Originally Posted by
BJ64
Ok... now you're really poking my interest....
A Moki 400 Radial... or a Kolm 3 cyl inline (e.g. Galloping Ghost).
Both magic beasts
I'll see if I can get some mock-up pics of where I'd like the 180 to sit in the BF 109.
...and you don't need big four-bangers to go seriously fast. This humble little Rotax 256 Twin 2-stroker flogged a fair few bikes (and V8's) in it's day...
BJ
This (FA-200Ti) would probably fit better than an FA-180 & makes the same or slightly better power comparing both with CDI..
Best of all, it is made to run inverted & the remote needle allows flexibility with the fuel tank location.
With CDI it uses 1 oz of 15% glow fuel per minute @ WOT. With GI it swills 12 oz of the same fuel in 7 minutes!