how the hell do you measure power at the crank? doesn't it have to be at the hub to have any meaning?
With a strain gauge.
Power is the force x velocity produced by the rider. One of the first places in the drivetrain to experience this is the crank. So it makes sense to measure it there.
With a strain gauge.
Power is the force x velocity produced by the rider. One of the first places in the drivetrain to experience this is the crank. So it makes sense to measure it there.