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BB spacer?
Hammer?
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New bike?
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One less tooth means about 2mm less radius, probably not enough. You can't move Omnomnoms to the right, at least not by much. You could face a bit off the NDS of the BB she'll and maybe shim between the axle step and the NDS bearing, but that's a lot of hassle for 1mm.
Custom dished chain ring is obviously the way to go, should be no more than £300 if we bundle it in with my 56T VumaChrono special ☺
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Can't believe nobody has suggested making a dimple in the chainstay with a vice:
http://forums.mtbr.com/frame-building/chain-stays-dimples-wide-tires-801354.html#post9501052
TM
gbj_tester
Tijmen
@ewanmac
What's the solution to this? It rubs, only just, but it definitely rubs. @mdcc_tester would your 55t chainring have a small enough diameter to fit? What are the other options? Crimping the chainstay seems a bit drastic?
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