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Will this combination work? Want to run it on Cotic Soda as 2x11 with 11-34 cassette, XT rear mech. Any thoughts on this please?
Don't think the XT front mech is rated to shift up to a 46T chainring. The largest XT double chainset is 28/38.
I've got the same 'cross 36/46 chainset and use a Ultegra di2 front mech
Go Ultegra, or maybe GRX?
Also need to have right chain line. The ultegra rings may be nearer the seat tube than a MTB chain set is. With a 68mm bottom bracket shell one can sometimes hack it by moving a spacer to the other side but with a 72 mm shell your bike has that might not be possible.
Cable pull is different between MTB and Road shifters so unless one has a ratio change adaptor a road mech might not work with mtb shifters. But can get flat bar road shifters.
Is the distance between the chainrings the same on XT and Ultegra chainsets? If so, surely the XT shifter I already have will work with the mech? The tooth difference is 10 on each one, so I'm struggling to understand why the XT mech would be unable to cope with shifting to the 46 tooth from the 36 - surely just mount it a bit higher up the seat tube? Or is there a good reason why not? Currently have a 1x48 NW chainring on it, but wouldn't mind some choice of lower gears, but not the ludicrously low ones that modern MTB chainsets force you towards. I'm still on 26" wheels and not interested in changing them yet.
I haven't done that specific setup but my experiences of MTB mechs on road chainsets is that it doesn't work.