IB13: Power2Max Crank Power Meters Get Smaller, Cheaper & Have More Options

new power2max crank based power meter is lighter and cheaper

Power2Max’s new power meter spider is 60g to 80g lighter, cheaper, smaller and works with more brands of crank arms. For those looking to add power, that’s a win x 4.

The new version will fit Cannondale’s HollowGram, Specialized’s S-Works (old and new, as long as they have the detachable spider) and SRAM S-series and Force carbon cranks.

The battery case is a bit smaller, and the outer section of the spider is more machined out. That makes them up to 80 grams lighter depending on BCD.

new power2max crank based power meter is lighter and cheaper

It’s also been trimmed down on the inside, making it one of the few if not only crank based models that’ll fit the wider BB386EVO frames.

power2max crank based power meter is lighter and cheaper

It’s $1,050 and, in addition to the models listed above, will work with Rotor cranks.
They also have a spider that’ll hold Shimano’s new 4-bolt chainrings (DA, Ult), but use a Rotor crank arm. More road options will come, plus mountain bike and track options.

The SRAM model shows the gray color scheme. They also have red and a few others, including an American flag and other nationality motifs.

power2max crank based power meter is lighter and cheaper

Or, you can still get the original version, starting at just $899 with FSA Gossamer crank arms. Add Praxis chainrings to the bundle and you’ve got a complete power meter crankset for $1,000.

They use a normal CR2450 battery that’s user changeable. It’s good for 200 to 400 hours depending on climate. They claim a +/- 1-2% accuracy and auto zeros itself when you stop pedaling.

They sell a converter that switches it from ANT+ to Bluetooth, too.

Comments

Psi Squared - 09/21/13 - 6:54pm

Did Power2Max give up the prices on the new power meter with Rotor cranks (3D or 3D+)?

alvis - 09/22/13 - 11:02am

So, actually no never mind.

Richard Cabeça - 09/22/13 - 3:32pm

“Specialized’s S-Works (old and new, as long as they have the detachable spider)…”

Well, there goes the new S-Works MTB cranks, which now have an integrated spider.

durianrider - 09/23/13 - 7:16am

I almost got one of these. Got a Stages Cycling Power meter instead. Lighter, cheaper, stiffer and when you have an issue, you just send back a crank arm instead of the whole lot.

Power2max was a great product: in 2012….

Nick - 09/25/13 - 8:10am

“Lighter, cheaper, stiffer and when you have an issue, you just send back a crank arm instead of the whole lot.

Power2max was a great product: in 2012….”

And SRM and Quarq? Stages is the lightest and the cheapest power meter out there, doesn’t make it the best!

James - 09/26/13 - 5:31am

Power meter is all about accuracy. Often times cyclists train for weeks to gain 1% consistent increase in power. Strain gauge crank meters such as Vectors and Stages are simply not as accurate as torque tube meters such as SRM, Quarq and PT.
I have fiddled with power meters on and off for about three years now and even with consistent and accurate meter, it is still extremely difficult to read these data accurately with many deviations or ‘noise’.
So for me, it is just another fun toy to keep my interest in cycling to the next level.
For most people, power meter can only produce correct feedback only combined with the strictest regime of training and even still takes quite a lot of experiment, experience and knowledge to use it correctly.

Mark - 10/01/13 - 3:26am

SRM and Quarq don’t use a torque tube, they have simply strain gauges on the spider arms of the crank. Power2Max works in the same manner, only compared to SRM they don’t have a full wheat stone bridge for some reason. This gave problems with temperature variations in the first version. This was solved last year with an additional temperature sensor to correct the readings. To me as an engineer that seems like an ugly solution, but they will have their reasons not to use a full wheat stone bridge.

@durianrider. The stages is less accurate than a Power2Max since it assumes power output of both legs is always equal. Stages is indeed lighter, but do you really think you can notice such a small weight difference. With ‘basic’ carbon tubulars almost every bike will still be around 6.8-7 kg’s.

Post a comment:

Comment sections can be a beautiful source of knowledge, conversation and comedy. They can also get pretty ugly, which is why we've updated our Comments Policy. If your comment isn't showing up or suddenly disappears, you might want to check it out.