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gbj_tester
@Scrabble
Just put a 1*11 group on the misses mountain bike. It's got an old school 135*9mm qr rear end (the bike that is).
Its running a 32 t narrow wide on the inside position of the crank and I've got all the bb spacers on the non drive side.
It's got 46 t rear cassette.
When back pedaling when on the 46 the chain falls down the cassette. It does this from the top (so I think the mech is not the issue).
The chainline looks to be the issue, but I can't do much more to bring the chain ring inboard. Do we think the monster cassette is the problem? Do these big cassettes struggle more if the chain line isn't bang on? I've never had similar issue with other cobbled together builds but I've never used a cassette this big. Perhaps a 42 would be better. Does boost spacing improve chainline for these big cassettes?