I must have received a copy of your E-mail from O.S.!!!

Yeah they told me the same thing.

On mine I had to prop it down to a MA 14x6 to get best RPM's ( around 9400 ) and pulling power.

When I tried an MA 15x6 the engine would load down too much in the verticals.

While a wider prop would have been nicer, I'm QUITE happy with the pulling power for the Skybolt.