Thursday, Jul 23, 2009 at 23:13
It is less dangerous than carrying petrol in a jerry and filling your
tank. You pour a max of one third of a cup from your jerry into a cup. Obviously you screw the cap back onto the jerry and move it
well away and you don't do this near a fire or with a ciggy in your mouth. This is no more dangerous than filling your motor mower or chain saw. Probably considerably safer in fact as you are using smaller quanities of liquid and wont be near a an engine that may still be hot. The technique is actually taught in some 4wd training courses. The speccy bang is a bit misleading and is caused by the rapid expansion of the gases sealing up the tyre and the resultant compression. It is nowhere near as dangerous as it sounds. The sealing up instantly extinguishes the petrol as it cuts off the oxygen
Mind you, using diesel is more dangerous for this purpose. There is some great footage around of some idiots trying to do this with diesel, which burns slowly rather than exploding and the lads watch their tyre literally going up in smoke.
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