starting propeller pitch

[phintz]

Hello, I installed my 72" warp drive prop today, and I'm going to set the pitch tomorrow. What is approx. the starting pitch degree for intial testing, I'm looking for a in between # for cruise and climb!


Also for warp drive install, the 4 bolts for each blade, do you put the heads of the bolts forward or aft. Instructions didn't say, does it matter?


My engine is a rotax 912.


Thanks
Patrick Series 6 builder

[SkyPirate]

I have the bolt heads forward..582 I had around 11 degree's ..not sure what it is on my 912 for pitch

[HansLab]

Mine is 12 degrees @ 75% of the blade. (IVOProp, 912UL)

[phintz]

I called warp drive the other day and he suggested 14 degrees as a starting point, possible going to 15. I was wrong on the size too, mine is a 70 " radius. He also said that every degree added + will drop your static rpm 100 rev. since this is loading the prop more.

just thought I'd share

Thanks again
Patrick
series 6 builder

[Wheels]

I flew my model IV today with the 70'' three blade warp drive. the most I could get at WOT was 4800. I have a friend who offered his digital level but I don't have a pitch angle tool. Do I need one?
I guess I'll call Warpdrive for the torque values, but can anyone ballpark the numbers.

[Jerrytex]

I have the Warp protractor and a digital level. I only use the digital level anymore. You can get it dead on with a digital level.

Blade bolts- 120 inch lbs (10 Ft lbs)
Hub bolts- 175 inch lbs (15 Ft lbs)

[Wheels]

Thanx, I"ll start tonight and report how it goes, although its raining and the cowling is at the paint booth.
Wheels

[kitfoxnick]

I have mine set to 11.5 deg. That gets me a 105 mph cruise and reasonable short field performance. My strip is 900'. Static is 5200.

[Paul Z]

I flew my model IV today with the 70'' three blade warp drive. the most I could get at WOT was 4800. I have a friend who offered his digital level but I don't have a pitch angle tool. Do I need one?
I guess I'll call Warpdrive for the torque values, but can anyone ballpark the numbers.

Yes you need a pitch angle tool. It is the only way to assure you have the level at the right prop angle.