Originally Posted by
desmobob900ss
Those SP models --actually, all the RCV engines-- sure are interesting! I'm sort of an engine nut and I bought a 91CD many years ago when I saw them at an R/C show. I ran it on the test stand and broke it in but never ended up mounting it in an airplane. It was a little bit lower on power than my Saito .91 but I didn't buy it based on power. Someday...
Thanks for your details, yes interesting engines. I know this is an old thread but hopefully someone may know the details to my questions.