lightest centerlock rotors.

Discuss light weight issues concerning mountain bikes & parts.

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Composite World
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Joined: Mon Dec 27, 2004 11:54 am

by Composite World

i want to change my xtr 140g rotors with something lighter. any idea? thanks

grover
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Joined: Mon Jul 26, 2004 1:06 pm

by grover

hope two-piece 6 bolt rotors with dt centrelock to 6 bolt adapters. should weigh 120grams for the setup. that's the lightest i know of.

cya, john.

by Weenie


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hawkpower
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by hawkpower

try this one
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CIMG1486.JPG

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Tib
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Location: France

by Tib

Composite World requests a center lock rotor. You must add the weight of the DT adaptator !

Light center lock rotors does not exist ; there is only Shimano XTR. You must use an adaptator but I ognore its weight.

I use floating Hope rotors which weights only 87 grams, and there are full usable because of their steel rotor. But this is the 6 hole model, you will have to add the DT adaptator.
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Rotor floating 160 mm avant.JPG
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Composite World
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by Composite World

thanks for the help. i got enough with those superlightweight stuff, i wont go with stans. i am also thinking about hope. it seems like they will soon be everywhere. but if I use it with DT adapter, it will be 110, which is only 30g lighter. 60g of save for a lot of money. i think i will wait for my rotors to be worn or a light centerlock rotor. which one will be sooner? :)

besides, more part : more problem and less stiffness

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mattpage
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by mattpage

I think hope plans to bring out centrelock rotors for 2006.

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TheRedMantra
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by TheRedMantra

Its been a few years, any development?

rasputin
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Joined: Mon Jul 14, 2008 12:06 pm

by rasputin

Newest XTR rotors are a bit lighter than previously as they now use a steel/aluminum/steel sandwich for the brake surface, but still weigh in at a relatively hefty 126 g. In fairness, CL hubs are lighter than their 6 hole equivalent (15 g in the case of DT 240s, claimed weights). In spite of this, the lightest option is still an adapter with an ultralight disc, however the XTR may be better in terms of heat dissipation and durability. So do as you see fit, I like those XTR rotors for peace of mind.

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Mads Kock
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by Mads Kock

Custom job from Mattias (EP) but pretty light and ÜBER cool:

Image

BmanX
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Joined: Thu Nov 10, 2005 5:31 pm

by BmanX

Mads wins.

I have been looking at a lighter CL set-up. The best that I can see at this time would be to get the KCNC center lock adaptor and match it up with the KCNC disc.

KCNC 160mm disc 73g
KCNC center lock adaptor 29/30g

102-103g total weight.

Still not as good as Mads modified version.

However, I would like to know the weight of the XTR center lock part without the bolts and disc itself. If this was heavier than say the KCNC adaptor then maybe Mattias could do something lighter using the adaptors.
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krzysiekmz
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by krzysiekmz

There is a guy who could make 65g centerlock rotors out of Ti with aluminum spider. I think it was only a project, because of lack of interest.

Chris.
Orbea Oiz - xxxx
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Martin.F
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Location: Norway, Drammen

by Martin.F

Those Hellöre looks awesome! Light weight, but the looks of the XTR's. Me likey :mrgreen:
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02GF74
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Location: Sunny UK

by 02GF74

those look XTR carrier - is the brake disc thinner in order to get the weight down? and/or made of soemting other than steel?

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Mattias Hellöre
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by Mattias Hellöre

One pro rider for Giant Rabobank asked me to make lighter brakediscs but to retain original look of XTR ,he´s sponsored by Shimano.

So I cutted out the disc part from 6al-4v titanium and used aluminum countersunk screws.

No more mods other than that, braking performance a bit lower than original but lighter.

I´ve tested some titanium discs in the current 2 years of development, all of them does have a bit lower friction compared to steel/stainless steel rotors.

But the upside is less weight.

Haven´t tried any coating yet.

/Mattias Hellöre.
Experimental Prototype

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Mattias Hellöre
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by Mattias Hellöre

krzysiekmz wrote:There is a guy who could make 65g centerlock rotors out of Ti with aluminum spider. I think it was only a project, because of lack of interest.

Chris.


It´s Tehan at MTBR.com you are talking about?, he seems have abandon the project, maybe of high manufacturing costs, the spline interface is not easy to do in a normal machine shop.
Experimental Prototype

by Weenie


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