Originally Posted by
BroadwayJoe
1200 watts on a crankwheel? This is the stuff that will get us legislated out of existence IMO. Your frame is probably not up to the forces involved. You're dealing with a level of power that your frame was never intended to endure on that mounting location. My suggestion is to find and/or build a suitable frame - obviously the one you're using isn't. be very careful...
I'm more worried about the over-powered hub motors people are using, especially on front wheels since no forks were designed to hand that kind of torque. In several threads, I've posted a link to a picture of failed drop outs on an aluminum fork--torque arms didn't prevent that failure. Steel forks are vulnerable to failure due to torque, too.