hmm, so no bamboo folder?
ive built 3 bamboo frames so far. one of them broke due to it being eaten by fungus before i built the bike, and I did not notice.
the other two are doing fine, even the bamboo cargo bike which has carried as much as 200kg no problem (made of iron bamboo dendrachalamus stictus)
ive thought of a bamboo folder, but have serious doubts as to how to do it, as the other frames are all based upon the double triangle design, which keeps lateral torque from cracking the bamboo.
so maybe having a real long main triangle?
then you get into hinges.....
hmm a real challenge indeed!