I have a question? Why does everyone seems to think that four strokes swing larger props and have more power. When the fact is 4 strokes produce a lot less power than 2strokes of the same size, this is evident when you look at any kit for any r/c plane, you will see that the kit will recommend a certain size 2 stroke and a larger size 4 stroke. For example a .40-46 size airplane will recommend a .60-.72 size four stroke engine. Sure a .72 size four stroke will spin a larger prop than a .46 2 stoke but lets compare apples to apples. Like a OS 91 fx and a saito .91 , its "plane" to see that the os will not only swing a bigger prop but it will also turn it faster. Personally I think people spend all the extra money on 4-strokes for some kind of status thing, I think they are a waste of money, and time. Especially considering that they require maintenance such as adjusting valves. Another myth I hear people bragging about four stroke is that they sound so "good" and more "realistic" . BALONEY :devious: . No engine that has a displacement of + or - 1 cu in is going to sound any where close to a 200+ cu in engine. Well thats my 2 cents.

Michael