What size model are you planing to fly with this engine?
The engine works with any 9, 10 or 10.5 prop with 4" to 6" pitch
The ultimate performance you will get with an APC 10.5x4.5, optional 7.0mm venturi, 10/25 fuel in 2-2-2
In a Profile model you may suffer from fuel foaming in high rpm settings.
A friend of mine got his running with a 10x6 prop in a descent 4-2-4 with 0 Nitro 25% Oil
Martin
MANY THANKS Kameraden , comrades, for all your Input
.
This Enya (allmost new 45 Min's.) will jump into my SIG ARF Primary Force, my new building project
.
To prevent fuel foaming my
(adjustable. 4oz uniflow front feed)
metal tank has a thin (4mm) layer self adhesive black foam rubber at the side wall to face the fuse.
For "easy changing" engine
I will dadopt from my ex
Brodak Cardinal the engine mounting System (clamps)
.
My engine choice
,OS FP 25 NIB, Brodak .40 (45 Min's.), Tom Dixon OS LA 40 (30 Min's.)
All the best
Peter