Originally Posted by
Miles2go
and I'm now being passed on big hill coast downs, when on rides with buddies.
120rpm on a 53/11 is 45mph. You all coasting down hills at faster than 45mph?
Either way, at those speeds if you do reach spinout on your drivetrain and reach terminal velocity then your aero resistance is vastly vastly more important than a half or one single watt in the wheels. That, and your body weight for going downhill.