RE: satio 100
Expo,
Sounds like the 15 x 4W is a good choice for the engine. Will give it a go on mine. From your post I take it that your Saito doesn't seem to suffer from the syphoning effect caused by the carb being below the center tank level. Might try this engine in a Top Flite Spit I am having syphoning trouble with an ASP .91FS I have fitted.