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Carbon Cranks On The Shore?

Dec. 12, 2018, 2:59 p.m.
Posts: 168
Joined: Feb. 24, 2017

My only problem with the RF Turbine is the 30mm axle and BB92 don't leave much room for bearings. I get good millage out of GXP BB's with their larger bearings. Got 1500km on my stock Sram GXP BB. When I ran 30mm cranks in BB92 the BB would only last about 800km. 

In Amurica Sram offers the new GX 6k cranks with 165mm arms, 68/73 with GXP axle. So I am trying to track a pair down.

Dec. 13, 2018, 9:36 p.m.
Posts: 1
Joined: July 13, 2017

Posted by: RAHrider

OK, so lets flip it.

Who has cracked an alloy crank? (not me)

Who has cracked a turbine LP? (not me either - no lack of trying)

I have smacked the threads out of aluminum RF aeffects.

I have not been able to destroy a set of forged RF Turbines.

Dec. 13, 2018, 11:46 p.m.
Posts: 484
Joined: May 11, 2018

The carbon cranks I had were the original next. And yes, they were basically alloy with carbon inserts. I broke three of them, and when they broke they snapped in half.

Kudos to those who broke/bent alloy cranks. I guess the next question is, given what you did to those cranks, do any of you think they would have been fine if they had been carbon?

Dec. 14, 2018, 10:18 a.m.
Posts: 533
Joined: Jan. 31, 2005

I've bent a bunch of alloy cranks back in the day, around the time of concrete stair drops and the move from square taper to ISIS. I felt like the cranks did their job. Those same impacts would have destroyed the carbon cranks of the time. No idea how modern carbon cranks would fare. Either way I like my cranks to bend when they fail not vaporize.

Dec. 14, 2018, 12:38 p.m.
Posts: 86
Joined: Aug. 22, 2011

Posted by: craw

Alloy is only marginally heavier given how much tougher they are at half the price. Turbines are very tough and Atlas even tougher. Put those little boots on then smash away.

THIS ^

Dec. 16, 2018, 9:43 p.m.
Posts: 2452
Joined: Jan. 8, 2004

Over the last 18 months I've got 55 bike park days, and 250,000+ m of vertical on a set of Race Face Next R pedals. Tons of bike park, pedaling, shuttling predominately between Whistler and North Shore. I'd had some issues with the previous generation Next SL cranks, but the newer Next R carbon cranks have been flawless. I've also been impressed with the newer bottom brackets. Still on the original BB.

Biking: As addictive as cocaine, twice as expensive!

My Super Interesting Website

:safrica: - :canada:

Dec. 17, 2018, 8:29 a.m.
Posts: 1
Joined: Jan. 17, 2018

Rode XO DH for years, sold the bike with them intact. Replacement bike had SixC - I sold the third warranty set of SixCs and replaced them with Hope. Weight penalty was worth it, the SixCs just couldn't be trusted. Friend had the same experience.

Dec. 17, 2018, 4:02 p.m.
Posts: 2121
Joined: Nov. 6, 2005

Posted by: hongeorge

Rode XO DH for years, sold the bike with them intact. Replacement bike had SixC - I sold the third warranty set of SixCs and replaced them with Hope. Weight penalty was worth it, the SixCs just couldn't be trusted. Friend had the same experience.

Yep... my experience as well... went back to Atlas cranks... Hope are nice as well....

Dec. 17, 2018, 9:43 p.m.
Posts: 98
Joined: March 1, 2017

Carbon cranks make great door and drawer handles. We've literally loads of them at work....

Dec. 17, 2018, 11:38 p.m.
Posts: 1
Joined: July 12, 2018

I think the gx Eagle crankset seems like a pretty nice deal. Cheap (includes a chain ring), multiple arm lengths and weighs pretty much exactly the same as the race face turbines.

Dec. 18, 2018, 4:44 p.m.
Posts: 168
Joined: Feb. 24, 2017

I am having a hard time finding GXP 165 x 68/73. I know they are transitioning to "DUB" just seams crazy that they disappeared so fast.

Dec. 18, 2018, 4:55 p.m.
Posts: 1216
Joined: Sept. 30, 2006

Posted by: heathen

I am having a hard time finding GXP 165 x 68/73. I know they are transitioning to "DUB" just seams crazy that they disappeared so fast.

https://www.jensonusa.com/SRAM-Truvativ-Team-GXP-Bottom-Bracket

https://www.amazon.ca/SRAM-Bottom-Bracket-Team-English/dp/B003L9EIZK/ref=sr_1_1_sspa?ie=UTF8&qid=1545180993&sr=8-1-spons&keywords=SRAM%2Bgxp%2Bbottom%2Bbracket&th=1&psc=1


 Last edited by: shoreboy on Dec. 18, 2018, 4:57 p.m., edited 1 time in total.
Reason: Added link
Dec. 19, 2018, 5:27 a.m.
Posts: 168
Joined: Feb. 24, 2017

Thanks but, I am looking for cranks not the BB

Dec. 19, 2018, 6:49 a.m.
Posts: 226
Joined: Jan. 2, 2018

Are you sure SRAM made 165 cranks in 73/68? My bike had a gxp bottom bracket and I could not find 165mm gxp cranks anywhere. I think they only started doing shorter cranks for non-dh width BBs as of the new DUB stuff. 

I ended up going hope cranks and BB.

Dec. 19, 2018, 10:47 a.m.
Posts: 1216
Joined: Sept. 30, 2006

Posted by: heathen

Thanks but, I am looking for cranks not the BB

My bad.  How about these then?

https://www.jensonusa.com/SRAM-NX-GXP-Crankset

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