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In doubt as to what i should choose my my cross-rig - TRP CX 8.4s or Avid Shorty Ultimates? I realize that these are fundamentally different, but it seems that people are well satisfied with both.
Wheels are Zipp 303, environment is forest with some mud - but not Belgian-style mudfests.
I have heard/read people comment negatively on 8.4s' clearance. N=1 here in the US Pacific Northwest, I've put them through thick grass and mud and feel I don't give up anything to the guys on cantis. Other comments re: modulation, again, N=1 and I have had no issues.
I will say the key (for me) to making the 8.4s far FAR superior to cantis, was finding the optimal pads for the wheels I run.
@jcrr: any experience with pads for carbon rims?
@Briscoelab: Confused... i thought the CX9s were made for Shimano and the 8.4s specifically for SRAM / Campy?? I use SRAM Force levers from 2011.
This is the (limited) knowledge that has been passed down to me:
*Zipp Cork work best with (my) Eastons (EC90SLX). Swisstop yellow not so good, and Reynolds, not good at all.
*Reynolds Cryo Blue work best with Reynolds wheels.
*Zipp Cork or Tangente Platinum Pro work best for Zipps.
Realize you will loose some power in wet conditions. The above combos loose the least. I can speak for the first combo, and the other 2 combos is what I hear from close friends who run those.
As far as your comment to Briscoelab- 8.4s for Sram; 9.0s for Shimano. You are correct-They were specifically designed to match the cable pull of each. No clue for Campy.
jcrr wrote:As far as your comment to Briscoelab- 8.4s for Sram; 9.0s for Shimano. You are correct-They were specifically designed to match the cable pull of each. No clue for Campy.
I've used both the 9.0 and 8.4 with Campy, I far prefer the 8.4's. I believe SRAM & Campy levers pull similar amounts of cable.
I've mentioned it in other threads, but +1 on no mud clearance issues with 8.4's. That includes 2012 Masters World Championships where bikes were coated with thick, grass-laden, freezing mud. Wheels spun freely the entire time.
Even TRP/Shimano sponsored riders, like Molly Cameron here in the US, switched to the 8.4s with Shimano levers as soon as they came out. Better brakes all around.
Campy and Sram levers do pull similar cable, that's why they are really not suited to the cx9 brakes at all. I feel they are OK with the 8.4, but not not ideal. I would rather have a narrow profile, well setup, canti brake with either of those systems (and I've personally used both types on Sram and Campy).
Affordable Taxi at your door step
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Thanks again for your advice and opinions!
Should be said, however, that the clearance it not impressive (in my setup) and the race was not especially muddy.
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