Join Date: Oct 2002
Location: Laguna Hills, OC, California
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I've done exactly that on my touring/commuting bike - spread the chainstays for XTR (135 mm) hub. The chainline of the 135mm spread is apparently better with a tripple chainring up front. I use MTB cassette in the rear, but the cog spacing is identical to the road cassette, so I don't see any problem with using road cassette. As a matter of fact, some frames have 132.5 chain stay spacing so that either type of hub can be accomodated without re-adjustment of the chainstay spread and of the derraueler (spelling?) drop geometry. I did have to fix the rear geometry, because the spread was quite large on my old bike, otherwise I couldn't get dependable shifting throughout the whole range, but now the bike is perfect.