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Discussion Starter · #1 ·
What's the difference between "maximum sprocket" and "total capacity" for a derailleur?

Shimano's website says the RD-7700 and RD-7800 have a max sprocket of 27T and a total capacity of 29T. While the RD-7703 has a max sprocket of 27T and a total capacity of 38T.

What is "total capacity"?
 

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Discussion Starter · #6 ·
Drone 5200 said:
What's the difference between "maximum sprocket" and "total capacity" for a derailleur?

Shimano's website says the RD-7700 and RD-7800 have a max sprocket of 27T and a total capacity of 29T. While the RD-7703 has a max sprocket of 27T and a total capacity of 38T.

What is "total capacity"?
WOW! I'm impressed. You are a knowledgeable crowd. Thanks for sharing the wisdom. And so fast, too.

One follow-up: Is that 27T max for real? Anyone with experience using a 29T on the RD-7800?
 
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