[shawn085]

I am looking for a saito 4 stroke that will fit in a 40-45 size plane. I like lots of power. The bigger the better. I have a friend putting a .90 saito in his. I don't want that big but what one puts out the best power for it's physical size? The .72?

[Jollidude]

The 72 is probably the best size for a 40 size aircraft, it weighs the same or less than a typical 46 size two stroke, puts out much more torque (for turning big efficient props) and sounds better to boot. I think the Saito 82 is about the same weigh too if you are a Tim Taylor type of guy. The plane would be definitely way over-powered with the 82.

Cheers!

Jollidude

[jake_027]

Well...if you are looking at a 3D plane like a Funtana, than I would go with the Saito .82. I know someone that has this setup and it works really well. It mainly depends on your flying style and the type of plane.

Dave

[Mike Biedul]

I agree with JilliDude and Dave. The Saito .82 is a great machine in a small package. In a .40 size plane you may want to consider a 3-blade prop to reduce diameter for gear clearance. I believe that if choosing between the Saito .72 and the .82, it is nice to detune the Saito .82 with a bigger prop with less pitch than you would use on the .72 and the .82 will run cooler and last longer. For the results a .72 gives with high nitro, you could get the same power from the .82 with milder (and less corrosive) fuel. Everyyone in my club that has an .82, including myself, likes it.