Hey Slim..

You're really tapping this group for all it's worth hey? <GGG>

You're a good man Charlie Brown. Keep asking questions! There's more to learn than any person could gather in 5 lifetimes!

Here's a handy "rule of thumb" propeller load comparison formula that I've used for years....works well.

** Prop Diameter (in,cm) x 2 + Pitch (in,cm)

Example: A 10-6 prop would yield a load of:

10(2) + 6 = 26

an 11-4 prop would yield...

11(2) + 4 = 26.

Both props approximately load the engine the same (flight performance would be noticeably different).


It's a handy method of determining if you're increasing/decreasing the physical load on the engine.

Have fun!!!