Bike Forums - View Single Post - Do I need a long or medium range rear derailleur?

04-05-16 | 09:44 AM

#7

bradtx

Senior Member

Joined: Jun 2010

Posts: 7,579

Likes: 6

From: Pearland, Texas

Bikes: Cannondale, Trek, Raleigh, Santana

tarwheel, A quick measurement on three RDs:

6400 short cage: just under 5 cm between pulley axles.
6500 long cage: just under 7 cm between pulley axles.
XT mtn. cage: you guessed it, just under 9 cm between the pulley axles.

Brad

PS I don't have a RD meant for a compact crank set to measure and I don't know iif they're different. I'd lean towards a mountain group's RD.

Last edited by bradtx; 04-05-16 at 10:04 AM. Reason: PS and correct measurement scale.

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