Guys and Gals, just look at all the "chatter" regarding building these little "whizzer things" since Brucemg51 posted his unfoutunate experience of having that motor come off his bike. He posted it to WARN us!!! looks like it "TOOK". Most of the recent post I've read have to do with "studs".. makin' it stronger, safer, better.... Thank you Bruce... looks like your work regarding warning us was well done.