"B S D Chapman" mail-at-benchapman-dot-co-dot-uk wrote in message
news
That's a bit of a laugh though, isn't it?
8 seconds was the book figure, but you'd be bloody lucky to last that
long!

That's because there's so much dihedral on the wings
all the fuel runs downhill to the upper tanks when you're
inverted, so you only have what's in the fuel lines!

Paul