I gave up on mine, it ran perfect for about 3 months then started skipping in the 9t , 10t & 12t under load. Particularly the 12t.
I tried chain tension, b limiter screw but nothing worked. I replaced those 3 cogs and it worked again but only lasted 2 months. I was running a 28t front ring and wonder if a bigger front ring might of helped, though I don’t see how. The newer ones seem to have changed design a bit and are only 2 pieces not 3 so maybe this is something that’s been sorted. It was a real shame as when it worked the range was great.
Just trying to find the review I’d read where Sram mechs were struggling to hit the biggest ring and I’d mixed it up with the sunrace 11-50 cassette. Apparently Sram mechs generally didn’t work with that but Shimano ones that claimed up to a 46 tooth worked ok with it.
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