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Home > Forum > Triathlon Forum > Mechanic geeks - BB size / compatibility

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Mechanic geeks - BB size / compatibility
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Diesel
Sep 18, 06 21:52
Post #1 of 8 (1181 views)
Upgrading my cranks on my CX bike and probably will get a 110mm set-up, probably the FSA SLK Cross. Not sure yet.

I have DA 7800 on my road bike and would like to use a compact in (1) event next year.



Does the FSA SLK 110 fit/work on a DA 7800 bottom bracket? Sure would be nice just to swap out cranks and not BBs. The other option is to buy an Ultegra compact for CX.....which I would be swappable, but haven't check the tech manual.

thanks
Last edited by: Diesel: Sep 18, 06 23:05
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Re: Mechanic geeks - BB size / compatibility [Diesel] [ In reply to ]
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Tommy Nelson
Sep 18, 06 21:57
Post #2 of 8 (1172 views)
FSA cranks...new ones that is, will only work with an ISIS BB or their own BB, whatever that is called...mega XO or something. Those should come with the crank. You won't have to use your DA BB with it.
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Re: Mechanic geeks - BB size / compatibility [Tommy Nelson] [ In reply to ]
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Diesel
Sep 18, 06 22:00
Post #3 of 8 (1170 views)
Why not?

Do you have the tech manuals and measurements or have you tried to mix/match Shimano external and FSA external parts?
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Re: Mechanic geeks - BB size / compatibility [Diesel] [ In reply to ]
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Tommy Nelson
Sep 18, 06 22:09
Post #4 of 8 (1166 views)
Well...take this for what it is, but this is straight from their website:

Are MegaExo cranks cross-compatible with outboard bearing standards of other manufactures?





Our cranks, bearing cups, and spacers are designed to work together. We cannot advise using our components with other manufacturer’s cranks and/or cupsets. Should you need replacement cups or small parts these are available through Full Speed Ahead or your local dealer or on-line retailer.

Were it my bike, i would try it. Were it a customer's bike, no way.
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Re: Mechanic geeks - BB size / compatibility [Diesel] [ In reply to ]
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JohnA
Sep 18, 06 22:21
Post #5 of 8 (1162 views)
You could always go with the Ultegra compacts, then it wouldn't be an issue.
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Re: Mechanic geeks - BB size / compatibility [JohnA] [ In reply to ]
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Diesel
Sep 18, 06 22:23
Post #6 of 8 (1160 views)
Right...but they aren't sexy carbon and I'm limited in chainring sizes/availability.

;o)
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Re: Mechanic geeks - BB size / compatibility [Diesel] [ In reply to ]
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SuperDave
Sep 18, 06 22:59
Post #7 of 8 (1151 views)
I've used this set up, but must concur with FSA that their BB is the best choice for their cranks.



You can use any 110mm BCD chainrings w/ R-600 compact cranks from ShimaNO.



-SD
https://www.kickstarter.com/...bike-for-the-new-era
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Re: Mechanic geeks - BB size / compatibility [SuperDave] [ In reply to ]
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Diesel
Sep 18, 06 23:17
Post #8 of 8 (1148 views)
I'm pimping my F1X....post pix when done. Here's when it was an ugly duckling. I'm WAYYYYY behind on this as MTBing got the best of me the past month.

Upgrades:
  • Cranks (Ultegra compact - single 42 or 46/36)
  • Drive train to 10 speed (Ultegra)
  • Brakes (IRD)
  • New seat (Aliante)
  • Wheels (Hed Bastone)
  • Tires (Tufo Tubular-clinchers)
  • Stem to larger clamp (Thomson)
  • New Bar (Easton EC90 pro bend)



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