Exploding Winglets !

requirements; fuel + ignition + oxygen = bang!

Err - what? :eek:

Al :confused:

's true.
even then it can be difficult.
a "mate" :rolleyes: dropped a lit match in the tank of my Yam 100c.c. 'Jet Twin' when i was 17 :eek:
apart from a 'hsss!' noise from the match and a 'parp' noise from my aras....

a total of nothing happened :nenau
 
's true.
even then it can be difficult.
a "mate" :rolleyes: dropped a lit match in the tank of my Yam 100c.c. 'Jet Twin' when i was 17 :eek:
apart from a 'hsss!' noise from the match and a 'parp' noise from my aras....

a total of nothing happened :nenau

You're having a laugh, aren't you? :nenau

Al :augie
 
You're having a laugh, aren't you? :nenau

Al :augie

no. serious.
'Mythbusters' did a thing on the well worn movie scene - where the baddy drops a lit ciggie in a puddle of fuel and Woof! up it goes and endangers the hero :eek:

they had a hell of a time getting the feckin pool of fuel lit! :blast
 
You're having a laugh, aren't you? :nenau

Al :augie

It'll scare the poo out of you, but it's true.....it needs a source of ignition...heat isn't enough

I took my three or four day old lebbenfiddy adv to Rob to get some lights fitted.......he being the meister of ready made looms and so on......I was running late from my ex's house so we started working on it immediately , even though I'd been caning it to get to Loogaboroogah from Harborough.

Straight into his small, confined space garage, onto the centre stand, undid the side QD's and the tank release bolt, lift off full tank.....one each side....hmm, seems to be caught on something....tug.......

PISSSSSSSS!!!!!!!!!!!!!!!!!!!!!!

32 litres of 95 octane petrol start spraying allover the engine, zorst, floor, US.....

Minor panic ensues as we're standing on either side of the bike holding this dirty great heavy brand new tank of fuel between us over a brand new very hot bike and petrol's pissing all over the hot engine!!:eek:

Anyway, cut a long story short.....we managed to stem the flow (it was the first ADV Rob had seen and I'd only had it a few days so neither of us knew about the third pipe that connects the two lobes:blast) and got the tank down on a blanket....then we mopped up the pools of fuel and giggled a little bit at what we thought was a close escape....turns out though, petrol poured on a really hot 'zorst pipe will not go up........it just fizzes and makes your arse contract tighter than a frightened duck's!

(more scary was bumping into Rob that night on his landing, nearly nekked, but that's another story ;) )
 
The simplest analogy is the direct injection diesel engine (no glow plug)

You atomise diesel with a compression ratio of say 22:1 (to provide the heat and the mass of oxygen) and it ....................

burns ! :rob

Go figure................... :augie

Al ;)

Or - you could read: a wee bit more technical..................
 
(more scary was bumping into Rob that night on his landing, nearly nekked, but that's another story ;) )

Two grown blokes in their skiddies in the middle of the night on the landing pretending it's perfectly normal :D

Apart from the bollocking you received for missing valentines night that was a good night.
 
The simplest analogy is the direct injection diesel engine (no glow plug)

You atomise diesel with a compression ratio of say 22:1 (to provide the heat and the mass of oxygen) and it ....................

burns ! :rob

Go figure................... :augie

Al ;)

Or - you could read: a wee bit more technical..................


The point has been made that it is the vaporised fuel that burns , not the liquid droplets.Hence in the scenario above, the high compression ratio of the engine provides enough heat in the air charge ( usually >550C)to vaporise the fuel which is supplied highly atomised to increase its surface area and speed up evaporation. All that is required is that the air charge is above the auto ignition temp of diesel, and a sufficiently concentrated mix is achieved, for the fuel to ignite.

The auto ignition temp of gasoline is one of the limiting factors in how high a compression ratio can be run in a petrol engine. If the Compresson ratio is too high there is a serious risk of pre-ignition.

The table in the link shows the auto ignition temp of gasoline as 280C however very few external surfaces of the engine will have reached this temperature. One possible exception would be the exhaust headers but then in order for combustion to occur the lower explosive limit (LEL) must also be exceeded. Given that it was a forecourt and well ventilated this would significantly impede the development of a combustible mix.

Does'nt prevent that "oh S**t" moment though and the tightening of the sphincty!!

Petrol and diesel are only also rans when it comes to volatility compared to the average female !!!:augie
 


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