URGENT WARNING ON A TYRE INFLATION METHOD...
Submitted: Monday, Nov 15, 2010 at 15:48
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roberttbruce
This is an urgent warning on incendiary, or igniting gas/aerosol, as a method to
seat a tyre on a rims bead...
Somtimes the inner brass valve casing/sleeve fires from from the valve's rubber nipple...
***it fires with extreme velocity***
An example of the method is here...
Tyre reseating with Butane Gas
I have used this method many times
recently two (2) of the inner brass valve sleeves let go
i will not use this method lightly anymore
Reply By: equinox - Monday, Nov 15, 2010 at 16:06
Monday, Nov 15, 2010 at 16:06
Same link
HERE
Mick has stated in the first line of that blog that there is a risk involved. I was there at his third video and yes I was standing back a bit lol..
However I do take note of your mention of the brass valve sleeves and will remember that next time, thanks.....
Cheers
Alan
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Follow Up By: roberttbruce - Monday, Nov 15, 2010 at 16:16
Monday, Nov 15, 2010 at 16:16
i am in no way trying to detract the blog, as stated, ive used this method many times... sometimes even preferring it to going to the tyre
shop...
ive also seen this method a lot on the internet, utube etc....
nowhere did i find mention about the sleeve... it's lethal
so i thought i might mention it...
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Reply By: Member - Fred B (NT) - Monday, Nov 15, 2010 at 16:15
Monday, Nov 15, 2010 at 16:15
Did you have the valve itself removed?
regards
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Follow Up By: roberttbruce - Monday, Nov 15, 2010 at 16:19
Monday, Nov 15, 2010 at 16:19
yes Fred I did...
i even go as far as put my finger briefly on the valve stem as it sucks air back into the tyre, just to make sure the fire extinguishes
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Follow Up By: Robin Miller - Monday, Nov 15, 2010 at 16:23
Monday, Nov 15, 2010 at 16:23
Probably a good idea to throw a towel etc over the valve as
well.
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Follow Up By: roberttbruce - Monday, Nov 15, 2010 at 16:40
Monday, Nov 15, 2010 at 16:40
one would prefer something more substancial than a towel...
because of the inexactness of the metering the gas into the wheel, as
well as the type of gas, the closeness of the tyre on the rim etc etc... the methods's resultant ignitions vary greatly, very greatly...
Im sure sometimes the explosion
well exceeds the recommended 60lb, it could easily reach 100psi .... one of the risks in this stage is the danger of hidden torn steel bands on the tyre which quickly fail..
It only takes a projectile 40 psi to push a projectile into lethal, especially with everyone standing around and watching it...
anyway, im preaching to the converted, thanks anyway
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Follow Up By: Robin Miller - Monday, Nov 15, 2010 at 16:46
Monday, Nov 15, 2010 at 16:46
The towel is more than enough Robert - unless you read that as being for the whole tyre.
For your brass valve stem without valve , throwing a small towel , even a washer would dramatic reduce even further the likely hood that stem would be ejected dangerously.
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Follow Up By: Member - Fred B (NT) - Monday, Nov 15, 2010 at 16:50
Monday, Nov 15, 2010 at 16:50
Thanks for posting the thread Robert.
It is something we will all have to remember to watch out for in the future.
regards
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Follow Up By: roberttbruce - Monday, Nov 15, 2010 at 20:59
Monday, Nov 15, 2010 at 20:59
no worries Fred...
and yes Robin, a towel should reduce the likelyhood of harm on a lot of occasions...
i should have mentioned im running (fully engineered) 33x15's on 11inch rims... they are a little huge...
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Follow Up By: Member - Andrew L (QLD) - Wednesday, Nov 17, 2010 at 22:21
Wednesday, Nov 17, 2010 at 22:21
Robertbruce..what does "running (fully engineered) 33x15's on 11inch rims" really mean... can you get half engineered or what..?..is it the tyres or the rims you are referring to..?
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Reply By: Mick O - Monday, Nov 15, 2010 at 17:18
Monday, Nov 15, 2010 at 17:18
Thanks for the warning Robert. It’s not a problem I’ve encountered but one to be mindful of. I will update the blog with your findings as a warning as
well. As I’ve always maintained, this is not a method I endorse for everyday use. It’s simply a remedy for use in difficult or trying circumstances such as travel in remote areas out bush. There are too many variables that can cause an issue as the one you’ve just mentioned. I reckon I could get away with a lot less gas on some occasions but again, it’s a method I use sparingly and as a last resort.
I’m finding that the dual compressors and the big
tank enable me to reseat most tyres these days but there are still the stubborn ones and they’re usually the thick side walled tyres such as the toyos.
Thanks again.
Mick
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Follow Up By: roberttbruce - Monday, Nov 15, 2010 at 21:07
Monday, Nov 15, 2010 at 21:07
no worries MickO...
i've had a spate of flats and leakers, 5 in the last three months... all sorts of reasons including a shredding from wombat... luckily, and strangely all in the rear....
I lke your idea about throwing in the match.... i've been using the ever-scary "flame-thrower" method
I found Mortien surface spray works the best for a controlled burn...lol
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Reply By: Member - Christopher P (NSW) - Monday, Nov 15, 2010 at 18:20
Monday, Nov 15, 2010 at 18:20
Nice shooting Tex.
sorry for silly coment. As a sort of tyre fitter myself i understand where you are coming from. thank you for the warning, very much apprieciated.
a little tip, if you can pull the wheel off, drop the wheel/ rim from about 6 inches off ground witth compressor hooked up, what that does is pusshes tyre onto rim.
there a l;ittle tipps and tricks out there. some have better ones, but that works for me.
thanks again forthe warning.
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Follow Up By: Mick O - Monday, Nov 15, 2010 at 19:01
Monday, Nov 15, 2010 at 19:01
Cheers Chris, Yeah we've done that. Another tip in the tyre repair arsenal. John had a bit of trouble with a big Toyo (315/75-16 or similar) at Rudall River this year. Trouble was he started at 6" and then 12" and then 2 feet. I felt like I was watching a contestant in the worlds strongest man contest lol. It did
seat in the end. It's not something I would have been capable of due to old injuries.
Cheers Mick
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