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Old 09-17-17, 10:56 AM
  #13  
Eggman84
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Join Date: Nov 2016
Location: SoCal
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Bikes: 2014 Bruce Gordon Rock&Road, 1995 Santana Visa Tandem, 1990 Trek 520, 2012 Surly LHT

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Originally Posted by supperap View Post
There are more problems to that: first The 48t is too big for me, and the outer 48t chainring have a bad chainline. And the q-factor for the chrankset is too large (175mm) for touring/Racing my bike.
If I read this right, the OP is wanting a chainline of 49mm (same as the current triple crankset), yet is complaining that the existing outer 48t chainring is a bad chainline (I assume they mean they can't use the large chainring with all the cogs on the cassette) and the Q-factor is to big. If you want to go with a double, but be able to use all the cogs with both chainrings on double crankset, and reduce the Q factor, then you are going to have to reduce the overall chainline some. I don't think the 49mm is not a number that has to be adhered to.
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