Let us know how many miles each bike gets before their aluminum frames cracked, and where the cracks happened.
CrazyDan.....that is my concern. I was all ready to go with a 212 Tillotson engine but after getting my Phatmoto AT and weighing the 79cc Lifan that comes with it....the engine weighs 20.8 lbs out of the box.
I am concerned anything that is much heavier will over load the frame and cause problems in the long run.
Has anybody looked into using a Yamaha KT100 engine in their Phatmoto? The KT100 weighs 21 lbs and you'd have to add a clutch.