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Old 09-17-12, 07:09
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Default Power2max power meters..

Anyone had one? They are the best priced crank based power meter with the most rational method of calibration and you don't have to send em back to Germany for the battery to be replace.

Anyone?
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Old 09-18-12, 04:17
PACONi PACONi is offline
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Anyone had one? They are the best priced crank based power meter with the most rational method of calibration and you don't have to send em back to Germany for the battery to be replace.

Anyone?
I think you should do your homework on this PM. I was looking at one as well. What I've read is that they have issues with temperature fluctuations, especially at the beginning of a ride. Also the 'on the fly' zeroing seems a bit hit and miss to me.

Have a look at the review in the features section StageONE meter that will be coming out early next year. I'm going to keep an eye on it, check some reviews/tests against existing meters and then maybe get it.

Or win the lotto and go SRM.
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Old 10-01-12, 04:23
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Thanks for that.

I can afford an SRM but the thought of sending cranks back to Germany from Aus just to change the battery is absurd IMHO.

My powertap has been great and just looking for something for the gf.

I think the temp issues are more if you train in really cold climates. Thats not me at all lol!


If the stage one is a good product it will TKO the power meter market for sure.
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Old 10-01-12, 06:06
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I can afford an SRM but the thought of sending cranks back to Germany from Aus just to change the battery is absurd IMHO.
It's possible to do it yourself if you know what you are doing, although I would recommend using SRM's service centre in Christchurch. It's a once every 2-3 season job.
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Old 10-16-12, 15:11
STODRR STODRR is offline
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Thanks for that.

I can afford an SRM but the thought of sending cranks back to Germany from Aus just to change the battery is absurd IMHO.

My powertap has been great and just looking for something for the gf.

I think the temp issues are more if you train in really cold climates. Thats not me at all lol!


If the stage one is a good product it will TKO the power meter market for sure.
If you buy a new P2M it should have the new software on it that is supposed to have fixed the temp fluxuations problem some people were having. If you buy a used one you will have to send it in to get the softwar update.

Last edited by STODRR; 10-16-12 at 15:19.
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Old 11-03-12, 02:34
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It's possible to do it yourself if you know what you are doing, although I would recommend using SRM's service centre in Christchurch. It's a once every 2-3 season job.
Really?

What about calibration ease?

Ive had a power tap and still rate it. Easy to self calibrate. Its going on my GF's Trek and I need a new power meter. The Stages Cycling looks like the ticket so far.
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Old 11-03-12, 04:34
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Really?

What about calibration ease?

Ive had a power tap and still rate it. Easy to self calibrate. Its going on my GF's Trek and I need a new power meter. The Stages Cycling looks like the ticket so far.
You can't calibrate a Powertap. You can only check its calibration.

As for calibration ease, SRM still has the edge on all the others in that department.
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Old 11-04-12, 07:14
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Can't calibrate a PT?

http://www.cyclepowermeters.com/powe...check-76-c.asp
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Old 11-04-12, 07:52
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Correct, you can only check the calibration, you can't set/correct/adjust it.

If your Powertap's calibration is out, tough, you're stuck with it.

Setting the correct calibration on an SRM is a trivial operation and for a Quarq it's slightly more complex due to the need for some extra hardware to communicate with the Quarq.

Also keep in mind that the precision of Powertap calibration checks are somewhat less than those for an SRM, which provides torque data at 5-10 times the sensitivity of the Powertap (how much more sensitive depends on the gear used for PT check).
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Old 11-04-12, 08:02
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If the stage one is a good product it will TKO the power meter market for sure.
I'm not so sure. I think it'll have potential to be another gateway drug, but not a killer app.

It only measures the left leg and doubles that to report total power output, which relies on the invalid assumption that power production is left-right symmetrical, when in fact L-R asymmetry is normal, and not only is asymmetry normal, the level of asymmetry is not consistent person to person, nor is it consistent for the same person (it varies depending on absolute and relative power output, cadence, fatigue level, type of riding, bike and so on).
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