Road Disc Brakes- Rotor Choice

Discuss light weight issues concerning road bikes & parts.

Moderator: robbosmans

spdntrxi
Posts: 4146
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

I'm still waiting for Absoluteblack "raven sl"... spring 2021 now, I'm told
2019 BMC TM01 Road UCI config 7.36kg

RDY
Posts: 164
Joined: Thu Jul 30, 2020 10:31 pm

by RDY

Are they still going to produce the Titanium ones? Which they say are ISO ... But everybody uses CL on the road??

by Weenie


Pinguin
Posts: 248
Joined: Fri Nov 02, 2018 9:28 pm

by Pinguin

Zappano wrote:
Tue Nov 03, 2020 7:52 pm
Pinguin wrote:
Frisco wrote:
Sun Sep 27, 2020 3:36 am
Galfer 160 centerlock

Image
Not really weightweenie
Are the Galfer 6bolts lighter as the centerlock version?
That‘s the MTB version. The road version (Galfer wave fixed road centerlock) weighs 98g (160mm) and 76g (140mm).
Definitely the best discs I’ve used. Can recommend.
Im between the Galfer Centerlock and Xtr Discs for my new Roadbike
Are there real world comparisons between these rotors?
Galfer is lighter,but as good as Xtr?

Ritxis
Posts: 608
Joined: Fri Jun 01, 2012 3:00 pm
Location: San Sebastian

by Ritxis

Pinguin wrote:
Sun Nov 08, 2020 10:14 am
Zappano wrote:
Tue Nov 03, 2020 7:52 pm
Pinguin wrote:
Frisco wrote:
Sun Sep 27, 2020 3:36 am
Galfer 160 centerlock

Image
Not really weightweenie
Are the Galfer 6bolts lighter as the centerlock version?
That‘s the MTB version. The road version (Galfer wave fixed road centerlock) weighs 98g (160mm) and 76g (140mm).
Definitely the best discs I’ve used. Can recommend.
Im between the Galfer Centerlock and Xtr Discs for my new Roadbike
Are there real world comparisons between these rotors?
Galfer is lighter,but as good as Xtr?

The Galfer are not worse, nor will I say that they are better

I have used XTR and XT with 105 calipers and Galfer Road Wave (6 hole) with SLX/RS785 calipers

Zappano
Posts: 41
Joined: Sun Nov 05, 2017 3:24 pm

by Zappano

Ritxis wrote:
Pinguin wrote:
Sun Nov 08, 2020 10:14 am
Zappano wrote:
Tue Nov 03, 2020 7:52 pm
Pinguin wrote: Not really weightweenie
Are the Galfer 6bolts lighter as the centerlock version?
That‘s the MTB version. The road version (Galfer wave fixed road centerlock) weighs 98g (160mm) and 76g (140mm).
Definitely the best discs I’ve used. Can recommend.
Im between the Galfer Centerlock and Xtr Discs for my new Roadbike
Are there real world comparisons between these rotors?
Galfer is lighter,but as good as Xtr?

The Galfer are not worse, nor will I say that they are better

I have used XTR and XT with 105 calipers and Galfer Road Wave (6 hole) with SLX/RS785 calipers
The brake pads are also important. I would recommend the Galfer road brake pads for Galfer discs. No squeal and good power (even on long descents).
Didn‘t have luck with Shimano brake pads and discs.
S-Works Tarmac SL7
S-Works Tarmac SL6 Disc (6.6kg)
S-Works Tarmac SL6 Rim (6.8kg)
S-Works Epic HT (8.8kg)

Ritxis
Posts: 608
Joined: Fri Jun 01, 2012 3:00 pm
Location: San Sebastian

by Ritxis

Zappano wrote:
Sun Nov 08, 2020 2:16 pm
Ritxis wrote:
Pinguin wrote:
Sun Nov 08, 2020 10:14 am
Zappano wrote:
Tue Nov 03, 2020 7:52 pm

That‘s the MTB version. The road version (Galfer wave fixed road centerlock) weighs 98g (160mm) and 76g (140mm).
Definitely the best discs I’ve used. Can recommend.
Im between the Galfer Centerlock and Xtr Discs for my new Roadbike
Are there real world comparisons between these rotors?
Galfer is lighter,but as good as Xtr?

The Galfer are not worse, nor will I say that they are better

I have used XTR and XT with 105 calipers and Galfer Road Wave (6 hole) with SLX/RS785 calipers
The brake pads are also important. I would recommend the Galfer road brake pads for Galfer discs. No squeal and good power (even on long descents).
Didn‘t have luck with Shimano brake pads and discs.
I have no complaints about Galfer rotors with Shimano pads

riochang
Posts: 139
Joined: Fri Feb 19, 2016 4:48 am

by riochang

I've bought a pair of galfer centerlock rotors, they are indeed very light.
Actual weight 160mm = 98g, 140mm = 78g, included lock ring = 12g each.
Fitted the 160mm on my bike for a quick test and performance seems on par with my existing sram centerline x rotor.
Last edited by riochang on Fri Nov 13, 2020 4:11 pm, edited 1 time in total.

RDY
Posts: 164
Joined: Thu Jul 30, 2020 10:31 pm

by RDY

New to centrelock (have previously used 6 bolt).

Can anybody tell me what type of lockrings I need? Do I need to use the chunky ones with external teeth cutouts for locking, or can I also use cassette lockrings with 12 internal diameter teeth?

There seems to be conflicting information. It's for 12mm thru axles on BX312 hubs.

There seems to be some suggestion I can use the smaller cassette lockrings if below 15mm axle.

icantaffordcycling
Posts: 1343
Joined: Wed Jan 09, 2019 5:03 am
Location: Bay Area, CA

by icantaffordcycling

External will always work if you want to be on the safe side.
Internal works with most 12mm hubs.

iamraymond
Posts: 346
Joined: Wed Jun 28, 2017 8:59 am

by iamraymond

In my experience, the Galfer rotors paired with shimano pads have better performance in terms of noise then the XTR rotors with Shimono pads. I have not tried the Galfer pads yet Since I am satisfied with the Shimano one

nino10
Posts: 28
Joined: Sun Aug 09, 2020 2:32 pm

by nino10

BladeRS14.jpg
Trying out something "new" for 6-hole
CarbonTi X-Rotor SteelCarbon 2 brake discs
in 160 mm (78g):
- first impression (with SHIMANO brake pads L03A resin) is good
- came very nicely finished and without "imbalances".
brake performance under dry conditions on the "first kilometers" good
(so far not as aggressive as the Dura Ace brake disks, but well dosed and apparently sufficient for my system weight of u80kg/ unobtrusive in terms of heat and noise - so far (no high mountains so far)
Compared to the FSA, I would not see any noticeable difference in terms of "aggressiveness".
All this only so far, because I tried to brake the new discs and pads in the best possible way - but maybe this can be done even better.
Currently I can only judge distortion and fading on the basis of a few small downhill runs - the X-Rotor were absolutely inconspicuous - braking absolutely evenly until the end of the tour, no "stuttering", no squeaking, no warping...
(Whereas the FSA had to be "bent" once and was noticed with a slight "rubbing" incl. noise - nothing serious, but unknown to me from the Dura Ace before). (Brakes always meticulously bled).
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iwallake
Posts: 24
Joined: Thu Apr 30, 2020 2:34 am

by iwallake

Any aero savings to a 140mm front rotor?

User avatar
cyclespeed
Posts: 794
Joined: Mon Jun 06, 2016 8:45 am

by cyclespeed

iwallake wrote:
Tue Nov 17, 2020 6:41 pm
Any aero savings to a 140mm front rotor?
Miniscule.

MichaelB
Posts: 805
Joined: Tue Apr 22, 2008 4:31 am

by MichaelB

cyclespeed wrote:
Tue Dec 01, 2020 12:29 pm
iwallake wrote:
Tue Nov 17, 2020 6:41 pm
Any aero savings to a 140mm front rotor?
Miniscule.
More like immeasurable.

by Weenie


jeanjacques
Posts: 337
Joined: Thu Apr 14, 2016 11:01 am
Location: France

by jeanjacques

Hello, did somebody try a XT/XTR rotor on a Campagnolo groupset ? Campy pads seems larger and may interfere with the alloy part of the Shimano disc ?

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