bike cycle Science speed wind

How fast could you cycle in a vacuum?

When you ride a bike normally, the wind resistance increases with the cube of your speed. At 32km/h, the power
needed to overcome the drag accounts for more than 75 per cent of the total cycling effort, and this rises to over
80 per cent at 40km/h. Recumbent bikes, which have much lower profiles to reduce their wind resistance, can
already reach speeds of over 80km/h.

If you removed air drag completely, the only friction would be from the tyres and the bearings. Provided you had
a high enough gear ratio to allow your legs to pedal at an efficient pace, you could probably reach well over

An easy way to simulate this would be to try pedalling on a stationary bike, but there are no published records for this sport.