Quote:
Originally Posted by Kodename47
No, you don't. There will be an increase but the % increase will be a fraction of the total losses.
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I used to think that but actually % loss is better approximation than a static loss.
Estimating drivetrain losses as a % is a basic principle, Helical gear, bearings, joints ect exibit a fairly linear increase in losses with power assuming there is no flex or movement that causes more friction. Doubling the power output can also change lubrication films, introduce strain and flex in places that didnt before.
There are built in losses that dont change with power such as pumping around oil, but its fairly insignifiant compared to the main losses in the drivetrain.