ceramic rims
ceramic rims
i've blundered onto a pair .
are special blocks a necessity? or do they work okay with the usual ?
are special blocks a necessity? or do they work okay with the usual ?
Re: ceramic rims
often; special blocks to start with, then once the rims are worn smooth, ordinary ones can work OK.
cheers
cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
Re: ceramic rims
Just do take care in the wet until you are sure you know how they react.
My Mavic Ceramic rims are lethal in the extreme wet, like thunderstorms, gutters or even wet grass. They never dry off basically.
I found that specific pads or not this behaviour remained the same. In the dry or slight wet braking was great.
I ended up using them on the rear only, saved wearing out rims and kept things a lot cleaner. I have worn out one rim, and another on a different bike should be retired shortly. Can't even remember when we had them, may even be 20 years ago.
My Mavic Ceramic rims are lethal in the extreme wet, like thunderstorms, gutters or even wet grass. They never dry off basically.
I found that specific pads or not this behaviour remained the same. In the dry or slight wet braking was great.
I ended up using them on the rear only, saved wearing out rims and kept things a lot cleaner. I have worn out one rim, and another on a different bike should be retired shortly. Can't even remember when we had them, may even be 20 years ago.
Re: ceramic rims
Are they ceramic (Mavic?) or CSS Tungsten Carbide impregnated? My Mavic Open Pro ceramics work best with Koolstop Salmon pads. I also use those with my CSS Tungsten Carbide rims, though they do squeal a little. I've not found the ceramic specific blocks any use. Koolstops work just as well at stopping, possibly better, and don't wear down too quickly.
Re: ceramic rims
They do last a VERY long time. I've got a pair of Mavic ceramics from 1986. Been pressed into action every winter since, nearly 30 years.
Re: ceramic rims
they're mavic T217 36H rims. seems to have never been laced. just wondering what to do with them and therefore which blocks (if any) i'd need to get on that bike. they do look very similar to their CD finish but, from what i read, the surface should last longer.
i'm intrigued as to why they'd be worse in extreme wet weather. do they hold water to the surface?
i'm intrigued as to why they'd be worse in extreme wet weather. do they hold water to the surface?
Re: ceramic rims
Try Koolstop salmons with them. They can also be a bit grabby when new, so exercise a bit of caution until you get to know them. But barring mishaps they last for years. My Open Pros are so old I'm not sure when I got them, and they are unmarked.
Re: ceramic rims
mig wrote:they're mavic T217 36H rims. seems to have never been laced. just wondering what to do with them and therefore which blocks (if any) i'd need to get on that bike. they do look very similar to their CD finish but, from what i read, the surface should last longer.
i'm intrigued as to why they'd be worse in extreme wet weather. do they hold water to the surface?
Hey mig, I know this is like 5 years ago but do you still have your T217 Ceramics? I’m actually looking for a pair if you want to sell them? Cheers
Re: ceramic rims
guglielmo wrote:mig wrote:they're mavic T217 36H rims. seems to have never been laced. just wondering what to do with them and therefore which blocks (if any) i'd need to get on that bike. they do look very similar to their CD finish but, from what i read, the surface should last longer.
i'm intrigued as to why they'd be worse in extreme wet weather. do they hold water to the surface?
Hey mig, I know this is like 5 years ago but do you still have your T217 Ceramics? I’m actually looking for a pair if you want to sell them? Cheers
they've just been built into wheels during the lockdown period and are in use now sorry. sometimes the do appear for sale though.
Re: ceramic rims
I have found that shimano S70c brake blocks work well with my Exal SP19 ceramic rims. no noise ( in the dry) and they even work reasonable in the wet after the rain has been removed from the rims. hint once it starts to rain start doing preparatory braking to stop water build up.
Ceramic rims dont work well in the rain as they are super smooth with no roughness that ordinary alloy rims wont have as they will sooner or later acquire a rough surface? If alloy was as hard as ceramic you would have the same problem - didnt steel rims have the same problem, poor wet stopping power, in their case due to a chromium coating over the nickel plating, some tried to get around this with lots of dimples on the surfaces?
Ceramic rims dont work well in the rain as they are super smooth with no roughness that ordinary alloy rims wont have as they will sooner or later acquire a rough surface? If alloy was as hard as ceramic you would have the same problem - didnt steel rims have the same problem, poor wet stopping power, in their case due to a chromium coating over the nickel plating, some tried to get around this with lots of dimples on the surfaces?