Engine choice for the Intruder...

Chris,

I flew my Intruder with the OS .61 FX and the stock muffler. The APC was the best prop based on a half a dozen different props Dave Guerin and I tried. The model was adequately powered to fly but did not have a vry impressive vertical. I did not have a tail heavy situation and actually added 1 ounce of lead stick-on to the tail.

I added a Mac's pipe and well...much better! The airplane came to life and could do really big stuff like my Calypso and the Blue Angel.

The .90 has a very different power curve and is easier to fly than the narrow band offered by a piped .60/.61. Photo is of young master Wingo landing.

Rusty Dose
Team Futaba