing was then bolted through the blow molded fuselage and that bolt went through the abs, plastic or whatever it is on the edge of the wing and secured it there. What happened, I believe, is the right wing, because the left wing did not look like this. The right wing fluttered and ripped itself from the fuselage. When it did that, it allowed the wing to

[00:26:10] Twist even more very, very quickly. So it took all the torsional rigidity out of the wing and it pulverized that inner spar. When I went to actually pull it apart, when I got home, the spar itself- the carbon fiber- was just shards of strands. There was no- yeah, there was no spar left. It was just strands of carbon fiber. Oh for sure that’s flutter, and it just pulverized it. I’m surprised.

[00:26:36] It didn’t like start spinning then because that one side is going to act it would have it didn’t have.

[00:26:41] Time, if I would have, if it had time, if it had been higher and like straight and level, because you were kind of in a dive you were. You were kind of making, like you said, the loop he was trying.

[00:26:50] To get as much speed as possible having gravity help had you been level and higher that’s exactly.

[00:26:55] What it would have done. It would have done a Reggie, it would have done the worst, and then it would have been coming down like a frisbee. Yeah, it would have spun. It probably would have saved the batteries.

[00:27:01] Too but probably would have saved a lot of stuff yeah because the other wing would have stayed.

[00:27:05] Attached and helicoptered. Yeah, just yeah, flat spun or whatever, but no, dave had to try to go fast. I don’t know if you guys have noticed, but dave has a tendency to- to put it nicely- overpower.

[00:27:21] His airplanes like or try to like the east I mean the e-streak is overpowered but it doesn’t go very.

[00:27:27] Fast. It’s torquey, well, yeah, well, it climbs like it, does it? Oh, it’s, yes, a rocket? Yeah it’s, it is faster than any of them we have. But barely well. Whose is close? Mine’s not close. Mine’s, daniel’s is pretty close. Oh, is it, yeah, oh, okay, yeah, what about mine? Oh, wait, wait a second. Yeah, I see what I. Oh, yeah, you.

[00:27:51] Don’t I want to make sure I called that out before somebody else did jeez so this is not the first.

[00:27:58] Time I’ve experienced fluttering an airplane. Let’s see, I’ve lost four airplanes due to flutter. I lost, lost my radian xl to over speed in the airframe I had, which I didn’t think it was going that fast, but apparently it did. It was on a dive too, wasn’t there’s a limit? Slight dive. Slight dive because it was getting far away. I had tons of altitude so I wanted to kill some altitude and bring it back a little faster, so I just pushed the nose over a little bit. It didn’t accelerate more than a few feet and I saw the wings start twisting, and that’s a long, narrow aspect ratio wing. So I mean, if

[00:28:33] Anything’s going to over speed and twist. You’re going to see it in a glider. Yeah, then I took and lost my little foam- f15, mig 15, scratch belt fan foam or fan fold foam. Once again, it was just a high speed pass with it flutter, pulled the throttle back and then it’s too late. It just completely destroyed itself. Yep, I rebuilt it. I built a brand new one. There’s nothing to rebuild.

[00:29:03] And I added an additional spar from what was on the plans and I then I also fiberglass the wing, and now when I fly it, I am mindful of no high speed, high energy passes. Only full throttle is only used for straight up and down, or straight up, no down, yep. And I’ve not had any problems since, although I have seen it flexing and it’s like, okay, throw back, throw back, throw back. There’s the cusp. Yep, you’re no faster. Of course, we lost the goblin and many, many years ago I lost a scooter quick.

[00:29:36] Quickie 500, quickie 500. Airplane in combat. So streamer combat. Oh, and just overstressed the airframe. This one was caused by surface flutter instead of wing flutter. This was surface flutter and it stripped the gears in the servo. And this one didn’t technically crash, but it did.

[00:29:58] Not crash. It was an arrival with a heart. It arrived with a hearty thud, yeah, but it was salvageable. No big deal on that one. So go back to quickie 500 combat. I don’t think I’ve ever when did.

[00:30:11] This was the free-for-all. In taylor, missouri, they used to have that fly in and it was a free-for-all combat. So 50-foot streamer, so whatever airplane, they weren’t just all quickie run hundreds. But you brought aha, okay, I bet yours was the fastest one out there. Well, you wonder what was in the nose? Ys45, yeah, so yeah, it was substantially fast. Yeah, do we want to go over reasons? Yeah, or maybe what.

[00:30:40] You can do to prevent flutter, correct? Oh so I’ll start. That’s up to you now, so you can do lots of things. The most, the most obvious is to make sure that the linkages are nice and tight. There’s not a lot of play in, like the clevises, the control horns, the servo arms, things like that. Make sure your clevis pins not tight but not loose in the holes of the arms, no slop whatsoever. That’s kind of why I like I’ve gone to ball links on most of my stuff because there’s no slop with those.

[00:31:13] You can also seal your hinge gaps. Yeah, nice tight hinge lines, or be mindful of the gap when you build them. That’s another way you can avoid flutter, and you can also avoid flutter by avoiding high-speed.

[00:31:28] Dives in front of the flight line in an airplane with like three times the horsepower you’re supposed to have, don’t over speed the airframe, yeah, yeah. So there’s a structural limit that any airplane’s going to come apart. It’s the vne number. Yep never exceeds speed limit. So but yeah, the big one is the no slop in the system and it’s going to vary depending on aircraft. Sure it is, yeah, I mean long.

[00:31:53] Push rods are typically more prone to flutter than short, stiff push rods, 3d type airplanes with huge surfaces, way more prone to flutter surface. Yep, that’s why they are designed to fly somewhat slowly, although now some of the airplanes that are doing xa or extreme aerobatics, rifle rolls and things like that are done wide open as fast as the airframe will fly. But they do those with the surfaces deflected which, when you preload the surfaces that somewhat takes away the flutter effect.

[00:32:25] Because you’re loading the surface. So mindful of that, if you’re flying 3d planes at high speeds, you’re very much prone. If you’re not going to load the surfaces, you should expect flutter.

[00:32:39] Counterbalancing your surfaces another way to help prevent. So explain what a counterbalance is. Some counterbalance is lead added to the leading edge of the, ahead of the hinge line, whether it be in a aerodynamic counterbalance, like on a cub with the little part that sticks up over the rudder, or you can actually add a little blob of lead. I’ve seen sinkers used on a bent wire that sticks out ahead of the hinge line. You want the surface to balance on the hinge line? Yep, ideally.

[00:33:12] When you disconnect the any control linkages, the surface will stay where it’s at, it won’t droop, it won’t neutral. Yeah, yep, so that’s. They can do that either via weight, like he’s talking about, with an actual physical piece of lead or weight mounted to the control surface extending ahead of the hinge line, or you can do it via aerodynamic means with a piece of the control surface ahead of the hinge.

[00:33:36] Line yeah which when it’s sitting on the ground is not going to balance but in flight in flight yep.

[00:33:41] Which is why you see all these extras and edges and yaks and all that are designed to have the, the ears that come out like I’m trying to put it in: yeah, they look like ears. Yeah, because they’re.

[00:33:53] That stick ahead of the hinges. Yeah, yeah, and you can even go further with that, as you can add, lead to the leading edge of those extensions to physically balance it, just not aerodynamically. So, yeah, what else? Torque tubes: those are very prone to flow and that’s what got me with the scooter, was the.

[00:34:13] Torque tube. Yep that we’re talking about the, the wire that runs within a piece of brass tubing that has a bend on either end. One end of the wire is epoxied into the control surfaces, like the old way we used to do ailerons or a joiner wire on elevators, and then the other end is bent up and that’s what connects to the servo. Those are notorious, yeah, for flutter. The wire will waller out the hole in the surface and then you’ll get looseness there and that’ll cause flutter, or and then you use a.

[00:34:45] Mechanical advantage it has due to the bends? Yep, so I’m assuming that’s why most newer airplanes have gotten away from using those, at least higher performance. Yeah, it’s simpler, straight shots.

[00:34:57] Honestly, I think what is what has sort of made that method obsolete is the fact that we use separate servos on the wings. Now, yes, they’re not worried about so that we canals. Yes, back in the day when a four channel radio was 500 bucks, yeah, I mean, a servo was 50 bucks, yeah, yeah, we wouldn’t, we wouldn’t waste a channel by putting another servo. Now that servos are basically disposable, yeah, some, yeah, pretty.

[00:35:20] Much, especially if they’re in goblins. Yeah, there were 11 servos and those things survived. Those are one of the few things that. Oh really, I got four servos back and the velcro battery strap and that was pretty much. It is the motor okay. I don’t know, the wire was ripped on it, but the motor itself looks okay, but I don’t have a speed control to run it up on to see if it’s good, so I’m assuming it’s okay.

[00:35:40] But not certain. Yeah, I’m just lucky with being on the back of the plane. Maybe, maybe it didn’t bend the shaft or something. Yeah, launched 25 feet. Yeah, or 25 yards, not 25 yards yardage. Yeah, it was good distance it was. So there you go flutter better, try to avoid bad. Yeah, and the telltale.

[00:36:01] Sign is a hum. If you hear anything that’s different, immediately pull the throttle back and pull the nose down. It sounds like an a10. Yeah, exactly, if it does. Yeah, but get that nose up to load the surfaces, yeah, and slow it down. Yep, it’s a very distinct sound, and once what it is.

[00:36:20] You can pick it out instantly and you can tell who knows what it is, because as soon as that’s heard at a field, those that know what it is, their eyes, go straight to the sky trying to figure out which.

[00:36:30] Plane is going down and even if it stops immediately land yeah don’t continue flying oh this is.

[00:36:37] Okay, it stopped doing it, no problem now. No, if it did it once, it’ll do it again, and probably worse. Yeah, I mean now everything’s loose. It could be something as simple as loose covering, but you want to find that out. Yeah, loose covering, generally speaking, is a higher pitched yeah sound, but the onset of flutter is usually a low hum. That is a very distinct yeah the divergent.

[00:36:59] Flutter like I had with the wings it was a lower pitch than your elevator issue those are typically.

[00:37:04] Higher pitch. Yeah, I think you are probably hearing with your elevator thing. You were hearing a lot of the covering also, because that one had a kite like sound to it. It did, yeah, and I think that’s.

[00:37:19] Probably. That’s probably what I sound- that we got, thank goodness, yeah, because if I continued flying I probably would have lost at least half the elevator, yeah, if not the whole one, so which I’m glad I didn’t. I like that airplane, yeah, me too. So there you go. Flutter. Did you want to talk about that? You absolutely can if you want. Okay, so getting into the winter building season? Well, that’s really I.

[00:37:47] Want to rush it we’re in the fall here we’re we’re in the fall frenzy trying to hurry up and get all.

[00:37:54] Of our flights in, yes, but soon, unfortunately, it will be time to put all the toys away for the winter and then focus on other things like building stuff- sorry about that- like new toys for the spring. So it’s a good reminder to disconnect all your batteries, like don’t leave those nycads plugged in, bring them in the house if you keep them outside. Or nickel monohydrides, yeah, unplug them, bring them in, take them out of the airplane, ideally, and put them on a bench where you can easily put a top them off throughout the winter. I’m talking about nickel monohydrides.

[00:38:27] And nycads. Go over your airframes. This is a good time to set up your repair plans for the winter. Yeah, build yourself a list. Oh, this airplane needs this. I would like to do the redo: the push rod on that one, or landing gears- a little wobbly on that one, exactly, I got a retracted sticking on this one, whatever- and stick a label on your plane so you don’t forget. Hey, that’s a good idea. We’ll post a note with the notes that you wanted to do so, and then it says done when you’re done, and then you can ready pull it out, throw it away. Yeah, so go over all the nuts and

[00:39:01] Bolts and make sure everything’s good to go so that when check your surface for slutter, for looseness, yeah, yeah, if you got some extra wide hinge gaps, go ahead and seal them. This winderm tape works great on that. Yeah, on some of the smaller airplanes that works. So if you got a

[00:39:19] Monoco covered balsa plane. I like to use monoco to seal it from the bottom that way. That way you don’t see it from the top. So yeah, put your planes away safely. Change out your fuel line. Oh, that’s a good tip too, especially the gassers. How long do you get on those? They say three years. I’ve seen them go a lot longer. I’ve seen them go shorter. I think it depends a lot on the quality of the fuel.

[00:39:44] You buy and probably the amount of use it gets. Yeah, if it’s it’s dry, it should probably last a little bit longer than if it was used and then dried and then used and dried, yeah or no, maybe I’m.

[00:39:55] Backwards on that. No, I think you’re right, because the, the ethanol and the fuel starts to dry it out. Dries it out, yeah. So it pulls the oils out, yeah. So there you go. I’ve got some that are five, six.

[00:40:04] Years old now then they’re perfectly fine although I probably really still should change them just to.

[00:40:09] Be safe yeah at least the clunk line anyway so it’s like the important one yeah so there you go.

[00:40:15] Here’s your annual reminder. So, for electrics, what do you have to do? Look for loose nuts and bolts, motors working their way, loose props to the nick in them, or a crack, yeah, hiding underneath that spinner that you can’t see. That’s exactly right. Take. If you’d never take it apart, take it apart. Look at all your servos. Make sure they’re not ungluing themselves or unscrewing themselves. However, they haven’t been there, okay. Let’s be honest, though. Who does that every year? Do you really go through every airplane you own? I go through it before I fly it the next spring, if I know there’s a problem.

[00:40:48] Then, yes, it’s like, oh, the last time I flew it last fall it acted kind of weird. Then I’ll go through it mostly when I break them out in the spring. Then I’ll go through them real quick, yeah, before.

[00:40:58] I throw them in the car. Mostly I’m talking about airplanes that are going to need attention over winter. Now’s a good time to put it away so that you can give it the attention it deserves. I.

[00:41:08] Know, the last time I ran my fokker d7 it was a little gaggy on the carburetor. It needs a carb rebuilt. There you go. So there’s a winner to do it. Yank the carb and rebuild it. That way it’ll be ready to go. It ran last year. It just a little yankee, yeah, but I don’t go through every airplane. I don’t either.

[00:41:26] I, I don’t have mostly airplanes that, so a lot of the airplanes. Well, maybe not this year, but certainly last year I didn’t touch a lot of my airplanes since I had put them away from the year prior. So I repairs for the winter. That way when spring gets here you don’t have to worry about repairing you.

[00:41:53] Can just go flying and give you something to do over the winter yeah or plan on builds well that’s.

[00:41:58] Yeah, the other: yeah, I like to get my repairs done. Like it’s like a weight on my shoulder. If I know an airplane needs some attention, it’s hard for me to focus on anything else until that airplane has got.

[00:42:09] The attention it needs. I’m just the opposite. If anything’s broken, I have to fix it right now. Yeah, that’s except for I just let the ultra 600 sit since may. You did. Yeah, I did. That’s surprising, and that surprised me too. It’s like: man, what, what am I doing? I need to get this thing fixed.

[00:42:26] And it’s almost ready. We all know. Oh, it’s ready to go now. Oh yeah, oh, that’s right, I found the props and we don’t know how they shipped me my motors. So, yeah, what were the props? They were actually in the box of spare parts I took to joan. Oh, ah, well, that makes sense, because it makes sense, because you took it to join all. Yeah, I normally keep those props in the box I store the aircraft in. For some reason or another, they ended up in the spare parts box. At least you found them. So you’re just leaving all that stuff in the joan all box for next year. Then, yeah, right now the props are in the aircraft box where.

[00:42:59] They’re supposed to be so I can find them when I’m at the field and run into an issue yeah so.

[00:43:07] Yeah, real quick, I’ll talk about saturday Ron and I. Did we include? We didn’t include dave on our plans, did we? I knew nothing about it. I sat home all day and sulked: oh so did I well, so did well, so did Ron, Ron and I had these plans. It was my birthday saturday. Last saturday was my birthday, thank you, and we were going to happy birthday. I don’t know what you mean, thank you. We were going to go to eli field with truck loads of airplanes and fly all day and then at the end of the day where we’re.

[00:43:40] Going to come back here and have dinner and stuff sounded like it was going to be a wonderful saturday. Here is in my house- oh yeah, sorry, here at Ron’s place, but yeah, I got sick friday night and so this is totally not airplane related, but I feel like it’s worth talking about. So I don’t normally vomit like I haven’t. I haven’t vomited. I hate in years, like tens of years. I will fight it right because I just hate. I just hate the feeling. I hate the whole, all of it. I hate everything about it.

[00:44:14] So I will fight it. I’ll go through the cold sweats and the drinking, the ginger ale or whatever to try to calm everything. So I don’t puke right. Well, friday: I don’t know if I, if it’s something I ate or whatever, but friday night about bedtime I started not feeling great stomach, a little sour, a little gurgly, mergly. So, like it’ll pass, I’ll take some ibuprofen and wake up in the morning and we’ll go do our run and then we’ll go fly and it’ll be a great day about 1: 30 in the.

[00:44:47] Morning could, because it had been so long since I had last gotten sick like this. I didn’t remember Ron’s turning green over here, yeah, I didn’t remember the feeling that immediately preceded, yeah. So I woke up at 1: 30 with this feeling: I’m like, I think I’m, I don’t think I can fight this, I think I’m gonna hurl, I think I’m gonna bomb. So, yeah, from about 1: 30 saturday morning to about 4 o’clock in the morning, it was not a good time, and then, at your age, you got to worry about throwing your back.

[00:45:23] Out exactly. Well, funny, you should say that because as I was curled over the commode, yeah, I was getting cramps in my legs. No, I was, really. I was getting cramps in my legs. So I was trying to find a comfortable position so that my legs weren’t cramping, and while I was puke, it was a good time. Oh, so yeah, and then saturday I was just spent, so I laid on the couch and did not move all day. Saturday. Did your wife hold?

[00:45:49] Your hair back. For those that you don’t know, that Tom is completely bald. Yeah, I’m the bald one, so I don’t have any hair. No, she didn’t have to hold my hair back, but no, I’m pretty sure she slept through.

[00:46:05] All of it. Really well, I mean I was trying to be polite, not wake her up, but it’s trying to vomit private and then I’d get your rush out the bedroom and close the door behind me and then rush into the bathroom and close that door behind me so hopefully the door, the noise didn’t make it past the door. Yeah, oh, so on the weekend before. So I apologize to do that. I apologize that I ruined your saturday. It’s okay, I got other things done and, yeah, the weekend before was laurie’s.

[00:46:35] Birthday and she also hurled not because she was sick though that was from that was self-induced that.

[00:46:40] Was over drinking good times good times anyway so we will try hopefully again this saturday so.

[00:46:50] Day weekend this saturday. The weather looks really good, the plan is wonderful, don’t jinx it. I said looks. You said looks really good, just don’t jinx it so early. Like well, obviously I’m gonna go run or whatever, but then I would like to be on the road no later than 10.. I would like to be on actually earlier if I can, but yeah, the runner, I’d like to leave here about nine, okay. But yeah, we’re gonna go to eli field and fly all day. You guys are gonna force me to end up joining, aren’t you? Yeah?

[00:47:23] That’s the plan. It’s so con. Well, I don’t want to say convenient, it’s not convenient, but having that paved runway to fly our smaller airplanes off of is so nice. It makes a huge difference. And, just as important, electricity- yeah, there’s. So the recharging and stuff like: yeah, it’s, and it’s also nice having.

[00:47:44] The pavilion to be under and in the shade until it’s time to fly and yeah there’s lots of there’s.

[00:47:51] Lots of reasons to. It’s a quality field, yeah, and I can honestly say I mean like every time I’ve been there, everyone’s been nice. Oh, I’ve never dealt with a. Yeah, I mean there’s a rudy tootie, yeah.

[00:48:07] Me either. So yes, sometimes you should, you should join. Sometimes some people are over talkative even, and you don’t get as much flying in, but that’s fun too. So, yeah, I enjoy. It’s all about being an aspect of it.

[00:48:20] Yeah part of the group and but yeah that’s the plan for saturday and you can fly as one of our guests.

[00:48:26] No problem, I actually have a little bit of conflict. Oh, I’ve got agility trial this weekend. I gotta drop the trailer. Tomorrow it’s friday, saturday, sunday, and I gotta pull this trailer back- sunday.

[00:48:37] Boom, but what are you doing? Saturday agility trial: he said friday, saturday, sunday- well, but he talked about the trailer. He said he was dropping it off thursday and then picking up sunday. He didn’t say.

[00:48:47] What he was doing friday and saturday I’ll see if I can blow saturday off but I definitely have.

[00:48:52] To be there sunday. I’m definitely blowing saturday off when we’re gonna go fly. Might be one of the last. Don’t say that, I want more. Well, it’s so weird because today- well, let’s see. Last night and tonight- freeze warnings. We got down below freezing, so this is now the weather of: oh, my tires are low as you get in your car and you pull out of the garage and they’re fine. Then, 10 minutes later, as you’re driving and they cool down, it starts yelling at you. That’s quite annoying, by the way. It always makes me think something is actually wrong and I have to want to rise my trailer this weekend. Oh, that’s you should.

[00:49:25] Have done that already, only because it froze the last two nights. The last two nights it wasn’t that bad. Okay, it was a hard freeze, it was a frost warning. I thought: no, there’s a freeze warning.

[00:49:38] Hard starts enough heat in it’s fine okay well you’ll know when you pee in it next year.

[00:49:44] One year I did not get it completely winterized and it blew the faucet off in the kitchen.

[00:49:52] I mean he’ll need it for joe and all next year right yeah well he’ll have to repair it before joe.

[00:49:57] And all yeah just make sure it’s good I got the bathroom door laying on the table right now anyway.

[00:50:01] Well you don’t need a bathroom door on your journal yeah it’s just you and daniel.

[00:50:06] He doesn’t even use the bathroom in the trailer. There you go. He goes out back. Why not like a cat? Is there anything else that we have missed? No, I think that completes our episode of randomness.

[00:50:19] Randomness, so don’t forget. Go to the website, watch the videos, watch the well videos, because you don’t really watch any text or reviews. Read them. Read them, look at them, enjoy them. We worked hard on them. You worked hard on those. Yes, I’m getting a bug to write something. You should do it. You should the.

[00:50:45] Website needs content dave’s corner ooh then you can put in there whatever you want no one will read it.

[00:50:54] It’s just all complaints I was just gonna say things that make me unhappy by dave.

[00:51:01] Oh that’s oh boy get off my lawn get off my lawn all right you guys all know I’m not that bad.

[00:51:12] I feel like you bring a balance, like Ron is always the super positive. Everything is awesome, roses and flowers, and then, yeah, you bring in the reality, and I’m just kind of

[00:51:23] Bounce back and forth yeah I’m waffling so how is my not reality though I like to look at the good.

[00:51:28] In things it’s more fun that way I think it’s bad I didn’t anyway I’m not as really as sour as I.

[00:51:37] Come off on this or in life or when we see him off of this or on discord all right different.

[00:51:48] Different story. There is something I’m looking forward to this winter. Oh yeah, yeah, I want a night fly over snow. I’m thinking that would be cool, so cool. Yeah, I can’t wait for a nice snowy night, that’s.

[00:51:59] Hot would be cool. So what would we? Well, all tricks is well, did we? I don’t know if we talked about it on here, if I was talking to somebody else, but apparently snow is good to use instead of the skis. Oh, floats. Floats work better. Take your rudder off. Yeah, maybe it was on here we talked about, I don’t know, but I think it was touched on it. Yeah, I think it was. That was precipitated by talking to somebody else about it. But yeah, I think that would be kind of neat to do. Yeah, let’s do that. Yeah, twin otter on floats, and I need, I need a good night. Does it have enough lights, though? The twin

[00:52:32] Otter, it wouldn’t be at night for that one. Okay, that’s what I mean. I need a good night flyer that I can put. Yeah, I mean the ultra says would be perfect for that. Yeah, I still, yeah, anyway, I still want to put lights on my slow ultra stick, but I actually want to buy another slow ultra stick to do that too.

[00:52:49] Does that make sense? Yeah, like I don’t, I don’t know, I don’t want to ruin one. Yeah, kind of I get that, but anyway. But yeah, the stuff we’ve been right flying even over grass, it really lights up.

[00:53:03] The ground, it does just get that reflection. I think it’s so cool, yeah. And see the other thing too: now, like night flying is no longer going to be like late, it’s gonna be 4 pm. It used. It used to be we, we were out right after work. Yeah, it used to be. We were out there till 9- 30, and then it’s okay. Well, now we gotta fly because it’s finally dark. And now, you’re right, it’s gonna be straight from work out to the field and it’s gonna be pitch black by five. Yeah, 5, 30.. So why didn’t like? Why are we just now?

[00:53:28] Coming up with this like we have time why haven’t no but I mean why haven’t we done this in years.

[00:53:33] Previous. We haven’t done night flying before like this really has been the first year we’ve done a lot of night flying. Yeah, that’s true. I mean I don’t think you’re right. I don’t think we ever knew newt flew. I don’t think we never night flew before the shiny. Well, the ultra says we’ve flown them at.

[00:53:52] Night but they don’t really light up the ground real good I mean you could see the shiny before that.

[00:53:56] Though I don’t know I think it was give or take the same time I think because the shiny was yeah I’m.

[00:54:05] Pretty sure the shiny was first maybe the shiny is what made us buy the ultrax’s because they had.

[00:54:09] You could get the light kits for them. No, what made us buy the ultrax’s is we actually saw them flying at our sea fest the first year. We went and the lights were just under added bonus. Yeah, because we thought those were the dingiest things when you saw them. Until they actually see them fly, it’s like: oh my god, this is fun. And then you fly one, it’s like: and that’s even better, yeah. So yeah, I, I’m pretty sure, like I, I didn’t have any night time flying stuff before the shiny. Okay. Well, there you go. Yeah, we’re gonna make that happen this year. It’s gonna be fun this year and next year. This, this is.

[00:54:43] Whenever it gets snow, I gotta get something ready. Yeah see, I wonder if you could put floats on a on a viper. Maybe you could just belly land it. I think hold on tail. Heavy’s done that with a.

[00:54:55] Mono float, that’s right. Oh, really, tail heavy. Yeah, the youtube channel, yeah, they did that, I think. What was it? Was it a viper? I don’t think it was a vibe, it was a viper-ish. Yeah, future maybe or something like that, but yeah, they, it would have enough power. Oh, yeah, yeah, they put one single float, I think, on it and then I think it may have had spawns and I can’t remember how they did the wing.

[00:55:15] Test yeah they flew a jet off the water try and find I was thinking about snow but yeah that would be.

[00:55:21] Okay, I need to try and see what kind of floats I can get. Yeah, you have a viper. You could probably modify. That could be my just jerk around and jerk around, mess around, whatever. Or just get some of those dubro skis and put on there- nice, because that would be fun to do that at joan. All with floats on the viper too. That will be different. We’ll see what happens. That’s all I got. That’s all.

[00:55:45] I got. I got a set of floats sitting in the garage. You can have nice. They are brand new in the box, never opened for my grand tundra. Oh, cool, perfect, that would be perfect. Why don’t you? Because I don’t have a grand tundra anymore. It kind of caught fire. Oh, that was that one, yeah.

[00:56:00] That one what do you have now the piper the no I’ve got the fms 1700 millimeter super cup.

[00:56:07] Which now has newer tires well would it fit on that it can’t it came with floats I already got.

[00:56:14] Perfect then, yes, I will take that. There you go, awesome, and you want to set a big wheel to talk him out of it. Well, I just I didn’t want him to say: yes, thank you, yes, thank you, yes, no problem.

[00:56:22] Like I said the box is still sealed cool nice I’m gonna go skis somewhere now you’ve got a project for.

[00:56:28] The winner. Yay, not like I didn’t already stop it. I know this place is a mess. Now I don’t see. I don’t see anything that’s not assembled around here. There’s the negative again. Huh, all right, I’m done. Are you done? I am done, I’m finished. I’m thanks for listening. Good night, good night, good night.

[00:56:47] Hope you enjoyed this episode of the RC Plane Lab podcast. For topic suggestions, to ask questions or to give any feedback, connect with us at rcplanelab.com or email us direct at either Ron at rcplanelab.com or Tom at rcplanelab.com. You can also text us or leave us a voicemail at 818-351-9846. Please subscribe, rate and review us on your favorite podcast app until next time. May your landings be gentle.