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Shimano FC-7700 vs. FC-7701 crankset-what's the difference?(5 posts)

Shimano FC-7700 vs. FC-7701 crankset-what's the difference?Major Taylor
Feb 20, 2002 4:54 AM
Anyone have a clue as to what Shimano did to make the latest crankset a FC-7701?
Just a guess,TJeanloz
Feb 20, 2002 10:08 AM
Double vs. Triple?

That would likely be 7700 and 7750 though...
re: Shimano FC-7700 vs. FC-7701 crankset-what's the difference?Eric_H
Feb 20, 2002 6:16 PM
I'd like to know this as well. Someone once tried to tell me the spline design was changed from FC7700 to FC7701. I did not believe him. The triple front crank is FC-7702.
re: Shimano FC-7700 vs. FC-7701 crankset-what's the difference?DrD
Feb 20, 2002 6:48 PM
From the shimano Europe site, it looks like the FC-7700 is the original version (came out in 98, I think) - FC-7701 is the current version - all parts are the same except for the crank arms, which appear to be more sculpted on the inner surface (material on the edges is removed). I imagine the FC-7701 is lighter as a result.

The triple is the FC7703
re: Shimano FC-7700 vs. FC-7701 crankset-what's the difference?Tosh
Feb 24, 2002 12:10 AM
FC-7700 and FC-7701 are fully compatible in any sense.
According to Shimano Japan(Yes, I am a Japanese, too!), These two models have different manufacturing method. Crankarm of FC-7700 is constructed from two metal pieces welded to each other, which is the original design
of the hollow-teck crankarm. Crankarm of FC-7701 is first forged to pipe shape and then the pedal end is pressed to close the end hole. The later method is also found on XT/LX range. This appears FC-7701 is an cost-cut version of the original FC-7700 however no functional/performance difference exist.