FP OS 40

[bob whitney]

  i have a chance to pick up a NJB FP 40 wih U/C venturi  will it make a good stunt engine??

[peabody]

Hi Bob
You'll get lots of answers ....
Randy used to make a BC sleeve set up that yields a terrific stunt run.
Stock, you have to run the fast and not overload ......a "magic" prop is an APC 10 1/2 X 4 1/2
Have fun

[RknRusty]

I use the magic APC prop Peabody mentions with an Eric Rule tongue muffler tapped for pressure and Enya #3 plug. Contrary to what I've read, it will run a very timely 2-4 break. I believe my venturi is .257". Mine is one of the later production ABN engines and I fly it in my 45 ounce Oriental. I like it a lot. BTW, my prop/muffler/plug setup was recommended to me by the Philly Fliers. I always pay attention when they offer advice.
Rusty