Thanks Ladyflyer.
I was trying to keep it simple and short for an apparent I.C. engine newbie.
Either he now has a much better understanding of our little engines or is totally confused!

Arjunchopra, are you thinking of putting a .60-.90 class engine in a .46 sized Free-Style aircraft?
Four strokers have a much different sound, rpm range, and tuning process. They are a little heavier than the equivalent sized two-stroke but offer a great amount of torque without having to really crank the Rs. In other words they can swing a much larger prop.


Jeff