General Discussion Triathlon Talk » Bottom Bracket Question Rss Feed  
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2009-08-13 9:59 AM

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Subject: Bottom Bracket Question
My current BB has a lot of miles on it and is starting to "skip a beat." I'd like to replace it but need to make sure I'm buying the right thing.

I'm running an FSA SL-K carbon compact crankset with a 68mm MEGA EXO BC1.37X24T BB (English)

A friend has a brand new Dura Ace 7800 68mm BC1.37X24 BB (English)

Are the two interchangeable, or do I have to stick with FSA because the crankset is FSA?

Trying to learn this stuff so I can save a little $ at the shop!

Thanks in advance,
-j


2009-08-13 10:39 AM
in reply to: #2346100

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Subject: RE: Bottom Bracket Question

I think you at least have to stay with MEGA EXO.

2009-08-13 1:34 PM
in reply to: #2346100

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Subject: RE: Bottom Bracket Question
You need to use FSA. BTW all of the people I know with FSA BB don't like them, find they get gunky and wear quickly.

I just replaced my SRAM BB and debated whether or not to use an other stock one or go ceramic. I ended up doing this: http://www.enduroforkseals.com/id226.html That is the FSA one. Better seals than stock, better bearings, spins smoother and not is not crazy $$$ like other ceramic options.
2009-08-14 8:49 AM
in reply to: #2346100

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Subject: RE: Bottom Bracket Question
Both FSA and Shimano say no. I've used an FSA crank with a hollowtech2 BB, about 12k miles on that setup no problems. The frame I had at the time used an Itallian thread BB, and FSA didn't offer that at the time, so it was Shimano or nothing. I've also used a XT (shimano) crank with a megaexo BB, also no probs.

In other words, yes, they are interchangeable. You could spend all day with a micrometer on both and not find a single measurement that's different, only the color.

Edited by fausto 2009-08-14 8:51 AM
2009-08-14 2:49 PM
in reply to: #2346100

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Subject: RE: Bottom Bracket Question
Thanks to all! Your responses and info have been VERY helpful. -j
2009-08-17 3:47 AM
in reply to: #2346100

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Subject: RE: Bottom Bracket Question
I FSA cranks with Dura-Ace bottom brackets on three different bikes... probably a combined 20k miles on the three over the last 3 years... and no problems


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