Joined
·
109 Posts
Hi, I'm (finally) building up my randonneur & currently have an older XT short cage rear derailleur shifting perfectly on my 12-28 & 26/36/46 setup. This XT has 10t pulley wheels & the same link & cage lengths as the 105 RD of the same MY. The cage is stamped with 28 Max Capacity & (I think?) 28 Total Capacity.
A friend gave me a Dura Ace RD 7700 that I'd like to use on this drivetrain instead, but the Max/Total listed online for the derailleur is 27 Max & 29 Total. The link lengths appear to measure the same as the XT short cage, & the cage is maybe 2mm or 3mm shorter. This DA has 11t pulley wheels.
I've found numerous threads of folks using the DA RD 7700 on 13-30 cassettes, but with only double chainrings. Is anyone here using this RD on a triple? Or know what the outer limits of gear range is for it? And will the larger 11t pulleys give me comparable chain take-up to the slightly longer XT cage?
Thanks
Greg
A friend gave me a Dura Ace RD 7700 that I'd like to use on this drivetrain instead, but the Max/Total listed online for the derailleur is 27 Max & 29 Total. The link lengths appear to measure the same as the XT short cage, & the cage is maybe 2mm or 3mm shorter. This DA has 11t pulley wheels.
I've found numerous threads of folks using the DA RD 7700 on 13-30 cassettes, but with only double chainrings. Is anyone here using this RD on a triple? Or know what the outer limits of gear range is for it? And will the larger 11t pulleys give me comparable chain take-up to the slightly longer XT cage?
Thanks
Greg