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Tubeless - loss of pressure


gerhardsnorbaard

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Posted

5 - here comes the tricky - have valve core ready, and as you remove the pump and the air starts to escape, plug with finger. Then remove finger and quickly put valve core back. Repeat this step until tyre stays inflated.

 

Make sure you have a very good grip on the core.  I did 7 tubeless conversions the past weekend, and on the last one, due to cold hands and tiredness at 19H00 still working on the tubeless conversions, I slipped up and the core took off in the stream of air.  Was no fun looking for the core in a woodworking workshop.

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Posted

Well here's my thing, when I deflated the tyre, it cake away from the rim without me even attempting to unseat it. I was going to simply add sealant through the cable but not possible as the tyre came away from rim

 

It was not seated so had to get to petrol station and pump it up with sealant already in as I am sure they do not seat to the point where you have to really work hard to unseat them.

 

So now everyone I want to top up sealent I jave to seat again. They are not tubless specific rims/ryres so maybe that's the issue but they work flawless when pumped up with sealant, no issues.

Posted

Well here's my thing, when I deflated the tyre, it cake away from the rim without me even attempting to unseat it. I was going to simply add sealant through the cable but not possible as the tyre came away from rim

 

It was not seated so had to get to petrol station and pump it up with sealant already in as I am sure they do not seat to the point where you have to really work hard to unseat them.

 

So now everyone I want to top up sealent I jave to seat again. They are not tubless specific rims/ryres so maybe that's the issue but they work flawless when pumped up with sealant, no issues.

 

I had the same problem with the tyres on my youngest son's bike.  If you pray, and the planets line up, you can get them to seat on the AlexRims.  Eventually last week I gave in when I saw the rims was pulling apart at the weld, so I bought a Hope Pro 4/Crest wheelset at CWC. They had the set on special at R6995, so I just knew the universe was trying to get a message to me.  Now I have bliss.

Posted

Its easy to seat tyre with garage pump - no adapter needed, just valve core remover. How i seat new and existing setups:

 

1 - remove valve core

2- inflate the dry tyre with garage pump, until you hear tyre pop on bead

3 - Let tyre deflate again (inevitable), then add sealant with small bottle / syringe through valve core

4 - inflate with pump again, making sure valve sits at 9 o clock or higher

5 - here comes the tricky - have valve core ready, and as you remove the pump and the air starts to escape, plug with finger. Then remove finger and quickly put valve core back. Repeat this step until tyre stays inflated.

6 - pump to 2.8 bar max, bounce tyre around and take for a ride around block

7 - deflate to normal running psi and bobs your uncle

This explains my process exactly - except I'm lucky enough to have a compressor at home.

Posted

Benzine is the best thing to use to get the old glue and residue off.

The best is Holts tar remover in the aerosol tin. Trust me, it is the farking best, benzine/meths/thinners/isopropyl alcohol nothing comes close, removes Tar and glue like nothing else. Ok well you also get Wurth Glue remover but it's like 3 times the price...
Posted

The best is Holts tar remover in the aerosol tin. Trust me, it is the farking best, benzine/meths/thinners/isopropyl alcohol nothing comes close, removes Tar and glue like nothing else. Ok well you also get Wurth Glue remover but it's like 3 times the price...

Thanks for this. I'm getting this today!

Posted

Some rims are just near impossible to get the tyre to seat without a compressor.

With some rim and tire combos there's too much of a gap between the rim channel and the tire bead. I just stick on another layer of duck/gorilla tape to tighten it up.

Posted

Thanks for this. I'm getting this today!

This is what it looks like, this is the only version that takes off glue like a boss, all the other tar removers are useless on glue. The other special thing about it is despite being so effective it doesn't damage paint or plastics. Highly recommended!

 

e165b8ae2b87f5e84c947c7c289b7875.jpg

 

Costs around R50-60 a tin at Midas, if you ask nicely they will often further discount the price.

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