Tour de France 2012

Wiggo's elliptical chainring!

has anyone ever ridden on one?

I used to ride an old red, yellow and orange MBK Mountain Bike back in the late 90's...

I used biopace ones on my tribike once, made no difference to my bike time. They are much more subtle than brads one.

I've ridden with the Rotor version (setup for someone else – which matters). It did feel different when sitting back, dipping your heels and spinnin up climbs.

The shape decreases the gear through the deadspot. Not like Biopace which does the opposite.

It just seemed a very good TT for someone I didn't associate with that discipline.

He is great at hilly TTs like this year's Dauphine. I even mentioned it here! tssst.