I've had my motorized bicycle a few months now, around 800 miles on it so far.
I upgraded the handlebar, stem, wheelset and front rotor on the bikesdirect mtb. Whole bike original cost was $300
Fast forward, now that I have more experience with these, I realize I probably should have gotten a better frame, one without ridiculously huge tubes. Not to mention a short headtube and minimal room for the engine.
I'm supposed to get a Christmas bonus and I'm eyeing the skyhawk frames, my bars, wheels brakes will all transfer easily. I just press the headset, grab a bb adapter, bottom bracket, crankset and seatpost. The rest of the stuff should fit.
I could probably use my current bb and crankset if I wanted to save money.
Cons of the frame, cost of buying a new frame, and I'd have to buy a different rack or use a backpack. Also smaller tank
Pros are I feel it's more reliable, and I get to use a high compression head if I want
Or keep my frame, buy another 4L tank, I cracked mine. New sturdy motor mounts.