cat0020

Shimano to recall 680,000 Ultegra and Dura-Ace cranksets due to crash risk

The specific models affected are the 11-speed compatible Ultegra FC-6800,
Dura-Ace FC-9000,
Ultegra FC-R8000 and
Dura-Ace FC-R9100 chainsets,
as well as the FC-R9100P power meter variant.

https://www.cyclingnews.com/news/shi...to-crash-risk/

datlas 

Wow that's a big deal.

Anyone know if my 10-speed Ultegra 6700 will work ok with my 11 speed R8000 drivetrain??

Bah Humbug

They finally admitted it.

datlas 

I did not read the fine print. Will they replace ALL these cranks or only ones that show signs of weakness/delamination??

Bald Paul

They want 760,000 people to immediately stop riding their bicycles, bring them to a LBS for inspection, and then will only replace ones they find to have signs of delamination.
Yeah, good luck with that.
Mine is on my dedicated Zwift trainer bike. I'll roll the dice. My road bike is Sram.

datlas 

Answer: only ones that are breaking.....cut/paste:

If you are in North America and believe you have an affected crank, you are advised to immediately stop using it and contact a Shimano dealer or an authorised inspection centre (essentially any store that is familiar with Shimano components and has passed Shimano's maintenance course). The dealer will then perform an inspection, and where signs of delamination or separation are found, a free replacement will be issued.

edit: statement from Shimano says they expect only 1% or less of cranks to need to be replaced.

seypat

Shifting the responsibility back to the consumer.

Troul 

thats one way to spur the "buy back" program up.

eduskator

Yeah, they had major issues even before this recall. They are shallow and not a 1-piece. Some of them are ungluing.

It's a nice thing for the owners that are close to needing to replace them!

Still a lot better than SRAM though

cat0020

Important message to customer about inspection program

https://bike.shimano.com/en-EU/infor...n-program.html

seypat

Lots of variables in that design/production process. Doesn't take much to come out with a flaw. I don't know that the problem will go away.

ljsense

Once a manufacturer offers a recall like this, does it go on indefinitely, or is there a set window to seek replacement?

Both my road bikes have 9000 cranks, which I really like. I imagine they will pass inspection. They look good to me. But it doesn't exactly inspire a ton of confidence during the next field sprint.

If I start seeing the crank separate three years from now, will they replace them then?

I'm also wondering how Frankenstein-y the replacement 11-speed 9100 chain rings are going to look on the 12-speed 9200 crank arms. Anyone have both 9100 and 9200 cranks? Poring over the photos online, it looks like there might be some difference in finish and flow of the lines.

Trakhak

Shimano is still honoring warranty replacements of some triple crankset (I think) that was produced in the late '80s, so I would imagine that this recall is open-ended, too.

ljsense

Has anyone on here had one of these cranks fail?

I'm wondering if there is much warning.

Maybe they start to separate before they actually snap altogether?

TMonk

I've had this happen on an affected Ultegra crank a while back. bummer that I just tossed it. I have one now too but its on my permanent trainer bike so im not sure if im gonna bother w the recall

TMonk

mine did start to visibly separate as well. it wasn't catastrophic for me, but I imagine it could be if you like didn't notice

SwtBadger

Yes, I've had one fail. It didn't snap off, but rather slowly bent such that at first it was uncomfortable to ride and then impossible. At first thought it was an issue with my cleats. But after a quick check became obvious that it was crank.

I think I kept the parts, so looks like I will get a replacement as they didn't warranty the initial failure.

Sy Reene

go Campy!

tempocyclist

If you mean 6700 crankset, then yes. It'll work perfectly. I've run that setup (10-speed crank with 11-speed rest of groupset) in the past when I couldn't source the 11-speed crank.

SoSmellyAir

It is! I wonder what gives Shimano the confidence that the ones manufactured since 2019 and the new 12-speed Ultegra and Dura-Ace cranks are not similarly affected? Are they not also HollowCrank bonded crank arms?

It should; I use Shimano 10-speed rings (105 FC-5750 big ring and Ultegra FC-6700 small ring) with my otherwise 11-speed Shimano drivetrain.

genejockey 

Change in the manufacturing process? Addressing quietly a problem they had observed?

spelger

I've read somewhere on this forum that that is the case.

seypat

Sounds somewhat similar to the Ford Explorer/Firestone fiasco BITD. Shimano doesn't want to take any blame. "Nothing to see here. Move along."

alcjphil

Not to mention the Pinto

Troul 

& crown vic fires, trans parking paw failures