SVCC Power Part 3

[turbosupplier]

I have owned both a srm and polar along with using a power tap. For the most part the polar is a good power meter I only had a slight issue with cross chaining power measurements being about 20 watts different at the same speed on a personal trainer. The actual numbers are pretty close and can be tweaked to right on by adjusting the chain weight and getting it a lot closer. The unit is pretty accurate just has 2-3 seconds lag great for long efforts though.

[1stPlaceDirector]

I don't see how it could accurately measure the tension in the chain because the steel chain doesn't stretch enough to be detected, I think. I don't see any pro cyclists saying this works.

[mytube001]

It doesn't measure chain stretch - it sets up a magnetic field that senses chain vibrations, and it filters out the harmonic frequency of the upper chain run to find the "tune" of the chain and then measures the amplitude of that particular harmonic, which translates into chain tension. It's very much like an electric guitar, where the pickup senses the vibrating string. Like the string, a chain has a fixed frequency determined by tension.

[jessejblom]

it's crap

[JamesKim13]

lmao. that settles it. i just saw this unit today and it's pretty interesting to say at the very least. That being said, I probably wouldn't go for it.