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I have tried to upload some photos from the GP Kit plans. If I get them loaded it should be the info you need?
They instruct you to first soak the balsa area where the ply is added with Ca for strength. Ply glued in with CA & area where wire rests against the ply re-enforced with CA. Note one side has a 1/8 aft cut out the other a 1/4. The 1/4 side is filled in with a 1/8 piece of hard wood. Goldberg used this landing gear mounting technique in some of there kits.
Remember that brushed motor was more than 200 gm. You will need the battery forward & perhaps need to add the dreaded lead weight.
Thank You for your help. I did get the Fun-One. As always I have find a couple of personal modifications that I want to make before the first flight. Then a double check of the CG & get the throws, sensitivity, & rates programed in my radio. Then I will be ready to go. Appears to me that it would be a great plane if re-designed for electric, shave a couple of ounces off here & there.
I was wondering what people were going to use for a motor. I am cheap & finally went with one from eBay, bought 2. Thinking 3-4 cell, 9-4 to 10-6 prop, looking for 300-400watt, a 2200mah lipo, esc@ 50a.  We will see what the meter says. The motors I first wanted from online hobby shops were out of stock. I like to fly at 1/2 throttle & apply power when needed to go vertical.
Next problem the brushed motor is 215 gm that GP put in their kit. Our brushless motor are in the 100 gm range. A brushless & a 4s 2200mah lipo is a bit over 215 gm. To balance the battery will need to be close to the motor without extending the nose.
Considering the battery’s new position, replacing the battery quickly & without much fuss, a hatch is needed in the nose. I have been thinking about lengthening the nose 1″ & a top hatch to make replacing the battery easier with my fumble fingers. Also leaving enough structure around the formers & firewall for strength.
Back in the ElectroStreak’s day everyone wished it was an Amazing Performer. By today’s standards she was marginal at best. She had to be light, a excellent motor that is broken in, racing Nicad type batteries, & effective prop. The old nylon Grish were OK for glow but still not as efficient as a good wood prop. I suspect she would have been very popular with todays equipment. GP had an ARF with a plastic Fuselage that did not help with the power to weight problems. Many became hanger Queens after just one or two flights.
Pictures to follow once I learn the ins & outs of modifying the pictures to post.
Oh lucky day! Club Swap Meet today. Minutes late & missed out on 2 ultra-stiks. Sold alot of raffle tickets & paid for the Night Timber that we were raffling. Now that other plane, Great Planes Fun-One, is that the plane I want to buy? Told the owner I need to look it up & think a bit about it. Searching on the laptop & bumbled onto this Electro-Streak build. I just bought a used kit on ebay. I did research it before the buy & read good things about it when powered properly. From what I read it is a worthwhile plane to build & great fun to fly, a real Hoot. I could not pass up the short kit. I was about to have a lazer cutter do a short kit for me, No need to now. Thanks guys!
Anyone one have an opinion on the Great Planes Fun-One? I have not found much info. Price certainly is right, looking for a good flying & performing plane like the ultra-stiks, glow powered plane design converted to eflite 32 electric but may need a 45.
I am going to start the planning & sanding for the E-S in Jan23