Originally Posted by badsac
Timing chain? Isn't that what cars have to drive their camshafts? You're nothing if not chivilrous pattie. I remember and old girlfriend I used to do some kayaking with. I used to always sit in the back under the premise I'd do all the work for her. Used to get buggered though and end up hardly paddling. Half the time she'd be paddling away, getting us there, and never notice I was being a lazy ****. Ah, that was the life.
How would we do that? Talk about roadbikes? Do you think we're capable?

The timing chain connect my crankset to hers. Look at this sick design that allows independent pedalling:
daVinci drivetrain - engineering at it's finest