RDY wrote: ↑Wed Jul 20, 2022 12:53 pm
Classic circling-of-wagons dealer responses, followed by attempts to discredit those having problems. Either you've been exceptionally lucky, your customers don't ride their bikes, or you're being untruthful. Or a combination thereof.
The problems are extensively documented on this forum and elsewhere. Quite a few by known and well respected mechanics. Plus all the chain drops and shifting problems that have been very visible with WT teams this season. I'll freely admit I'm a shit mechanic ... but the guy who built and services the bike isn't - he's worked as a mechanic for a couple of UCI WT and Conti teams, and in my experience is excellent.
Oh, and I suppose it's about par for the course for Shimano these days, but a rep helpfully suggested that we couldn't expect an XTR 12s chain to work properly with chainrings designed for 11s ... they should probably inform all the individuals (including me) and teams who've been enjoying the benefits of the (excellent) XTR 12s chain on 11s.
Oh ffs
. Thats not what I said. Don't read stuff that isn't there. But nice try to insult someone. Trying to discredit professionals who might actually know what they're doing
There are issues, obviuosly, but they're not as wide spread as you, and others, think. Its just mathematic/ statistic facts. Kinda the same story with failing crankarms. Its happening, yes, but its not a gigantic end of the world issue. Never seen one myself, never met a person who had one broken, or been told by someones friend of a friend of a friend who had it. This forum, like any other, is for Nerds. Not even 5% of end users are active in this kind of way. So wow, great shocker, Nerds talking and complaining about their favourite thing. The rest (majority) is just riding their damn bikes, having a good time, probaly without any issues too.
I know a few WT and ex WT mechanics too, so what? They're good, but usually have no idea outside their sponsored stuff, and not what happens when there's real world wear involved. Let alone what a random Joe is doing, or not doing, with his bike. One bought a XC hardtail off me a few years back. Could've sold him anything, he had no idea and knowlege of the parts on the bike. Only thing he noticed where the small nifthy parts I've done to it. Because to that he could relate.
Mixing and matching is usually somewhat working, but if tolerances are off, it might, or will, not work. Never had issues with 12spd chains on 11spd on my bikes as well, but it doesnt always work on every bike. And there are way to many variables for it to always work.
As for the noise from the new 12spd cassettes, I would start looking at freehub bodys. Especially HG that have been used before. Look at the used material, tolerance, wear, surface finish, bearings and rachet system. I'd say 9 out of 10 times the noise, due to vibration, is coming from the freehub(body) or whats inside, not from the cassette itself. Or maybe its over/under torqued. Chances to have a shitty Zipp/Hunt/Roval/whatever freehub body with not so good tolerance are higher, then having a faulty cassette.
And if the tolerance on the body is off, the cassette not sitting quite as firm as it should, the shifting issue might come from this too. Maybe not all of it, but for some. And of course there could be, are, faulty sprokets or cassetts. Statistically there has to be (so hold your horses).