Google shoots you down. I was going to post this asking Ian or Dave if they've come across an engine layout similar to it in their Moto-info gallivanting.
It's a counter-rotating crank twin, the difference from the others I know of being that the cylinders in this layout would converge at the top to a single head with DOHCs. the purpose would be to eliminate any gyroscopic effects on a bike with a non-transverse.. or axial (if I may use that word again) crankshaft. And it'd be super torquey.
This is the closest I could find: Neander's turbo diesel with two cranks and two conn rods going to each piston. Queer. Thoughts?
Here is a side by side for the beginnings of a set of logos for my friend's potential land speed racing operation. None of this has been discussed with 'er, and I'd like to keep it that way for now. The name I arrived upon is "Gilded Demon" Land Speed Racing. I think it nicely blends a traditional speed-demon / hot rod devil reference with a novel pointer that the operation's more about the blonde rider than the 175 twin class (Bonneville attendees will note that there was a very small number of female racers) and of course some suggestive undertones of the she-devil variety. I know there's still a lot of shifting and ironing out to do with the text.. I suppose this could be considered my first typography experiment. Once I'm finished with the text it'll be set back behind the drawing, its just on top while I work on it. The shading on the demon and her bike is very preliminary. I'll also be simplifying the sketch parts of this and juicing up the linework for high visibility on shirts and stuff.