Is that a rigid? I cant tell if there is a rear spring there or not.

I see your 6 and raise you a V8
http://g.photos.cx/1215752024863-e2.jpg
1957 Moto Guzzi V8 Grand Prix motorcycle, 500cc DOHC V8 with a separate carburetor for each cylinder, recorded at 172 mph in 1957.
Not a succesful racing bike though, several riders refused to ride it.
Great in straights, pretty bad in twisty bits.:idk:

its mono-shocked



i see your 8 and raise u 12!
http://www.youtube.com/watch?v=0F44AfVSm2U

I want to see that frame without the engine in it... I'm sure they had to do a lot of bracing to keep that bitch from folding like a pretzel... Either way, that thing doesn't look safe at all... I like it.