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Elitest thrill junkie
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So anyone ever see this?
https://photos.app.goo.gl/Lyx9nzpnAYnseqbf7

Its doing it in about 5 places on the rear non drive side.

This wheel about to explode? :eekster:

I am waiting to hear back from Reynolds....
Holy **** no, but that also may indicate sealant and air is making into the double-wall area, maybe through the valve-hole or under the tape, or it may just be leaking through the carbon, but that's some seriously porous/low density carbon with that kind of leakage, I wouldn't trust it on a ride, there's way to many air pockets in the carbon layup. I have carbon rims from 3 Chinese manufacturers and have never seen anything like that, even on 290gm weight weenie rims.
 

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There's no way that the rim is leaking that much air. Not possible.


Your taping is bad, or your valve stem has an issue, or... i don't know, i'm not familiar with that rim. Your tire pressure is getting between the rim walls at an absurd rate; like there's no rim tape. It's really unlikely it's the rim's fault.


This is almost certainly an end-user error of some sort. It happens!
 

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There's no way that the rim is leaking that much air. Not possible.

Your taping is bad, or your valve stem has an issue, or... i don't know, i'm not familiar with that rim. Your tire pressure is getting between the rim walls at an absurd rate; like there's no rim tape. It's really unlikely it's the rim's fault.

This is almost certainly an end-user error of some sort. It happens!
Did you even watch the video? It's literally leaking THROUGH the carbon lay up. The rim tape or valve may be leaking allowing sealant through the void. But a better tape job and more sealant isn't going to fix the fact that the goddamn sealant is capable of LITERALLY LEAKING THROUGH THE CARBON FIBER WEAVE.

OP, that carbon rim is as flimsy as a plywood board. Take that wheel off and get it warrantied. Someone must've skipped a few layers of carbon sheets in the Reynolds factory.
 

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EAT MORE GRIME
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leaking through the carbon

that rim is dead dead dead

carbon layup should be airtight, and even with voids, should be no way for material, air, liquids, anything to ingress and weep out the actual matrix


now that there is some substance inside the weave, it will perpetually start to unravel and creep and delaminate.

you can remove tire and clean up the rim retape and make it so no sealant leaks, but damage is already done. crap is inside the carbon. I'd junk that wheel asap
 

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Well going by the CushCore sticker and tons of sealant on the bead right about those 2 holes, I'm guessing you maybe cased a jump/drop hard, burped the tyre and have broken the rim. I certainly wouldn't be riding a rim that's leaking from the actual sidewall like that.
 

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Discussion Starter · #9 ·
Just an update - re-taped the rim and it makes no difference at all. Actually taped it twice as the first time i thought the valve stem opening was too large.
I called Reynolds and they will warranty the wheel, but it will be several weeks.

I did not take a big hit on it recently. I noticed this after my wheel would not seal after changing tires.
 

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Did you even watch the video? It's literally leaking THROUGH the carbon lay up. The rim tape or valve may be leaking allowing sealant through the void. But a better tape job and more sealant isn't going to fix the fact that the goddamn sealant is capable of LITERALLY LEAKING THROUGH THE CARBON FIBER WEAVE.

OP, that carbon rim is as flimsy as a plywood board. Take that wheel off and get it warrantied. Someone must've skipped a few layers of carbon sheets in the Reynolds factory.
LOL i didn't realize it was a video. Regardless, while there's no shortage of shoddy/damaged CF in the bicycle world, that part of the rim should not be pressurized. The fact that it is speaks to a second problem.
 

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Elitest thrill junkie
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This is why I've bought from the reputable Chinese manufacturers, the ones that make it for all sorts of other "companies", because they tend to know what they are doing and the quality is as good, or better than, any "high priced" carbon fiber rim IMO. Great that they are taking care of you. I agree there has to be something else happening here, possibly compromised structure. Unless they just didn't use enough resin, it seems like this would be hard to do in the manufacturing process.
 

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Discussion Starter · #12 ·
Well now Reynolds came back to me and told me its a problem with the tape. I've been taping wheels for years and never had this issue. For sure some air is getting past the tape, but it makes no sense that its not leaking from the spokes first! Also it only permeates from one side of rim which tells me its something more structural.
 

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Well now Reynolds came back to me and told me its a problem with the tape. I've been taping wheels for years and never had this issue. For sure some air is getting past the tape, but it makes no sense that its not leaking from the spokes first! Also it only permeates from one side of rim which tells me its something more structural.
What's with the backtracking? I thought Reynolds had a lifetime warranty. I've done a crappy tape job on a carbon rim before and sealant leaked through the spoke holes. You'd think the warranty department would know that sealant isn't supposed to leak from the carbon weave.

I always thought of Reynolds as a pretty good brand that made quality products and stood by them. But now, not so much. This rim is probably a fluke that missed QC, but they should absolutely cover this under warranty. I swear, sometimes, it's like pulling teeth getting warranty replacements.

If Reynolds doesn't replace it under warranty, I'd go public with your issue. Facebook, Instagram, Twitter, etc. Tag them. Put up some reviews. Call them out. Make sure others see. Force their hand to replace their clearly defective product. Sometimes, that's the only way to get companies to do what's right. And it's sad.
 

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It does look as though the rim itself has lost integrity. It's damaged, there are gaps in the layup/lack of resin. It's very likely that it's structurally unsound. Stop riding on it, if you haven't already.
 

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Doesn't matter if no tape at all, rim should not be leaking air/sealant from the sides, something is wrong with the carbon, stop riding it and tell Reynolds to replace that POS.

Well now Reynolds came back to me and told me its a problem with the tape. I've been taping wheels for years and never had this issue. For sure some air is getting past the tape, but it makes no sense that its not leaking from the spokes first! Also it only permeates from one side of rim which tells me its something more structural.
 

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Elitest thrill junkie
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Send them a letter asking them to sign a statement that it is normal for this to happen.
 

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Discussion Starter · #18 ·
The response from them today was "Yes, I have seen this before. The rims are not designed to hold air. The rims are hollow. The Rim tape and sealant should stop air at the tape area. It must be leaking past tape pretty bad, to be doing that. Clean rim well, retape, and use Stan's sealant."

REALLY??????

Here is a quick vid showing the tape... trust me its a lot better than what it came with. https://photos.app.goo.gl/c1oK8hcknXZ4C4nW9
 

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EAT MORE GRIME
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The excuses for this rim do not hold up.

scenario: you bring bike out in winter and get a little snow on the wheel.
bike is warm, snow melts, water seeps into that rim a tiny bit since it is not well made

now you keep riding, wheel cools to below freezing, whatever little water in that rim freezes expands and micro cracks the wheel.

repeat

it is absolute horses**t they do not think that rim is defective. carbon layup properly made with resin will allow ZERO fluids to ingress and pass through. that things has voids obviously. unless your video is CGI
 
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