i have a question about engine rpms. using a fox 35 as the test engine, if you try various size props, i.e. a 10/6, a 10/4, an 11/4, a 9/6, and a 9/8, what changes in rpms would be expected? of course, rpms can be adjusted with the needle valve, but the different props should have different results. or do the rpms stay about the same? i am trying to slow down a stunt plane but maintain an engine speed that is reliable.
regards, marv (still uses fox 35s)