Re: what did you do to your motor bike today?
I got bored of the 700c hybrid, so I took the Tanaka Dax-drive off it. I'm going to put it on a single-speed rigid mountain bike with huge slicks. Fun fun fun. I think going 5mph slower but having fat tires and a "gear" the engine can really get on top of (1" roller re-installed) will be more fun than trying to coax the skinny bike into top speed.
1" roller Dax Friction Drive and Tanaka 3300 with mods.