Power v Calibration
Posted: Thu Mar 26, 2020 10:35 am
If the calibration is down (the calibration test numbers is less than the number written on the trainer) will it affect the difficulty and/or power reading?
I ask because written on my trainer is 6458, but my calibration was 6452, ie 6 down. After tightening the adjuster bolt the calibration is now correct 6458, however the trainer feels much more difficult to drive the same wattage. For example at the same heart rate I'm pushing 50-70 less watts than I was before I tightened the adjuster to fix the calibration.
I'm not questioning the new power readings with the correct calibration, I'm asking if with the calibration incorrect (-6), would this lead to easier efforts for the same power, or higher power readings.... important because all of our FTP, training plans, training history, etc is based of our power outputs.
Could someone tell me how the calibration/belt tightness affects power readings/difficulty? I've posted on Facebook, nobody thinks calibration affects power, but I can feel a big big difference, it almost feels like there is more resistance, like I have the brakes slightly on. Note that I changed the belt about 5 months ago.
I ask because written on my trainer is 6458, but my calibration was 6452, ie 6 down. After tightening the adjuster bolt the calibration is now correct 6458, however the trainer feels much more difficult to drive the same wattage. For example at the same heart rate I'm pushing 50-70 less watts than I was before I tightened the adjuster to fix the calibration.
I'm not questioning the new power readings with the correct calibration, I'm asking if with the calibration incorrect (-6), would this lead to easier efforts for the same power, or higher power readings.... important because all of our FTP, training plans, training history, etc is based of our power outputs.
Could someone tell me how the calibration/belt tightness affects power readings/difficulty? I've posted on Facebook, nobody thinks calibration affects power, but I can feel a big big difference, it almost feels like there is more resistance, like I have the brakes slightly on. Note that I changed the belt about 5 months ago.