Only under special circumstances. Please call the SRM Service Center for specifics.
We don’t recommend it because all warranty will be voided and you will be responsible for all repair costs.
The zero offset is the frequency in Hertz that the PowerMeter is transmitting when no torque is applied. Once torque is applied, the zero offset will rise. It is important to set your zero offset at the beginning of a ride to ensure that your PowerMeter is tared.
Each PowerMeter has a unique “slope” value, which is calculated during the calibration of that specific PowerMeter. The unit used to describe slope is 'Hz/Nm.' For example, 20.0 Hz/Nm means that for each Newton Meter of torque applied to the PowerMeter, the output frequency will increase by 20 Hertz.
Depending on your PowerMeter….
Calibrations done at the SRM Service Centers are the most accurate. We calibrate in a controlled environment using a known force and a calibration jig. This known force is hung from the chainring thus eliminating the friction from the bottom bracket and ensuring the most accurate slope.
Yes, if you have the right equipment and calculations. This requires hanging a known force from the crank arm, pedal, or chainring. In order to ensure the most accurate calibration, you must eliminate the friction of the bottom bracket by hanging a known force from the chainrings.