Hello Ed,
Thanks for that reply. Fantastic!! Just what I needed. This is the same CUB I have been flying for a few months now. But still, thanks for the building info. I experienced the very same problems you have mentioned.
1. The struts....I had to extend them with alloy pieces to make the meet, but they are fine now.
2. The tail wire struts....I made my own alloy "L" fittings and bolted them right through the tail and elevator. Very strong now. I also used adjustable threaded joints here to be able to alter the tension if needed.
3. For the reciever I put in a plastic...lookalike..suitcase behind the pilot. Batteries etc...I have one for the ignition system also....are where you suggested.
4. The undercarriage....and this was my problem...that you have helped with. The rubber rings supplied, were the same you had. I left them, (assembled), in the workshop, only to find the next morning that they had perished and come apart. I then tried cable ties. No give...which broke on the first landing....no damage but she just 'squatted down' I then tried tent peg rubbers....very strong....but still too flexy. This is where am now with the Cub. I am In the UK for a few weeks and the Cub is in Spain. Hence the call for help. I am going to order now, and then fit when I get back to Spain, strong tension springs to the undercarriage lugs. Maybe just 2 or maybe 2 each side. These springs are 2" without pull and 2.6" fully pulled. It is a bit 'trial and error', but they should work.
I didn't mention the engine. I have put my first petrol engine in the Cub. Its a CRRC 26cc petrol. A bit powerful if anything. I would think , if petrol, a 20cc would be plenty.

Thanks again Ed, and any cross info on the Cub...let me know.

I am currently, (when back in Spain,) putting together an (ARTF), Goldwing Extra 300 LP (DLe 30cc petrol). Fingers crossed on that one......very light and extreme!!

Regards,

Tony...or in Spanish...Antonio