Originally Posted by Maelochs

Yeah ... except it wasn't stress that killed them.

That is an excellent example of how smart people get information and completely ignore it, picking and choosing tiny bits to cobble together something which fits their a priori narrative to support their own ridiculous and unrealistic theories.

Those cranks did not fail due to stress ... they failed because they were not properly glued together, so that moisture could create a corrosive chemical reaction between steel and aluminum parts. This corrosive chemical reaction hastened the breakdown of the adhesive bonding the aluminum parts together. The glue is what failed ..... This has been explained repeatedly, in posts way before the recall was announced. In fact, pictures like the one above were posted years ago on a website which collected stories o crank failure ... which site was referenced here in an earlier thread (search and find.)

At no point did the aluminum crank fail because the intact crank was aluminum, and could not stand up to the stresses of being aluminum and being a bike crank. (If aluminum was not suitable for bike cranks the 105 cranks would also have been recalled. (https://handsonbike.blogspot.com/201...imano-105.html)

The cranks failed because the glue bonding the two sections together failed, and the remaining two parts, seperatley, could not function as a bicycle crank.

The All-Aluminum, one-piece, 105 cranks have No record of failure and are Not included in the recall.

This is a classic example of a smart person being deliberately stupid to support and inaccurate and dishonest theory. This is the same sort of lack of thinking or dishonest, actually psychotic (using information invented to replace actual information form reality) that allows people to hate CF ("Every CF frame and fork is a deadly accident waiting to happen," they have been saying for several decades, while the rest of us wait .... )

This is the kind of thinking that allows people to claim the Earth is flat and that technology doesn't work while driving computerized cars along routes suggested by GPS satellites while engaged in video-telephone calls with people in other countries,.
This si the kind of ridiculously pitiful failed thinking which is actually killing the human race.

Bravo.

Originally Posted by Jughed

you made a similar rant at me when I pointed out this issue prior to the recall.

Bravo!

Originally Posted by Maelochs

As evidence I put forth the fact that even someone trying to prove the opposite could not list a single major mass recall of aluminum cranks withing the past two decades.

Originally Posted by bikingshearer

I stopped at 10sp and it's all Campy, so this does not affect me. But I note that, according to the article, the 105 units are not affected, as they are cold forged. Like my cranks.

Old tech FTW.

Originally Posted by JohnDThompson

FWIW, cold forging is not immune to failure, e.g.:
https://pardo.net/bike/pic/fail-001/FAIL-001.html

Originally Posted by CAT7RDR

Here is my 6800 code MA crankset.
I cannot see any signs of defects.
When the inspection procedure is available, I'll take another look.
I have a braze on FD. I will consider a different crankset altogether for lower gearing but I understand I would need a new GRX FD for the GRX crankset to work with a 2.5 mm offset and 46-30 chainrings.

Originally Posted by zaje

interesting, I am surprised about numbers: 760 thousand cranks sold in North America (US probably?) and Canada (what about the rest of the world, Europe, Asia, Antarctica?), 4000 out of those are reported as failed. I wouldnt call this a widespread problem.

Originally Posted by DorkDisk

I was a bit curious as to how this is to work at the shop end…...

This seems to be the official inspection instructions. Not very sophisticated IMO.

Originally Posted by smd4

First Gen Hollowtech FTW.

Originally Posted by dedhed

So square taper?

Originally Posted by icemilkcoffee

Uh oh. I am reading the fine print. Looks like they are borrowing a page from GM:

So this is not a blanket recall. They are only replacing cranksets that are visibly delaminated! If your crankset hasn't failed yet you get nothing. This is a real slimy move by Shimano.

Originally Posted by jpescatore

Got my 2017 Domane with recalled crankset back from my bike shop after inspection - by a relatively non-old mechanic whose eyesight seemed fine...

That crankset has about 14000 miles on it - came back much cleaner that it went in! No signs of the issue found.

Creaking and "steps" where the "seams" are on the exterior side on the drive side are what I was told to listen/look for as earliest signs in my inspection. Cracks and white spots might be less visible externally, I guess when every bringing into the shop for work I'll ask for a removal inspection.

Originally Posted by seypat

Legit question. now that it's been inspected, are you confident It won't fail in the future? Or, will it be in the back of your mind on every ride?