watch Contador time-trial, he is forever shifting back in his saddle...but Cancellara didn't shift at all.
I gather Cancellara has exceptional hip flexibility, so he can keep low at the front without moving forward to open his hip angle, although he was on the nose of the saddle here. The rest of us struggle and end up on the rivet, Contador perhaps more than most. Not sure that his arm angle is really helping if you compare Bertie with Spartacus; if Contador got his arse properly on the saddle, he'd be close to the Superman position. Although if you want to see "on the rivet" for somebody who wasn't even supposed to be trying, look at Cavendish
I gather Cancellara has exceptional hip flexibility, so he can keep low at the front without moving forward to open his hip angle, although he was on the nose of the saddle here. The rest of us struggle and end up on the rivet, Contador perhaps more than most. Not sure that his arm angle is really helping if you compare Bertie with Spartacus; if Contador got his arse properly on the saddle, he'd be close to the Superman position. Although if you want to see "on the rivet" for somebody who wasn't even supposed to be trying, look at Cavendish