RE: Lanier F-4 Phantom
The YS-45 is one of the finest engines I have ever had (and I have had a few-)... Just make sure the tank is OK when the YS pressurizes it (some split-)
Also, the YS loves a pipe (Macs 7.5CC) or quiet pipe- It will be strong on the stock muffler but would be wasted on the F-4 without a pipe-
Mine simply runs beautifully... You can put the tank anywhere you want, way back, high, low etc..
Keep me posted
james