(just scratches head...)
Sorry, for the life of me I simply can't understand...
I've just joined this forum, and find it hilarious how critical people can be; All these motorized bike things we build are all make shift pieces of junk to have fun with. All you guys are like "you idiot... this is the right way to mount a rocket onto your bike" when at the end of the day, the main goal is to shove an engine into the frame, and make it spin the wheel... By any means necessary! Imthegrt1 Sick build man, just keep doing exactly what your doing; frame was to small for the engine, you seem to have solved that problem!
the round tube you've put at the bottom, is probably structurally more sound than a square tube would be -from an engineering standpoint, round pipes tend to have more strength than square, or flat -thats why bikes are made from round bars, not square ones... if there was an advantage we'd be doing it... Besides your motor seems to be in there tight enough with enough points of contact, that it wouldn't matter if you had a flat platform for it to sit on, or a wire, you can fasten it to other parts of your frame... KC
keep your mouth shut, and let the man build for god's sake..