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Is ISIS drive compatible with Shimano Octalink?(11 posts)

Is ISIS drive compatible with Shimano Octalink?Trek Racer X
Nov 26, 2002 11:44 AM
Is an FSA Ultimax Xtreme Pro Ti Bottom Bracket (ISIS) compatible with a Shimano Dura-Ace Double 7700/7701 Crankset (8-spline V1)? This may seem like a stupid question, but I'm wondering if the two are compatible.

Any feedback is appreciated.

-Trek Racer X
No (nm)TJeanloz
Nov 26, 2002 11:51 AM
No--and the explanationTrekFurthur
Nov 26, 2002 11:56 AM
ISIS was begun to combat the Big S and its domination of cycling componentry; several companies were involved.
No--and the SIMPLE explanationgrzy
Nov 26, 2002 12:05 PM
They're different since the Shimano design is patented.
Isn't 'no' the simplest explanation?TJeanloz
Nov 26, 2002 12:54 PM
Installing an Shimano crank on an ISIS bottom bracket would be like trying to fit a square peg into a round hole. Or actually, more like a decagonical peg into an octagonal hole.

Is that simple enough?
LOL! Truer words were never spoken (nm)jeph
Nov 26, 2002 12:57 PM
........trekkie1
Nov 26, 2002 2:52 PM


"No" doesn't *explain* anything. - nmgrzy
Nov 26, 2002 5:56 PM
re: Is ISIS drive compatible with Shimano Octalink?JFST
Nov 28, 2002 6:42 AM
No they're not. There are basically 3 types of splines out there. ISIS which was developed primarily by mountain bike parts manufacturers such as Race Face, Truvativ, and Chris King. I haven't seen anyone use ISIS for road cranks yet. There's Shimano's Octalink which is used for XT and LX mountain bike cranks. This is the only type of spline that shimano will license to other manufacturers. Some manufacturers use this system for their road cranks. Lastly there is the V1 spline used in 105, Ultegra, Dura-Ace, and XTR cranks (except 2003 XTR).
Truvative ISIS road cranksTrek Racer X
Dec 1, 2002 7:03 PM
Truvative makes a medium-high end road cran that uses an ISIS drive crankset.

-Trek Racer X
C'dale Sigrzy
Dec 3, 2002 11:42 AM
I think C'dale has been using some form of splined BB on it's newer CAAD 6 road frames.