S-Works Power Cranks dual sided.

[kjetilEng]

Hello.

I just bought an S-Works Power Cranks dual sided 172,5 mm 110 bcd on Ebay and need chainrings.
Spezialized says "Chainrings are sold separately. Use only with Specialized/Praxis chainrings 06217-1702 (52/36T) and 06218-1713 (50/34T)".

I want to try some Extralite Octaramp RC2 chainrings, and can`t understand why they wouldn`t fit? Is it just their way of trying to fool me in to bying their own stuff, or is the spider any different from other 5 bolts?

[jfranci3]

A quick look of the part number shows the rings are cut out a bit for the drive side battery door and electronics.

http://src.media.cyclingnews.com/2018/0 ... czusja.jpg

[colagreek]

They fit, just be prepared for your shifting to suffer.

[gurk700]

~2000 miles and counting! Shifts perfect for me
EDIT: As far as stiffness goes, sure? maybe? I don't feel a difference. I'm not the strongest dude out there. I top out at ~1120 watt for 5 seconds for sprints. Had 0 issues.

[tonytourist]

The pod on the drive side can interfere with some chain rings. I am running the Carbon Ti CarboRings and had to get out the Dremel and make mine fit.

[moyboy]

Yup! I would stick with the Praxis chainrings, best balance of stiffness and weight.

They fit, just be prepared for your shifting to suffer.

[kjetilEng]

Thanks for the info!
I think I made a mistake, forgot to think about bottom bracket standards. The S-works cranks are for OSBB/pf30/bb30, but my BMC teammachine 01 disc had PF86!!Is it possible to convert this in any way?The reason I wanted the S-works crank over the Dura Ace, was the 50grams weight savings, but if I have to use some heavy bottom bracket adapter to make it fit, I should just sell it and bye a Dura Ace power meter!?

[eric01]

Nope sorry. Can’t make bb30 fit in pf86. The spindle is too short.

[Muhviehstar]

The pod on the drive side can interfere with some chain rings. I am running the Carbon Ti CarboRings and had to get out the Dremel and make mine fit.

With the support of @tonytourist I did the same today to the X-AXS version of the Carbon Ti CarboRings

[Petesprocket]

Just discovered the same problem with the carbon ti axs chainrings and the specialized power cranks..

[sepedasultan]

~2000 miles and counting! Shifts perfect for me
EDIT: As far as stiffness goes, sure? maybe? I don't feel a difference. I'm not the strongest dude out there. I top out at ~1120 watt for 5 seconds for sprints. Had 0 issues.

you have no issue with interference to power pod at all? I read in other thread that it does. thanks in advance.

[sepedasultan]

The pod on the drive side can interfere with some chain rings. I am running the Carbon Ti CarboRings and had to get out the Dremel and make mine fit.

With the support of @tonytourist I did the same today to the X-AXS version of the Carbon Ti CarboRings

Hi both,
thanks for sharing. can you explain more what is the weight gain of using this X-AXS? and how exactly can we cut that part to accomodate the power pod?

[gurk700]

~2000 miles and counting! Shifts perfect for me
EDIT: As far as stiffness goes, sure? maybe? I don't feel a difference. I'm not the strongest dude out there. I top out at ~1120 watt for 5 seconds for sprints. Had 0 issues.

you have no issue with interference to power pod at all? I read in other thread that it does. thanks in advance.

No issues with 52/36 rings.

[aeroisnteverything]

The pod on the drive side can interfere with some chain rings. I am running the Carbon Ti CarboRings and had to get out the Dremel and make mine fit.

With the support of @tonytourist I did the same today to the X-AXS version of the Carbon Ti CarboRings

Contemplating the same. How difficult was the job?

[tonytourist]

It's pretty simple, I just used a Dremel with a sanding bit on it. I also had to do the same to a regular SRAM chainring for my friend, as it was too thick to mount.
@aeroisnteverything I will upload some pictures later if you're interested.