If X propeller at Y rpm produces Z # thrust, then we could all post our observations/measurements with various props. Because these thrust measurements should be repeatable, people wouldn't need a "thrust calculator" program. They could just take their tach readings and compare it to postings on here of the same prop/rpm and it should give them thrust estimates. It wouldn't matter what type or size of engine turned these readings as rpm's are rpm's.

This would be a continuous listing of thrust produced by members' engine/prop combos. Of course HONESTY would be the main ingredient. [X(]

OK, I'll post some #'s. These thrust figures are from a search of this website and are actual "fishing scale" measurements. No thrust calculator #'s here.

APC
18 - 8 @ 7000 = 10#
8700 = 11.5#
17 - 6 @ 9000 = 12.5#
18 - 6W @ 9400 = 19.1#

MA
13 - 6 @ 9500 = 7+#
18 - 6 @ 8100 = 13.8#
20 - 8WScim@6900 = 15#

Mejzlik
18 - 6 @ 9000 = 17.5#

Zinger
18 - 6 @ 7900 = 14.25#
18-8pro @ 8500 = 17#
18 - 10 @ 7100 = 15.5#
22 - 10 @ 7000 = 28#