Maybe I repeat myself
Maybe I repeat myself
anyway - when I got into electric motor powered models -- I built a small stand -which measured thrust -in ounces and grams
(Someone now markets an exact copy of that stand!)
anyway - I used a WHattmeter in series with my motor /controller / battery- This setup gave me static thrust and power required to develop that thrust
Both measurements in very exacting numbers .
What was strange -- was that the prop used seemed very meaningless .
IF--the power consumed was 5 watts then the thrust measured was 10 ounces. (for example)
changing the prop to a different pitch or diameter or number of blades , gave almost the same results!
Power consumed and thrust produced were very consistant
As I tried other combos and power settings - the same results occured
Tho there is a difference in efficiency on all combos- --that difference was small - I tried the same thing on my gassers (50-80cc) and found - the results were somewhat the same in that as long as I propped for the same rpm results - on the ground and in the air ( my engines have stored rpm readouts) the speed and climb results were very similar.
I whack and reshape my props to check for best results and so far the results as described - carry through.