NP propellor vs Wirlwind

[redbowen]

I did. So here are some interesting numbers. It weighs 8.576 Lbs less than the Whirl Wind GA 200 72." The static pull with the Whirl wind set at a static RPM of 2400 was 400 lbs, the NR prop was 485 lbs at the same RPM. I will fly it more on Tuesday and report back with better cruise and fuel burn numbers, but I saw maybe a 2-3 mph drop in cruise speed. Climbs crazy good and brakes real good at idle in a decent.

[Shadowrider]

Cool thanks for the numbers. How are you doing static thrust test? What scale and where are you attaching at?
I plan to move my plane coming up soon to the airport and I am going to do some full power runs and want to do some static test.

[redbowen]

It is a pull scale attached to the ground and then to the airplane with a tow strap. It would be great to get a comparison chart together with the different engines and prop combinations to see how much each pulls.

[littlecricket]

Any updates on the NR props comparison? Looking at the 107.

[Shadowrider]

For the money the NR prop pulls the hardest. Trent went back to the NR because it pulls harder than the MT constant speed and weighs 35lbs less.