Polar power sensor

[Ivor]

Anyone know how accurate the Polar power meters are? I have one fitted, originally simply because I was having a devil of a time with the wireless sensors... and er, I saw it on eBay, like so much of the stuff I seem to have accumulated.
It was quite interesting/amusing seeing the change in my left right power balance over time after I'd injured a leg, not quite so exciting now its always at 50%/50%. Quite interesting to see other stats like the percentage of the stroke producing power and so on.
But I was thinking of paying a bit more attention to the actual power output figures and wondered how to check what it's saying?

[Ian A4size]

Orv- nice to meet you on saturday in the cafe,

BTW Andrew Green is our resident power meter guru , I am sure he will offer you some advice (posts passim....)

[Toks]

[quote="orv"]Anyone know how accurate the Polar power meters are? I have one fitted, originally simply because I was having a devil of a time with the wireless sensors... and er, I saw it on eBay, like so much of the stuff I seem to have accumulated.
It was quite interesting/amusing seeing the change in my left right power balance over time after I'd injured a leg, not quite so exciting now its always at 50%/50%. Quite interesting to see other stats like the percentage of the stroke producing power and so on.
But I was thinking of paying a bit more attention to the actual power output figures and wondered how to check what it's saying?

[mrP(Boonen)VT]

This is omething to do with sunlight, like those panels on the roof are they not?

[Ivor]

ok totally non-scientific test.... got my elite hydromag trainer yesterday and gave it a quick blast.
laid up with a stinking cold so didn't feel like a real session but couldn't leave a new toy in its box!
anyway had 10 minutes speeding up/slowing down/playing with the controls....
and the power readings seemed pretty similar between the polar display and the elite display, albeit with a bit of lag on the polar reading....
anyway, stopped after 10 minutes and checked the average....

Elite: 177 watts
Polar: 177 watts

Anyway, that gives me a bit more confidence that the numbers are in the right ballpark (and that all the time I spent setting up the Polar, weighing and measuring the chain and frame probably helped).

I'll spend a bit more time and do some proper timed runs and see what sort of numbers come out.

Cheers,
Ivor