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#41 · (Edited)
Before you pull the tape, just try setting the valve in one more time.
With the tire off, slide the valve into the hole. Put the o-ring (which is NOT there to seal ANYTHING. It's just there to prevent scratching the rim at the nut) and the nut on the valve where it comes out of the rim. Tighten them down.

Now, on the inner (concave) side of the rim, you can see where the rubber part of the valve is seated IN THE HOLE. THIS is where the valve seals - NOT ON THE OUTSIDE WITH THE O-RING. nothing seals the spokes where they come out.
Push HARD on the valve, from the inside (concave) as though you are trying to REALLY seat the valve. While doing that, continue to tighten the nut over the o-ring. If it still leaks after that, it probably needs to be retaped. But I'd suggest trying this first, just in case it and not the tape, is the problem.

Here's a video on taping.
Installing the valve starts at time 5:50 or so. The process of pushing down on the valve is at time 6:37.

The entire video is worth a watch to get a sense of how this process works.

How to Setup Tubeless Tires
 
#42 ·
Bottom line is that you most likely need to re-tape it. The tape seems compromised and sh!t happens.

You could try to tube it overnight to hopefully get a good seal with the tape, but...

Add an appropriate amount of sealant, air up and ride. You might get lucky. Either way, it's not a big task and you'll gain some more experience.
 
#46 ·
GarethTrek said:
View attachment 2148910
I’ve tightened the nut quite a lot to get a good seal, but the guy on my LBS said it should only be finger tight.
Click to expand...
Yes, it should only be finger tight.
But, if you press down on it while tightening, it will be tighter. There's no need to use pliers to tighten it down.
Finger tight for Arnold Schwarzenegger will be quite different than finger tight for me.
 
Discussion starter · #49 ·
Unfortunately not, I had that nut quite tight as you can see in the pic! Probably well past where I should have gone. Back to tubes for now, until I can pick up some replacement tape.

It is really frustrating as the tape looks really good. I was tempted to put sealant in to see if that seals it up, but then thought about the mess I could be in if the air is forcing the sealant out! 😂
 
#50 ·
GarethTrek said:
Unfortunately not, I had that nut quite tight as you can see in the pic! Probably well past where I should have gone. Back to tubes for now, until I can pick up some replacement tape.

It is really frustrating as the tape looks really good. I was tempted to put sealant in to see if that seals it up, but then thought about the mess I could be in if the air is forcing the sealant out! 😂
Click to expand...
Oh, it's crazy how annoying and frustrating these sorts of first world problems are! (And I'm not being sarcastic. They really are!)
 
#51 ·
MSU Alum said:
Oh, it's crazy how annoying and frustrating these sorts of first world problems are! (And I'm not being sarcastic. They really are!)
Click to expand...
Tubeless and tubed tires have the same cumulative pain per year. With tubes, the pain comes in small, regular doses as you fix flats. Replacing a tire only takes a couple minutes. With tubeless, you can go for long stretches without any flats. But when you do have a tubeless flat that won't seal or a tire needs replacement, you pay back all that missed pain in one huge dose.

Every time I install a tubeless tire i swear I'm going back to tubes. Then I go for 6 months without a flat and forget all about how it took 2 people and an air compressor to install the tire.
 
#52 ·
jeffbinco said:
Tubeless and tubed tires have the same cumulative pain per year. With tubes, the pain comes in small, regular doses as you fix flats. Replacing a tire only takes a couple minutes. With tubeless, you can go for long stretches without any flats. But when you do have a tubeless flat that won't seal or a tire needs replacement, you pay back all that missed pain in one huge dose.

Every time I install a tubeless tire i swear I'm going back to tubes. Then I go for 6 months without a flat and forget all about how it took 2 people and an air compressor to install the tire.
Click to expand...
When my son was younger, we rode Porcupine Rim. I think he flatted 4 times on that one fairly short section. We're in Utah and I haven't flatted in at least 10 years. Not a huge surprise on the Wasatch back - pretty buff trails. But we still ride several hundred miles per year in areas that kill tires. No way would either of us go back to tubes.
 
#53 ·
I think that I'm about 15 years tubeless. I'm comfortable with about everything tubeless. Going tubeless, it's like any skillset that you're trying to learn. Once you get it figured out and become familiar with what to expect and how to anticipate possible problems, things go much smoother.

There's good reason why tubeless has become mainstream.
 
#55 ·
Thinking sealant is going to fix a leak is challenging if you don't know what's leaking.
A conventional puncture, thorn or small rock is a probable bet with sealant.

Tape issues might or might not work. Prolly not. Sealant could exploit your tape's weakness.

I would consider removing valve stem, popping one side of a bead, inserting a tube and inflate to max rim specified pressure overnight (12 hours or more). This might or might not work. But, it might.
It has worked for some of my problem tape jobs.
YMMV
 
#56 ·
Slap some of the 'narrower' roll of Gorilla tape around the rim, some people will advise against this but ive had it work better than some 'brand name' tape, also the leaky side walls, my Sister had this issue with 2 brand new Specialized Roubaix (i think) tyres, it was leaking around the embossed lettering and would not seal with Stans sealant, Specialized warrantied them and gave her 2 new ones, all good now
 
Discussion starter · #59 ·
strange how I had air leaking through the spokes though. I tightened that valve up finger tight and OTT tight and the thing still kept hissing from the spokes. The valve must have been ok. I also tried the other two different rubber pieces that go on the valve stems but made no difference.

Image
 
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