Hi all, A wonderful place you have got going on here! I originally built my project (attached) 2 years ago when I was unable to afford an insurance spike and needed transportation to take me within towns. After a recommendation from a friend, I purchased my very own 80/66cc motor for my bike! Coming from a guy who thinks he has no actual mechanical acumen whatsoever, I thought I didn't do that bad of a job! I built this with NO forum knowledge whatsoever! I only discovered this place when I blew out my sprocket cassette. GET THIS - I built this thing without following any pre-tuning recommendations whatsoever. I used stock hardware, tightened nothing, adjusted the chain myself and off I went! Thing has never let me down and has always been powerful. I've been lurking here for a good 2 months here and I have a new bike waiting for me to transfer this thing onto. This time I'm going to do it right. I ordered a good mounting bracket for my 2" downtube on the new bike and replacement hardware all from SBP. Going for the shift kit when I get enough dough together. I've narrowed down my questions! Awesome community guys! I LOVE this thing and want to go to the next level for sure!