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 Post subject: BOOM!!!
PostPosted: Sun Mar 08, 2015 5:14 am 
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big hucker
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Location: Dallas, TX
I was mounting some brand new tires on a just-built wheelset. I wasn't getting enough airflow through the stem to get the bead to seat. So, I turned up the air compressor (quite a bit). Still not getting enough air flow. I remove the valve core and shoot a short burst of air into the tire and it seated. Yay!

Add 4 ounces of homebrew (I use extra on a brand new tire), re-install the valve core, push the air compressor fitting onto the stem.

Did I mention that I turned the air compressor back down? No? That's because I forgot to turn the air compressor back down. :oops:

The tire inflates in a moment and goes BOOM!!! :scared-yipes:

Tire blew completely off the rim and 4oz of sealant gets sprayed in a full 360* blast pattern. My wife came running out to the garage and asked "What was that!!!" After I explained what happened, she said "That scared me." I replied, "I think I just pissed myself." :lol:

Tire was fine. I remounted it, refilled it with sealant, and re-inflated it with the proper air pressure...

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 Post subject: Re: BOOM!!!
PostPosted: Sun Mar 08, 2015 6:11 am 
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timid kitty
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Sorry for your little mishap, but that's some funny shit right there
:doh: --> :lol:


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 Post subject: Re: BOOM!!!
PostPosted: Sun Mar 08, 2015 11:18 am 
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bad kitty!
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How's the cleaning going? ;)

Magura :)

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 Post subject: Re: BOOM!!!
PostPosted: Sun Mar 08, 2015 3:36 pm 
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big hucker
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Shoes were already ruined (was wearing my "garage shoes"). Surprisingly, my jeans came out of the wash nice and clean. :)

I wiped up the bulk of the mess quickly. Not too worried about miscellaneous splatters in the garage. ;)

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 Post subject: Re: BOOM!!!
PostPosted: Sun Mar 08, 2015 3:38 pm 
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pussy
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... and you did not take pictures of the carnage? Glad to hear that you are ok. I once had a tire blow off a rim, without sealant, and it scared the dickens out of me! :lol:


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 Post subject: Re: BOOM!!!
PostPosted: Sun Mar 08, 2015 5:52 pm 
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impatient kitty
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How many psi caused the boom?


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 Post subject: Re: BOOM!!!
PostPosted: Sun Mar 08, 2015 6:56 pm 
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big hucker
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Wishful Tomcat wrote:
How many psi caused the boom?

Unknown. I believe the gauge on my compressor is untrustworthy. I'm guessing it was over 40psi. I had it cranked open pretty wide trying to get the bead to seat.

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 Post subject: Re: BOOM!!!
PostPosted: Mon Mar 09, 2015 5:21 am 
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lil' hucker

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marpilli wrote:
Wishful Tomcat wrote:
How many psi caused the boom?

Unknown. I believe the gauge on my compressor is untrustworthy. I'm guessing it was over 40psi. I had it cranked open pretty wide trying to get the bead to seat.


I have a question regarding tubeless setups, and you seem to have plenty experience in that area. Plus reading your OP reminded me about this.
When you are mounting a new tire tubeless, if you pre-paint the inside of that tire with something like brush-on rubber glue, or some other flexible adhesive, does it decreade the amount of seepage through the tire significantly, or totally, or not at all?

If it does work, wouldn't you be able to avoid a significant amount of rotational weight gain for the bike?

I'm still living in the 60's, still using tubes. Only, I add a syringe or two of Stan's to the tube.

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 Post subject: Re: BOOM!!!
PostPosted: Mon Mar 09, 2015 10:27 am 
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bad kitty!
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You can paint the inside of the tire with liquid latex if a tire is seeping like mad.
Painting the outer edges in the same way, makes non-tubeless tires seal as well.

Magura :)

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 Post subject: Re: BOOM!!!
PostPosted: Tue Mar 10, 2015 10:43 pm 
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big hucker
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Ray Dolor wrote:
I have a question regarding tubeless setups, and you seem to have plenty experience in that area. Plus reading your OP reminded me about this.
When you are mounting a new tire tubeless, if you pre-paint the inside of that tire with something like brush-on rubber glue, or some other flexible adhesive, does it decreade the amount of seepage through the tire significantly, or totally, or not at all?

If it does work, wouldn't you be able to avoid a significant amount of rotational weight gain for the bike?

I'm still living in the 60's, still using tubes. Only, I add a syringe or two of Stan's to the tube.

The homebrew mix I use does have latex as one of the three ingredients (viewtopic.php?f=12&t=316&hilit=homebrew&start=60#p12915) and has done a good job of sealing the sidewalls on tires I've used.

However, Flyin_W has had great luck using rubber cement to coat the sidewalls and bead to help the tire seal up (viewtopic.php?f=12&t=316&p=6900&hilit=rubber+cement#p6900).

Sti mixed up a "new tire installation mix" (viewtopic.php?f=12&t=316&p=25460&hilit=homebrew#p25296) containing only latex and the RV antifreeze. Not sure if he's used it or how well it worked. :)

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 Post subject: Re: BOOM!!!
PostPosted: Tue Mar 10, 2015 11:57 pm 
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pussy
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marpilli wrote:
Sti mixed up a "new tire installation mix" (viewtopic.php?f=12&t=316&p=25460&hilit=homebrew#p25296) containing only latex and the RV antifreeze. Not sure if he's used it or how well it worked. :)


It works quite fine. Pour 2oz of "white soup", shake'n'bake, later add 2-3oz of "green soup", shred the gnar. :ugeek:


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 Post subject: Re: BOOM!!!
PostPosted: Wed Mar 11, 2015 2:11 am 
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yappin' kitty
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Marps, I've done that before, too--scared the crap outta me!

It resulted in a misshapen tire bead unusable for any future tubeless use--it mounted fine with tubes. Be glad your tire is still useful!

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 Post subject: Re: BOOM!!!
PostPosted: Tue Apr 07, 2015 12:01 am 
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yappin' kitty
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So, I guess this was the tire that wouldn't seat right on your maiden voyage?

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 Post subject: Re: BOOM!!!
PostPosted: Tue Apr 07, 2015 1:28 am 
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big hucker
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Sslikesnake wrote:
So, I guess this was the tire that wouldn't seat right on your maiden voyage?

I'm inclined to say "yes". Rear tire won't hold air and the front doesn't loose a pound. :)

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 Post subject: Re: BOOM!!!
PostPosted: Tue Apr 07, 2015 2:01 am 
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yappin' kitty
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The one tire I blew off the rim never sat right on a bead tubeless again.

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