Is it a radial or a rotary?!!!!

Most definitely a radial. A rotary is the Wangle (SP?) engine as in
the Mazda cars

True, however in the context of a radial engine, a rotary
is like a radial except that the crank is bolted to
the aeroplane/motorcycle and the cylinders to the
propeller/whatever. This seemed more exciting
in a motorbike and therefore surely more
desireable?

I suspect that rotary engines preceeded radials
and I am pretty sure that for example the WW1
Sopwith Camel used a rotary.


Googling has turned up what may be a rotary engined
motorbike from a while back (1920s).

http://www.absoluteastronomy.com/enc.../me/megola.htm
http://www.cybermotorcycle.com/euro/brands/megola.htm

Unfortunately it appears to be safely ensconsed
within the front wheel. Not very exciting?
Well, steering may prove to be exciting?