I've just replaced the cassette and chain and discovered that the chainrings needed to be replaced as well. This is an older 3 ring crankset (maybe 12 years old or so)on an 8 speed GT. I replaced the middle and outer ring, .. 32 and 44. No problems except that the chain doesn't have enough room now to fall onto the small chainring which I didn't replace. That ring seemed alright and I'm budget friendly so didn't replace it.
..but there just isn't quite enough room with the new rings. At first I thought maybe I didn't have the ring bolts tight enough as I could see a little of the bolt. I tightened them up which brought the middle ring pretty much flush with the cranks but there still isn't enough room for the chain to get contact with the small ring. I think it's off just about a mm or so. I replaced the middle and outer ring with FSA MTB rings compatible with 8/9 speeds. These two rings shift fine with each other. Just gets caught up in small ring.
So, ... what can I do here?? Do I need to replace my small ring with the remaining ring in the FSA set?? Would that work do you think? Is this because I'm trying to replace an older set with new (improved) ones. Seems like the new middle ring has a bigger slanted slope to help shift than the worn ring I replaced. It would make sense that it would inhibit shifting to the small one. Just wondering if I just buy and replace the small one in the set if that would fix the issue. That would be a pain, but I'd do it if I knew it would work. Any advice greatly appreciated. Kinda stuck here.
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