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Sram Red 1st impressions

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Old 29-02.-2008, 06:28 PM   #16
Ainsie
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Join Date: Nov 2007
Posts: 22
Default Re: Sram Red 1st impressions
Quote:
Originally Posted by michaeltop
A couple of weeks ago I installed Red on my bike.

The front deraileur should also be capable of trim on both rings not just the top.

Sort of 1/2 of a improvement over force shifters.
Hi All,

Hoping someone can clarify

1. How does the Red trim feature (big ring trim) compare with Ultegra shifters? Do Ultegras have a big AND small ring trim or just a big ring (Red) or small ring (Force) trim?

2. Are Shimano BB cups compatible with SRAM road cranks?

Thanks,
Chris
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Old 29-02.-2008, 11:07 PM   #17
alfeng
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Join Date: Jul 2005
Posts: 2,021
Default Re: Sram Red 1st impressions
Quote:
Originally Posted by Ainsie
2. Are Shimano BB cups compatible with SRAM road cranks?
No. There are currently THREE known (to me) standards (not counting an external BMX BB that I seem to recall) that are commonly available:
  • Shimano/FSA == 24mm
  • GXP == 25mm/24mm (driveside/non-driveside)
  • Campagnolo UT == 25mm
The Force/Rival cranks use the GXP BB.

I was under the impression that the Red was going to use the UT (including a Hirth coupling), but haven't seen/heard anything regarding that, lately.
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