Question on TT aero helmet
I don't do TT, own a TT bike or helmet so the question is strictly because of curiosity. Watching a TT event, all riders will periodically put their heads down, thereby having the end of their aero helmet sticking straight up thus reducing the aero effectiveness. So why don't they make aero helmet with hinges on the tail so that when the rider put the head down, the pointy end will rest on his/her neck/spine instead of sticking up the in air? Of course, this might just be another completely stupid question.