Hi guys,
I'm picking up a H9 p-51 "Marie" http://www.hangar-9.com/Products/Def...ProdId=HAN2375and want to stay with an OS 2 stroke. The specs say.61 - 1.00 (2-stroke), .72 - 1.00 (4-stroke)
But when I look at the new Blue nose P-51 the specs say
.60–1.20 (2-stroke), .91–1.25 (4-stroke), 20cc gas
The two planes don't seem that different so I was thinking of using an OS 75AX or OS 1.20AX 2 stroke. Will the 75 be enough or will the 1.20 be to much and to heavy? I like to fly at full throttle at times but also enjoy 1/4 to 1/2 throttle flying as well.
I would ratherNOT cut the cowl for the engine and pitts style exhaust is that possible?

How long has the Marie version been around?

Thanks