They should be accurate, if they are not they shouldn't be called power meters. You should do threshold tests on the power meter you train on.įirst, this illustrates exactly why accuracy is so important. These are probably about 7-9 watts, so your PT and SRM measurements are consistent. You should do threshold tests on the power meter you train on.PowerTap measures power after the frictional losses of the drivetrain, so chain and jockey wheels. I find that the SRM reports about 5-7 watts higher than the powertap and the kickr reports about 15 watts high relative to my SRM (depending on power level). I tested my Kickr vs my SRM, and tested the same SRM vs my power tap. Granted, it is tougher to test a Kickr vs a powertap. The test you did was a complete waste of time and you really don't know if you made any progress at all because you haven't tested these units against each other. The kickr is probably reporting high relative to the powertap. These units can easily be anywhere from 5 - 30 watts different, and from what I have seen with the Kickr, it tends to over-report power output. you know how you stack up vs the "yard stick". One of the main reasons for doing this test is to see what you can put out on a unit you can train on.i.e.
Mikemartin77 wrote:Doing a threshold test using someone else's power meter / trainer is a complete waste of time. I have no idea when it was last calibrated since I bought it on eBay.ĭoes this seem reasonable? Are there any other explanations I'm missing? So now I'm wondering if either the Kickr was wrong, or my hub is wrong. My HR was in zone 4 to maintain my new zone 2 power range. However, today I did my first ride in my new zone 2 on my trainer at home (Kurt Kinetic) and it felt way too hard. As such, I didn't have the benefit of recording my power output via my own PowerTap hub.Īs I expected, I made significant gains in my power output. The person that did my second lactate test yesterday used a Wahoo Kickr to control the power for the test. I bought a PowerTap wheel off of eBay about 3 months ago and have been using that with my old power zones from the first test.
#Computrainer vs wahoo kickr update
The person that did the test used a computrainer (not sure if that's relevant or not) for power as I didn't have a power meter.Īfter 6 months of training my coach and I decided it was time to update the lactate tests since I've lost a lot of weight and improved my performance. Quick background: I started training with a coach about 6 months ago starting from scratch.
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