Old 06-24-10, 11:57 PM
  #4  
Jeff Wills
Insane Bicycle Mechanic
 
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Originally Posted by Barrettscv
I'm considering a 26 or 28t granny gear for my Shimano 105 Crankset. The crank now has 50, 39 & 30t chainrings. I'm using a 105 triple front derailluer and an Ultegra GS rear derailluer.

I'm using a 10 speed chain.

The SG G-26 is the correct 74 BCD, but is discribed as a MTB chainring: http://cgi.ebay.com/Shimano-SG-G-26-...92346847569163
Yes. I have a variety of chainrings on my Ultegra crank:
http://home.comcast.net/~jeff_wills/...-grr%20008.htm
That's SR, a Shimano, and a Sugino rings on a Shimano crank. As long as the bolt circle matches, the rings don't care.
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