Roadie recall on Dura Ace and Ultegra

I saw something about this on Hambini. Seems to have been a galvanic corrosion issue when water got into the interface between the crank arms and the axle.

I doubt too many Australian cranks will be fubar, but will be happy to take a free newbie.

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Wonder how far down till it's time to buy :oops:
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"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. "

From the Hambini video this seems to be a design issue, not manufacturing. It is astounding how they could elect to only replace upon inspection rather than just replace no questions asked.

For example I had an Ultegra crankset on my old roadie which mostly sat on the rack and was ridden a couple of dozen times before I sold. It still looked mint and no doubt would present no corrosion issues on inspection. Whos to say with the new owner they don't put it through high mileage sweaty/beachside riding and it fails catastrophically despite an inspection earlier cleared it as being OK?
 
teK-- said:
"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. "

From the Hambini video this seems to be a design issue, not manufacturing. It is astounding how they could elect to only replace upon inspection rather than just replace no questions asked.
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Meanwhile at SramHQ
 
teK-- said:
"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. "

From the Hambini video this seems to be a design issue, not manufacturing. It is astounding how they could elect to only replace upon inspection rather than just replace no questions asked.

For example I had an Ultegra crankset on my old roadie which mostly sat on the rack and was ridden a couple of dozen times before I sold. It still looked mint and no doubt would present no corrosion issues on inspection. Whos to say with the new owner they don't put it through high mileage sweaty/beachside riding and it fails catastrophically despite an inspection earlier cleared it as being OK?
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Yeah its a bit of bullshit, an arse covering exercise. Other words we know its an issue and will replace if they look like they'll fail. If they fail and you were told to stop riding until inspected, your fault.

I know a couple of bike shops in Adelaide that will require you to book the bike in, a certain date and time and probably leave it there for the day.

Why would you bother.
 
teK-- said:
From the Hambini video this seems to be a design issue, not manufacturing......
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I'd say it's a bit of both, but more manufacturing given it's a glued joint that is failing. Yes it's a bit of shit design to conceive a crank where the inner & outer faces are glued rather than welded (like older Hollowtech models), but ultimately it's during the manufacturing stage where inadequate preparation of the bonding surfaces (residual oxidisation or contamination) has resulted in inadequate adhesion of the glue.

ozzybmx said:
Yeah its a bit of bullshit, an arse covering exercise. Other words we know its an issue and will replace if they look like they'll fail. If they fail and you were told to stop riding until inspected, your fault.
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If you look at the number of failures compared to the number of cranks being recalled, the proportion is well under 1%. So yes, it is a bit of arse-covering, but the probability of the cranks failing is actually very low
 
Tubbsy said:
Actually did happen to a good friend of mine while riding earlier this year. Luckily he didn’t stack too badly.
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Losing a crank under power would be worse than breaking a chain. It would fuck your position up really badly. When I used to ride singlespeed and broke a chain, it was bullshit but at least my feet were still 180° and cranks intact, both feet rapidly going down and the broken arm completely off the bike would be a shit situation. Anyone that this has happened to is lucky to get away with it.
 
ozzybmx said:
www.cyclingnews.com

Shimano to recall 760,000 Ultegra and Dura-Ace cranksets due to risk of failure

Worldwide 'inspection and replacement campaign' comes as six people injured in North America
www.cyclingnews.com www.cyclingnews.com
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from the article:

Despite their similar appearance, Shimano's 105 chainsets are not affected by the recall, due to their cold-forged manufacturing process rather than the bonded construction found on Ultegra and Dura-Ace. Likewise, no 10-speed or 12-speed components are affected.
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That's something, I guess. For me, I will still be wanting Rotor direct mount cranks for the next roadie or gravel bike.
 
Kind of scary to think about the maximum speeds I've hit on these cranks.

Not sure if I'll be bothered taking them anywhere for an inspection but I guess that I'll be keeping a closer eye on them. I wonder how long the wait time will be on replacements for affected cranks.

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Crunching the North American numbers of breakages vs total number of potentially affected cranks, the failure rate is about 0.6%, which is a tiny proportion of what's out there. Keep an eye on them, and tune into any weird feeling with them (they'll feel wonky well before they break), but the probability of having them fall apart is very low.
 
Bad thing is this problem was well known years and years ago. Specifically I bought 105 cranks for my ultegra build about 6 years ago for this reason. What I'm surprised at is that they did nothing to fix it!

Wonder if it affects mtb cranks too, or are they less weight weenie?
 
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