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Old 03-01-2015, 09:46 PM   #1
Country Doc OP
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Can't seat the bead with a bib mousse!

Officially frustrated with this problem.

My first mousse was a Michelin front rally mousse which is so ridiculously large and tight fitting that the bead seated immediately, but the tire feels like it has at least 25 psi in it!

My next two have been rears and I can't get them to seat. Both Mefo 18-1s, one with a Motoz tractionator and the other with Mefo stonemaster. They feel nice and compliant and low pressure (ie feels like 13 psi or so)....but I can't seat the beads. Tried lube. Bouncing. Blasting air in the tire valve hole (eventually it just leaks out around the spokes). Tried riding with it for a while - rode the Mefo up and down the street today but it didn't get close to seating.

Even rode a whole enduro on the Motoz. No dice. Still not seated on part of the bead.

What am I missing??

dc
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Old 03-02-2015, 03:17 AM   #2
GezwindeSpoed
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Weird, you tried most things I would have done. I heard of people gas it on a stand in highest gear to seat it. Never tried it and be careful. It helps when the tire is warm.
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Old 03-02-2015, 04:21 AM   #3
Grreatdog
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I returned a front Tractionator that absolutely would not seat. Even lubed and 100 psi in a warm basement wouldn't pop that tire on the rim. Dual Sport Armory swapped it for me and the next one went on no fuss. Maybe you got my return.

Seriously, though, there really was something wrong with the bead construction on that tire. It had me doubting my ability to change tires until I returned it for a different one. So maybe test it with a tube to make sure the tire actually fits.
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Old 03-02-2015, 04:32 AM   #4
Gimme 2
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You can fit a tube less valve stem and simply pump it. take the valve out of the stem, it's not needed.
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Old 03-02-2015, 07:07 PM   #5
Country Doc OP
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I cut the valve stem out of an old tube and used it without the valve core (in lieu of a tubeless rim insert, which would be better). Still no love.

frustrating!

dc
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Old 03-02-2015, 09:22 PM   #6
Beta450
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Spray a little starter fluid in the tire and stick a lighter to it. I have done it to quad tires when the dealer couldn't get the tire bead to set on the rim. I was taught this by a guy in a tire shop.
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Old 03-02-2015, 09:57 PM   #7
mpatch
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Quote:
Originally Posted by Beta450 View Post
Spray a little starter fluid in the tire and stick a lighter to it. I have done it to quad tires when the dealer couldn't get the tire bead to set on the rim. I was taught this by a guy in a tire shop.
That does work although I have never tried it on a MC tire. Remember if you do this when you light it keep your fingers away from the bead.
They also make a air cannon that I have used to seat beads on various tires.
Looks like this:


I have seem many homemade variations that do the same thing.
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Old Yesterday, 04:37 AM   #8
Rodknee
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Quote:
Originally Posted by Beta450 View Post
Spray a little starter fluid in the tire and stick a lighter to it.
i can only assume you do not know what a bib mousse is. it is a foam like replacement for the tube. ANY heat, and it will melt.
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Old Yesterday, 05:55 AM   #9
BigShooter
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I had considered trying out a bib; but, this is a problem I haven't considered. There might be something to it just being a tire problem. Is your compressor putting out a pretty good volume of air? I have tried to seat tubeless fourwheeler tires before with a pancake compressor I have, and the initial volume "blast" just didn't have enough umph, if you will.
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Old Yesterday, 07:36 AM   #10
Duken4evr
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I have one of these, it makes mounting tires so easy it is almost fun

It is a clever design, pushes the bead over and down very nicely. No need for tire irons at all when using a tube. Have never tried it with a mousse.

http://www.amazon.com/s/?ie=UTF8&key...l_2wtrchz786_e
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