GreatOne,

In the beginning (quite a few years ago) I used Zingers and got those big rpm numbers with them. This was with the Brison. However I noticed there were flight speeds and attitudes where things just didn't seem right, especially at ultra slow speeds. This was my entry into propeller performance experiments.

Though a whole lot of trial and error I found that RPM wasn't the qualifier for an acceptable, good, or great prop. How the prop moved air and how the plane performed with different props was what qualified a good prop. The MSC was a great example. It never turned high RPM. In fact it was usually the lowest RPM count in the bunch. But the planes performed slow flight, climbs out of hover, and downline braking like never before. They "stuck" better in turns, and didn't break out of other maneuvers like they had before.

The results were generally consistent. None of the planes performed as well with Zingers as they did with other props. There's a lot more to how a prop works than how fast it spins. Try a little experimenting with actual performance while not predetermining a prop by RPM count and see for yourself.