Discuss light weight issues concerning mountain bikes & parts.
Moderator: Moderator Team
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wingguy
- Posts: 4318
- Joined: Thu Mar 08, 2012 11:43 pm
by wingguy on Wed Jun 28, 2017 10:02 pm
LeDuke wrote:"Pro", as in once upon a time I was foolish enough to pay the UCI/USAC for a UCI elite license.
Ahh I see, it was a typo. You wrote "pro" when you meant elite.
Bloody autocorrect, happens to the best of us
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MichaelB
- Posts: 995
- Joined: Tue Apr 22, 2008 4:31 am
by MichaelB on Fri Jun 30, 2017 12:24 am
I've put out my feelers to see if I can get some to review.
There is too little detail on the site re pad material, and even construction detail for the new ones for me to stump up the 150 Euro to try.
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MichaelB
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by MichaelB on Thu Jul 13, 2017 3:08 am
sent a message to get some info re recommended brake pads and what the difference is to the previous version of the discs.
Their reply (even considering if English is a second language) was brief and meaningless, and certainly not confidence inspiring ...
>Hi,
> Wondering what the recommended pad material is for the new Ceramic Rotors ?
>
> Can you provide some information on the process used and how they are different from the RS rotors ?
>
> Thanks
>
> Michael
Hi there,
The process has been improved to increase the strength of the part and increase its useful life by 30%.
Best,
Staff
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CGT
- Posts: 342
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- Location: Stockholm, Sweden
by CGT on Thu Jul 13, 2017 4:21 pm
Just stop bothering with carbon discs. It's been proven a failure on more than one occasion.
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Kryzak
- Posts: 1
- Joined: Sat Sep 02, 2017 7:49 am
by Kryzak on Sat Sep 02, 2017 8:06 am
ATTENTION ATTENTION. I bought one of these rotor and it was already strange from the begining: no address no phone contact on their web site. Then the paiement was not secured. I received a rotor anyway. Tried it and after a few kilometers it was completely destroyed. So I tried to claim it: IMPOSSIBLE! Nobody will answer you. You will never get your money back or a replacement rotor. You have no invoice with the brake disc. Nowhere to contact them. And when you try to contact them through their formular on their web pages no one will answer you. I have pictures of the destroyed rotor. If any questions ask
pavel.kryze@gadz.org
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MichaelB
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by MichaelB on Sun Sep 03, 2017 9:35 am
This was shown well and truly in the Spanish MTV thread link on the first page.
I think that carbon as a substrate for the braking section is pretty much dead at the moment.
This is now obvious as well as the reborn Kettle (SiC Rotors) now have a Ti base for the ceramic coating. Interestingly they mention to use Swissstop exitherm pads (which have been recalled) as the ones to use.
Regardless of how well they work, I'll keep my money in the pocket for now. Still.
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UpFromOne
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TheRookie
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- Location: Midlands, United Kingdom
by TheRookie on Thu Nov 09, 2017 6:33 am
MichaelB wrote:I think that carbon as a substrate for the braking section is pretty much dead at the moment.
Carbon works fine as a braking material (and its not used as a substrate at all, best not to use big words you don't understand), the problem with the parts so far made for bikes is the matrix material is not up to the task using a polymer material instead of ceramic. It's unlikely anyone would be willing to pay the hundreds of pounds/dollars/euros for a proper carbon ceramic disc as used for cars and motorbikes.
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MichaelB
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by MichaelB on Thu Nov 09, 2017 11:07 pm
TheRookie wrote:MichaelB wrote:I think that carbon as a substrate for the braking section is pretty much dead at the moment.
Carbon works fine as a braking material (and its not used as a substrate at all, best not to use big words you don't understand), .......
Actually, it’s you who didn’t understand. I didn’t dispute that it can’t work, rather that no-one has gotten it to work successfully for a bike application, as witnessed by the lack of success from various suppliers.
Kettle ( in its various incarnations) got closest, and Alpha seem to have NFI.
So, just slow down with the holier than thou attitude and read the whole series of posts a bit better
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TheRookie
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by TheRookie on Sat Nov 11, 2017 6:34 am
Thanks for clarifying what you meant to write, and yes I've read the whole thread and you would know (having done so as well) I'd already said the same.
The irony is that in Carbon ceramic discs the braking is on the ceramic, the carbon is only really there to keep the ceramic together, these discs seem to be relying on the carbon for braking and can't make the matrix material survive at all, let alone as the actual braking surface. They seem to be little more developed than cutting a disc from a piece of a thick(ish) carbon fibre sheet (presumably pre-preg not wet lay), something you could do at home for about £20-30ea, possible less (each) for a pair (I run a CF bash guard home made that way).