RE: Difference between 2-stroke and 4-stroke.
Saito's, Magnums, O.S.'s, etc.
I'm not talking about the sloberingly rich glow fuel consuming mis-tuned engines either.
I consider my Saito's "sippers" once they are properly tuned, compared to my larger Magnum's or even my OS four strokers of equal size.
Of course if I don't get at least eight flights a day on a particularly day, I've hauled out to the airfield, then it's a bad day!
As one person so humourosly put it.
"Isn't it aweful? All that glow fuel sitting in the jug, so sad. "
I'm not knocking four strokers. I think they are great, and thus far VERY reliable...
But two strokers also work fine particularly within the .40 - .90 sized plane range.
I'll also futher add, that on my Skybolts, a Tower Hobbies .75 2 stroker outperforms my O.S. FS .91 on an identical plane, and they both consume an almost identical amount of fuel on equally timed runs.