Subject: Re: Chain Rign Compatibililty Posted by: Jim on December 11, 2003 at 20:12:57: In Reply to: Re: Chain Rign Compatibililty posted by Al on December 11, 2003 at 07:04:39:

Message: >>Can an Ultegra triple chain ring set be used on a Dura-Ace triple crankset? There doesn't seem to be a 30-42-52 or 53 Dura-Ace chain ring set, and I don't like the 30-39-53 Dura-Ace standard. >NO. >The Ultegra triple crankset has standard 74BCD mounts for the inner ring. >The Dura Ace triple crankset uses a special middle chainring which apparently has a proprietary BCD inner ring -- more to the point, there are no bolt mounting holes for the inner ring on the actual Dura Ace crank arms. > Thanks. That's exactly what I was afraid of. I'll steer clear.