Direct mount rear brakes for 28mm rims

Discuss light weight issues concerning road bikes & parts.
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epoklar
Posts: 3
Joined: Thu Aug 09, 2018 10:39 am

by epoklar

The last piece of the puzzle for my new chinese bike build are some dm rear brakes for my 28mm carbon rims. I can't seem to find any that fits.

I have tried the new sram s900, but no dice.
I have also tried Ultegra R8010-RS Direct with the thin shimano brake pads for carbon rims, but still not enough clearance.

Do the dura ace r9010 have more clearance than ultegras? according to the manual both should clear 28mm rims with the thin brake pads, but i'm not sure since the ultegras certaintly didn't.

prebsy
Posts: 782
Joined: Tue Oct 23, 2012 10:52 pm
Location: PHL

by prebsy

i was pretty bummed by this exact situation on my felt AR. I "solved it" by removing the conical washer behind the pad holder. It's not perfect but gets you an extra 1.5-2mm of clearance
Last edited by prebsy on Thu Aug 09, 2018 3:42 pm, edited 1 time in total.

by Weenie


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wheelsONfire
Posts: 2064
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

That seems weird. I have Easton Aero 55 (these were probably among the fattest when they came out) and the 2015-2016 EE brakes, not direct mount, but i have lots of clearance so i could probably use 30mm rims without issues.
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epoklar
Posts: 3
Joined: Thu Aug 09, 2018 10:39 am

by epoklar

wheelsONfire wrote:
Thu Aug 09, 2018 12:25 pm
That seems weird. I have Easton Aero 55 (these were probably among the fattest when they came out) and the 2015-2016 EE brakes, not direct mount, but i have lots of clearance so i could probably use 30mm rims without issues.
I'm pretty sure the eebrakes will solve my problem, but they will, unfortunately, create a new problem, a financial one.

epoklar
Posts: 3
Joined: Thu Aug 09, 2018 10:39 am

by epoklar

prebsy wrote:
Thu Aug 09, 2018 12:22 pm
i was pretty bumped by this exact situation on my felt AR. I "solved it" by removing the conical washer behind the pad holder. It's not perfect but gets you an extra 1.5-2mm of clearance
I will try removing the washers.

bilwit
Posts: 967
Joined: Sun Apr 03, 2016 5:49 am
Location: Seattle, WA

by bilwit

if you only need a few hairs of clearance, EE brakeshoes might do it. They have lower stack than Shimano or SwissStop shoes

Bluechip
Posts: 82
Joined: Thu Nov 12, 2015 2:04 am

by Bluechip

I've got some Farsport rims that are very wide. 29mm I think. I just got a set of Tririg Omega X brakes and they work great. Plenty of clearance with 25mm Conti GP4000s's measuring out at 30mm. No more shaved pads for me. Mine are regular mount but it is also direct mountable.

Jereb
Posts: 4
Joined: Mon Jan 15, 2018 9:16 am

by Jereb

Bluechip wrote:
Thu Aug 09, 2018 5:15 pm
I've got some Farsport rims that are very wide. 29mm I think. I just got a set of Tririg Omega X brakes and they work great. Plenty of clearance with 25mm Conti GP4000s's measuring out at 30mm. No more shaved pads for me. Mine are regular mount but it is also direct mountable.

Hi

Tririg worked on my 2018 AR 1 also.
The bottom mounts suck with dirt accumulation after a rain ride.
A TRP 860 have a lot of room but never used one yet.
Jere B

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Beaver
Posts: 501
Joined: Wed Aug 18, 2004 6:06 pm
Location: Lower Saxony - Germany

by Beaver

It's really strange, that there are not many models for wide rims yet. Bontrager Speed Stop Pro would be another alternative.

I would wish for a TRP T980 in a SL Magnesium version - would be stiff, pretty and light.

kode54
Posts: 1325
Joined: Tue May 23, 2006 9:39 pm

by kode54

yeah. the very reason why my rear eeCycle rear DM brake failed.

I noticed some brake rub and looked and found the centering device tab broke off...rendering the brake to skew to one side. not sure how the warranty is on them, now that Cane Creek bought them out.

The entire assembly was so mucked up because of all the dirt and grime.


Jereb wrote:
Thu Aug 09, 2018 6:48 pm
Bluechip wrote:
Thu Aug 09, 2018 5:15 pm
I've got some Farsport rims that are very wide. 29mm I think. I just got a set of Tririg Omega X brakes and they work great. Plenty of clearance with 25mm Conti GP4000s's measuring out at 30mm. No more shaved pads for me. Mine are regular mount but it is also direct mountable.

Hi

Tririg worked on my 2018 AR 1 also.
The bottom mounts suck with dirt accumulation after a rain ride.
A TRP 860 have a lot of room but never used one yet.
Jere B
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- Parlee ESX + DA9150 + THM SRM PM + Enve SES 6.7 CK hubs
- Guru Praemio R Titanium + DA9150 + Enve 3.4 CK hubs

by Weenie


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