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.

[Wheels]

Mother's day, didn't get anything done on the plane but at the end of the day checked the pitch with a yardstick prop holder and a digital level. None of the angles were the same, so tomorrow I'll get serious. Air the tires to exact pressure, digital level the plane, chock the wheels, take communion, then begin. this is my first time but I'm hoping Warp drive will send me some good info on the process. I won't fly the plane till I'm happy with the numbers and I get a go ahead from my inspector.
thanks for helping.

[kitfoxnick]

When I adjust them I don't level the plane. I take a reading at the hub and take a reading at the tip. Take the difference between the numbers and that will give you your pitch. Make sure you pull out on the blade so the root is set. Another thing is make sure you have the match marks on the hubs aligned when assembling the hub halves.