You're having a laugh, aren't you?
Al
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!!
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

) 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

)