Originally Posted by
dolfinack
They won't descend faster due to being heavier. Gravity is gravity. I expect this to be refuted hotly. Hum. (They will achieve a higher terminal velocity but I doubt they reach that kind of speed!!)
Terminal velocity is when the force of the wind and road friction slowing you down equals the force of gravity speeding you up (ie you are no longer accelerating) - and it happens on virtually all descents to all riders. Heavier riders have a higher terminal velocity - they DO descend faster. The lead bottle (actually I think it was shot pellets in the bottle) idea works, but it's not a huge factor.