powercranks adjustable "adjustable length crank which easily changes from 85mm to 220mm"
www.powercranks.com
much less stress on your knees as you're reliant on a lot more muscles and the power is spread smoothly across the whole pedal stroke rather than just mashing or pedalling squares
http://www.pezcyclingnews.com/defaul...lstory&id=4331
Last edited by markhr; 11-01-06 at 08:41 PM.