#496
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I realize and agree that they don't look "perfect" and some look better than others but maybe, just maybe it's a requirement of the clamshell design and interface to have a measured gap. If it did look perfect would they be prone to creaking?
I've always wondered. Quote:
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#497
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I have a 12 speed shimano crankset and I think it looks great.
I get what you are saying, but I also think the ultegra crankset is a very nice component and I am not going to ever think about it once installed or when looking at bike from 5 ft away. They bolstered the crank and added some weight to it to ensure it wouldnt fail, thats the important part. OH, also, the photo has 11 speed rings >> 12 speed crank. hence the slight mismatch. Shimano is trying to ensure the crankset will shift correctly with an 11 speed group. Spacing is different on 12 speed rings. Update:, going to try to return the Ebay SRM. Seller should really have done their homework and not sold a recalled crank on ebay. was not clear from photos. there are other odd problems with the preload adjuster as well. and the actual SRM unit rubs on the BB (which I now see, was obviously happening to them as well). Weird! Last edited by skouri1; 11-11-2023 at 08:23 AM. |
#498
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Indeed! I can't believe Shimano can't quickly design shape matching 11-speed rings and get them manufactured by now. It took Shimano so many years to finally do this - they had plenty of time I'm sure between when they finally decided to do something about this issue and the time they finally went public.
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#499
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Does anyone know what the actual spacing difference is? Is using a native 12-speed R8100 crank really that bad of an experience on an otherwise fully 11-speed bike?
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#500
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Are they the same 11 speed rings as R8000 and R9100 with special adapters?
Or are they special made rings? What about future replacement? |
#501
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Given the magnitude of the recall, I would hope they would institute running updates to them. Last edited by batman1425; 11-11-2023 at 09:11 AM. |
#502
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shimano has been doing 'head scratchers' for decades..Like DA pulleys and headset stack heights and lack of compatibility even w/i the same groups, like XT....BIG company that is really interested in the bottom line..
__________________
Chisholm's Custom Wheels Qui Si Parla Campagnolo |
#503
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I have not had a bit of trouble, luckily, with any of my Shimano cranksets, Dura Ace or Ultegra, after many thousands of miles.
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#504
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Teslas sales number are a direct contradiction to this opinion.
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#505
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Also, my comment applies to new 9100 DA cranksets as well as the replacements. They are all wonky. |
#506
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Without a doubt imperfect.
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#507
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Well this is a case of TLDR, 34 pages. I got around to looking at my 9100 crank and it has the "OK" letters on the arm so, apologies in advance, but can I get an easy synopsis of the procedure if I want to do something about it? Does the serial number mean anything?
Shimano web site says take it to a retailer. I found that part. BTW I have put a lot of miles on it with no issues. Found a retailer, it's a Trek shop nearby with the words "Shimano inspection location" next to it. I have answered my own question I think. |
#508
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Yep, "OK" falls in the recall so you would need to take it to a shop for an inspection. Good luck!
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#509
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Posting my own update on this. Now that the cold has set in I took my and my wife's road bikes into the LBS a week ago for inspection. Both have Ultegra 8000 cranksets old enough to be in this lot.
Her cranks checked out okay in the shop (limited mileage). The crankset on my Cervelo R3 that have ~12,000 miles of all weather riding on them were showing signs of preliminary delamination on the driveside. They noted the non drive arm (with a Stages power meter installed) looked to be okay. So I expect I will be getting at least half a new crank for my Cervelo. No word yet on timetable. |
#510
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Ive been riding a 12spd DA with a 11spd group for 6 months and no issues. The 12spd crank will work on 11spd cassette provided you switch to a 12spd chain. In fact this is improves shifting slightly though it was never that much of an issue. What some are complaining about is that the factory replacement crank is the 12spd crank arms with 11spd chain rings and have an aesthetic concern. Functionally there isn't any issue. It would have been nice for Shimano to send the crank with the 12spd chain rings but then everyone would complain that they now have to go and buy a 12spd chain. This is the least obtrusive solution imo because it solves the problem and you aren't out another $60 before you can use the replacement. And if the aesthetics bother you sell the 11spd rings and buy 12's and a chain. Last edited by cuda; 11-24-2023 at 02:01 PM. |
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