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S-works vs Lightning crank for powermeter use.

Posted: Wed Aug 08, 2012 5:22 pm
by Kasparz
I decided to get a Power2Max powermeter, but I want to choose between S-works or Lightning crank. Both are compatible, but I have no experience with them in use and Specialized doesn't list actual weight of crankarms.
I would like to know if Lightning are worth extra price and what is the weight penalty of S-works.

Re: S-works vs Lightning crank for powermeter use.

Posted: Wed Aug 08, 2012 6:34 pm
by djconnel
More to the point, has anyone seen data indicating the Power2Max is accurate?

I was worried by Jeff Jones' test.

Re: S-works vs Lightning crank for powermeter use.

Posted: Wed Aug 08, 2012 6:34 pm
by Weenie

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Re: S-works vs Lightning crank for powermeter use.

Posted: Wed Aug 08, 2012 7:34 pm
by cyclenutnz
Attached is the accuracy profile of my one. At least it is consistent side to side as the one it replaced (they were very quick with a warranty) had a 2% difference when in the big dog (and was over reading by more).

I observed variation in accuracy (as I tested many times) on different occasions although part of that will be the granularity of the calibration figures.

Re: S-works vs Lightning crank for powermeter use.

Posted: Thu Aug 09, 2012 5:17 am
by thisisatest
im assuming you have a bb30 frame...

Re: S-works vs Lightning crank for powermeter use.

Posted: Thu Aug 09, 2012 11:07 am
by Kasparz
It will be used for Specialized Transition with OS BB that I guess is a bb30 compatible, but I also would like to use it on my Scott CR1 Team Issue with bb adapter.

Re: S-works vs Lightning crank for powermeter use.

Posted: Thu Aug 09, 2012 11:07 am
by Weenie

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Re: S-works vs Lightning crank for powermeter use.

Posted: Fri Aug 10, 2012 1:48 am
by thisisatest
well that pretty much answers the question for you. if you want to use it on a non-bb30 frame (your cr1), it has to be the lightning.