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Old 02-03-12, 09:23 AM
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strock 
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Location: Hudson Valley, NY
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Originally Posted by fuzz2050
As I recall the Cross Check comes speced with a triple, but with only two rings. You should be able to just remove the crankset, remove one of the outer chainrings, replace the chainring bolts with short stack ones, and add an inner ring. The derailer works fine with a triple, or wide double, and so should the bottom bracket.
+1 Assuming you have the stock crankset, you should, I think, have 36t and 48t rings on 110 BCD. If the driveside crank has a set of bosses at 74 BCD, then, as fuzz2050 says, just add a 74 BCD inner ring. If you choose a 30t one, then you could probably use the existing 48t outer ring and have a 30-48 wide-range double, which is very close to the 30-46 Polyvalent. You could go with a smaller inner ring, of course, but then you'd probably want a smaller outer ring as well.
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