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Would my ISIS crankset work with Record BB?(8 posts)

Would my ISIS crankset work with Record BB?boat
Apr 22, 2003 1:58 PM
I'm wondering if the ISIS FSA carbon crankset will work with a normal campy record BB? if not, is there any other BB besides those from FSA that will work with my the crank?
no; ISIS and Campy not compatibleDougSloan
Apr 22, 2003 2:26 PM
Not sure of others; why not get the FSA bb?

no; ISIS and Campy not compatiblerussw19
Apr 22, 2003 7:58 PM
OK I have to ask this.. then I will answer your question for real....

Were you the kid in kindergarten that tried to pound the square block into the triangle hole?

ISIS is a lot like the Shimano Octalink Spline Pattern. It looks like they are about the same, but they really are not. ISIS was developed in the Mountain Bike world in response to Shimano making the XTR cranks in the Octalink Spline. The design is better, much much better, than a square taper spindle, but Shimano wanted to charge an arm and a leg for the patent license for the Octalink Spline. So a few companies got together and formed the ISIS Drive Standard. It was (if my memory is right) Truvativ, Race Face, and Chris King. They make the drawings and specs free to anyone who wants them, provided you don't change them. That way, it stays a standard across several brands, as opposed to what Shimano loves to do, release propriatary stuff every few years to maintain control of the market.

OK that's the tech side... here's the fun stuff... You need a new Bottom Bracket. Several companies make them. Some are pretty cheap, and some are moderate priced but way light. FSA makes some really nice bottom brackets. Their Platinum Pro Ti is really really nice and light. It's about $85 and up retail, and it weighs 170 grams. The only ISIS BB I know of that is lighter is the American Classic. The catch is the American Classic only comes in English Thread. If you ride an Italian frame, get the FSA. I have a Platinum Pro Ti with a Carbon Team C10 crank on my Pinarello. I love it. It's stiff as stiff and sweet as sweet. I can not think of a single thing I would like them to change to make it a better bottom bracket with one minor exception. The Platinum Pro Ti BB uses 15 mm crank bolts and they send alloy bolts. I would like to find a steel bolt in that size to torque down on my crank first, then remove it and put in the alloy bolt. I am worried about breaking off the alloy bolt, but the guys at FSA told me this is not an issue with their bolts unless you are the Hulk. That's why they use a 15mm bolt. But I still feel weird about cranking down on an alloy bolt.

So, long story short, do what Doug says.... get the FSA. It rocks!

Thank you very much.boat
Apr 22, 2003 8:17 PM
Slight correction...Matno
Apr 23, 2003 8:09 PM
Chris King never endorsed the ISIS standard or made BB's that used the design. They did their own testing and decided the design wasn't strong enough. Turns out, they were probably right. Problem is that there just isn't enough room for proper bearings in there (or something to that effect). Also, the design has been plagued with slight compatibility issues - different tolerances between manufacturers that are enough to cause headaches. Now, if you hop on MTBR and do a search for ISIS problems, you will find that an inordinate number of people are having them crap out really fast. I guess that's why more companies are now paying to license the Shimano design. It's just better (like a lot of things from Shimano. You may find comparable stuff out there, but few things are significantly better, and they're usually more expensive.

Just my two cents... (Can you tell I like Shimano? I also like Microsoft, but that's a topic for another forum!)
Slight correction...russw19
Apr 24, 2003 9:42 AM
Thanks for the correction.. I though King was involved too... but backed out later. I know they were planning their own BB, but don't have the time to make the machines to make the BB.

Anyways, have you seen that new Phil Wood BB that is on the tech section of They want to almost double the size of the shell. It's an interesting article.

Anyways, thanks for the correction.

You mean like Cannondale?Matno
Apr 24, 2003 2:55 PM
Their oversized bottom bracket shell (with corresponding cranks) they use seems to be a real hit among those who can afford it. Too bad it's not compatible with any other frames...

Sounds like Shimano may be fitting an "oversized" BB into a standard sized shell with their new DuraAce group. Kind of like the new XTR design. Looks promising. It's always nice when new stuff is "backwards compatible"...
You mean like Cannondale?russw19
Apr 25, 2003 7:38 AM
The Phil is HUGE!!!! Bigger than the Cannondale design. I rode one of those for about 6 months... that's a nice set up on the 'dale. The only problem is you are limited to that and that alone. You would have figured that Cannondale would have figured that out with the Coda Magic Motorcycle crank that Alex Pong designed. Worked great, bout now you can't get parts for it. not even chainrings which used a 3 bolt design. Proprietary stuff, no matter how good it is, usually has a huge drawback.

Of course this is nothing new... Schwinn did it all back in the 60's and 70's. Still some companies never learn.... or is it consumers who never learn? I forget.