Bicycles Asked by user254820 on October 13, 2020
I have a set of rollers and a single-speed road bike. My 80-90 rpm speed is 27-30 kph (17-19 mph). I feel like I would be more stable with higher rpm, but it’s harder to sustain.
If I understand this, the source of the bike’s stability is the gyroscopic effect of a spinning wheel. So there are few more variables to that, like a wheel’s mass, or even distribution of the mass within a wheel body. For the reference, my wheels are 27" and 1.5 kg (3.3 lbs) each, and I’m 70 kg (154 lbs) myself.
Can you share an experience with the speed-stability relation of a road bike on a set of rollers?
the source of the bike's stability is the gyroscopic effect of a spinning wheel.
This is incorrect. Gyroscopic forces play virtually no part in bicycle stability. What keeps a bike stable is the counter steering induced by the frame geometry, particularly the sloped headtube and resulting trail in the fork.
In any case, your single speed will be fine on the rollers. It doesn't take much speed to stay stable on them, any gear ratio appropriate for a bike on the road will work on rollers.
I'm surprised you haven't just tried it to see how it would go, and not conclude your setup is fine already.
Answered by whatsisname on October 13, 2020
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