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How long does the CD/Cermanic coating last on Open Pro rims?

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How long does the CD/Cermanic coating last on Open Pro rims?

Old 01-15-07, 11:41 AM
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shapelike
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How long does the CD/Cermanic coating last on Open Pro rims?

I'm considering building up a set of these. Performance claims aside, do either of these coatings last for any decent length of time? I'm planning on using them for cyclocross, but I'll probably skip the fancy Open Pros if they're just going to be half worn through in places after 2 months.
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Old 01-15-07, 12:02 PM
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I use them on my road bike and never had any problems with them wearing through. I've got upwards of 20,000 miles on them.
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Old 01-15-07, 01:12 PM
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See, that's what I don't get. I've read others claim that any wet grit will wear the coatings off in ~20 miles. Do you have the CDs or the CD Ceramics?
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Old 01-16-07, 09:01 AM
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"CD" is mavics term for surface hardening the rim. Anodising is a form of surface hardening and probably what CD means.
Ceramic is a process where ceramic is bonded to the rim. It is pretty tough and can stand thousands of miles of braking with no wear, but you can crack it if you hit the rim hard enough.
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Old 01-17-07, 01:24 AM
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My are the CD Ceramics and as I said above I've never had a problem with the ceramic wearing through. I ride all winter with them and they get a lot of grit. Mavic made them for extra stopping power in wet weather.
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Old 01-17-07, 02:23 AM
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I have a set of the CD (non ceramic) anodized OPs.

The coating holds up pretty well but does start to wear off eventually. Braking performance in wet conditions is not as good as the naked OP rims which would argue against them for CX IMO. They are slicker. It seems to take just a wee bit longer for the brakes to bite in the wet.

The main advantage to the CD coating is longer braking surface life. You have to wear through the coating before you start wearing through the Alu. The anodization also seems to keep the rim cleaner - not as much crud sticks to them. They are much easier to keep clean compared to the std OPs. They also just look nice to me.

The front rim coating is worn off almost completely after a Year of riding. The back rim coating is worn in places.
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Old 01-17-07, 09:50 PM
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If the coating only lasts a year, I wouldn't consider them worth it. Thanks for the input though ... from this post and another I've made it seems people have gone either way with these rims.
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Old 01-17-07, 10:11 PM
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You seem to be misunderstanding.
The rim that has "ceramic" in the name is a wet weather rim that is very wear resistant and should last thousands of miles.(I have enver seen one worn thru but I have seen the ceramic crack in a blow out/crash.)
The rim that just has "CD" on it is a hard surfaced rim that offers increased finish durability but depending on use the finish will wear thru.
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Old 01-18-07, 05:46 AM
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I should perhaps clarify that the anodization has started to wear off only on the braking surface. Everywhere else it is as new.

The time saved in keeping the wheels clean is substantial. They are worth considering if you ride in grimy conditions. They'll look a whole lot better after a Year of riding than the std. rims will.

Some people have reported cracking at the spoke nipples on the anodized rims. I have not had that problem. This may have something to do with my being a light rider <150lb. - and spoke tension.

And just to re-iterate: there really is no overall performance advantage to these rims that I can comment on. In fact under some conditions - extreme wet/standing water - there is a braking deficit that can be a bit heart stopping until you learn to compensate. Definitely not the sort of thing you'd want happening while participating in CX. OTOH, the braking is such that, under street conditions, you don't get more brake than you bargained for which can be a good thing when road conditions are slick. You takes your pick.

It's all about some extra rim life, ease of maintenance, and aesthetics.

They have a very French book bag Blue Grey look to them that depending on the bike they are on is very appealing if you like that sort of thing.
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Old 01-19-07, 12:59 PM
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Rev.Chuck, I got what you and others were saying - I think we're just confusing/misreading the different versions of the rim. I was asking about both, but it seemed early on that the CDs weren't "all that" unless you were thinking looks. If the CD Ceramics were up to the task of cx racing in foul conditions and durable I'd be all for them. I've seen some of the Open Pro rims in the past with some sort of coating (not sure which model) and they were all worn through on the braking surface where each spoke went through. It looks pretty nasty, so I didn't want to pay for a product that turned into that after a few months of heavy use.
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