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Different cadence road vs trainer - cause, or issues?

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Different cadence road vs trainer - cause, or issues?

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Old 05-15-13, 01:13 PM
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Different cadence road vs trainer - cause, or issues?

So on my trainer, I tend towards ~85rpm, especially as power gets above 80% or 90% of FTP. On the road, on the other hand, I prefer ~105rpm. Is that common? Do I need to change one or the other to get optimal results?

I'm aware this is likely a stupid question and watts = watts, but it seemed weird.
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Old 05-15-13, 01:29 PM
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It's not uncommon. On a trainer you have lower inertial load so the preferred cadences is often lower. You also see less inertial load on hills and most riders also prefer a lower cadence on hills.

I don't think there is much point in changing from your preferred cadence. On the road a higher cadence is useful when racing or riding in groups to more easily respond to accelerations but you won't experience that on an indoor trainer.
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Old 05-15-13, 01:39 PM
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Ah, that makes sense. Thanks for the explanation!
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Old 05-15-13, 02:25 PM
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Originally Posted by Bah Humbug
Ah, that makes sense. Thanks for the explanation!
It does? I don't think so. I see no relation between "inertial load" and cadence. Power is proportional to cadence times torque. Inertia doesn't enter the equation.
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