Yep, the .91 four-strokes dominate SPA flying anyway, so worrying about a two-stroke engine is a moot point. I'd just like to be well enough to attend an SPA meet and fly now and then.

I have a Saito FA-91 and a Thunder Tiger .91 four-stroke that I would like to compare against the OS FS-91 Surpass Ixx engines running 30% nitro. I used to own the OS FS-91 Surpass II /pumped engines, but sold them off. They looked as though they were going to be too boring to be fun. You know OS four-strokes, they're very reliable (boring). I do have a Magnum clone of the OS FS-91 Surpass (II?), so there is a partial fall back position. Still, the lure of the old timey two-stroke engines is strong.

I still can't help but think that a really well set up OS .61 SF in a light model would have to equal the current stump pulling four-strokes.

Now you know why I never get anything done these days. I sit around in "analysis paralysis" most of the day.


Ed Cregger