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I just purchased a Dura Ace FD-7400 from ebay. It was listed as a 6 speed front d, but I am running seven speeds. So, how does it know? Does the front d really care how many speeds there are in the back as long as there are two chainrings up front?

Thanks.
 

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7400 Fd

Allez05 said:
I just purchased a Dura Ace FD-7400 from ebay. It was listed as a 6 speed front d, but I am running seven speeds. So, how does it know? Does the front d really care how many speeds there are in the back as long as there are two chainrings up front?

Thanks.
I think you are okay

Google : "Sheldon Brown" and there is info on that site. It depends on the shifters not the derailleur.
 
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