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Just curious...Shimano octalink?(8 posts)

Just curious...Shimano octalink?msmootsiemartin
Mar 2, 2003 9:36 AM
What exactly does "octalink" mean on the Shimano cranks? When did they switch over to octalink? Any info is helpful. Thanks!
re: Just curious...Shimano octalink?rufus
Mar 2, 2003 9:51 AM
octalink is the name shimano uses for their splined bb/crank interface. just simply a marketing tool. their splined system isn't compatable with the isis standard developed by raceface, truvativ and others, though.

first octalink was what, 3 or 4 years ago?
re: just a bit more info...Akirasho
Mar 2, 2003 10:36 AM
... as mentioned, Octalink is incompatible with the ISIS system (both being incompatible with square taper) which was reportedly conceived to address a couple of shortcommings in the Shimano design, and because at the time, Shimano was not licensing (or at least licensing to everyone) Octalink to aftermarket producers (the abovementioned TruVative, RaceFace, Chris King, etc.)

At some point, this changed and you'll find several makers now sporting square taper, Octalink and ISIS versions... thank gawd for standards... At least bottom brackets are relatively cheap.

Be the bike.
Mar 2, 2003 12:13 PM
As long as ONLY Shimano was able to use their spline pattern, they didn't need a catchy name. Now they are allowing other manufactures to make cranks that will fit their bottom brackets. To prevent confusion with other spline systems, they call it octalink.
I wonder what type of system they will have on next years Dura Ace.
Good question...Akirasho
Mar 2, 2003 12:28 PM
... since reports have it similar to the '03 XTR which is yet again, incompatible...

Be the bike.
believe octalink is second version of shimanojiggs
Mar 2, 2003 3:25 PM
splined crankset/bottom bracket interface(octa-eight spline) used on the Deore ,LX , XT.
The XTR, Ultegra, Durace was the first and the NEW 2003 XTR is an integrated hollow bottom bracket/crank arm so it is all by itself, compatible with nothing else.
Mar 2, 2003 8:00 PM
No, the old (2002) XTR and all the splined road cranks have the original 8 spline (octalink). The XT & LX have a different spline the uses a different bottom bracket. Doesn't Deore have an old style square hole, or did they change it over to be like LX ??
Deore ES-50 is same spline as LX/XT ES-70 now, andjiggs
Mar 2, 2003 8:18 PM
I guess OCTALINK is both I don't know for sure. We just referred to XTR and Octalink to keep the two separate. They still have the Deore UN40 square BB listed on Shimano sight though.