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trader_4 trader_4 is offline
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Default Clare, Xeno.... did you ever have a batch of tires that justwouldn't seal after the final bead?

On Saturday, September 7, 2019 at 1:28:31 AM UTC-4, Clare Snyder wrote:
On Sat, 7 Sep 2019 14:19:11 +1000, Xeno
wrote:

On 7/9/19 12:14 pm, Clare Snyder wrote:
On Sat, 7 Sep 2019 08:55:40 +1000, Xeno
wrote:

On 7/9/19 2:27 am, Mark Olson wrote:
In rec.autos.tech AMuzi wrote:
On 9/6/2019 12:52 AM, Xeno wrote:
On 6/9/19 3:46 pm, Arlen G. Holder wrote:
On Fri, 6 Sep 2019 14:17:47 +1000, Xeno wrote:

That looks like a neat piece of kit! Simple and safe too.
Win win.

Even with the strap, and the bazooka in the background,
these guys opted for the flames!
https://youtu.be/lsnf3Zj0Vb8?t=214

With the flame you have little if any control.



What ever could go wrong?


https://ktla.com/2019/05/15/worker-d...f-los-angeles/

No mention in that article of using a flammable liquid or vapor to
seat the bead explosively.

Tyres have the potential to *create their own* flammable gas inside the
tyre. It is why those truck tyres explode and why an inert gas
(nitrogen) is used to fill them.

No - neither statement is true. Tire "explosions" on the road do NOT
include deflagration - any fire is due to overheated rubber bursting
into flame long after it has lost inflation.


They do on haul trucks. That's why the large mining companies here have
a tyre company under contract to do all tyre maintenance work.


OK - you are talking Pyrolysis - the same process used to form "wood
gas" - which again ONLY happens on an OVERHEATED tire - due to either
extreme overlood or low tire pressure (same thing, actually- as a
tire's load rating decreases with lower pressure) The tire must reach
about 200C - or roughly 400F for pyrolysis to occur. And nitrogen
fill will not prevent a pyrolysis explosion because you can never
keep ALL oxygen out of the tire.


You don't have to keep all oxygen out of any environment like that
to make it so that it can't explode. Below a certain oxygen fuel
mix, it can't explode. It's like trying to fire an engine cylinder
with a fuel/air mix that is too far off.




It may reduce the risk, but the
PRIMARY reason for nitrogen fill is pressure regulation - Nitrogen
molecules are larger and less likely to migrate out of the tire - thus
holding pressure better


Actually I think the primary reason for using nitrogen in most applications,
eg car/SUV tires is to put $$$ into the tire installers pockets.
Most places charge extra, many ridiculous amounts.