Originally Posted by Discombobulate:
“Why when they go downhill do some riders crouch down really low ? Apart from being really uncomfortable its a tricky position to get into and out of, it can't be for aerodynamics effects surely.”
It's entirely for aerodynamic effects !
they can be going 70-80K an hour on long descents, the aerodynamics make a big difference at that speed........and of course there are usually fairly big gaps between riders as they need a 'safety distance' when they're going that fast, so there's little or no slipstreaming to be had
They also adopt a low crouch on time trials when there's no one to slipstream behind