Adjustable Propeller Angle gauge- which one to get?

[kmach]

Thanks to ALL !, great info, I added a warp drive protractor to my ACS order, I am looking forward to using it on my Sensenich prop to experiment with settings. Thanks; Kevin

[chefwarthog]

Thanks TJ. for the info, and for the gig with lazer.... that wath I like of this forum always new idears!

[kmach]

Hi Steve,
where on the Sensenich blade was he taking the readings ?

I have fooled around a bit with the warp drive protractor now and am using this method; I measured 3 '' in from tip on both blades, drew a vertical ,level line .

I aligned the protractor to the line vertically,and level.

I have the protractor on the pilot side, and rotate blades to take angles on pilot side only, blades are measured from floor to bottom of blade to keep all consistant. I have not changed any settings yet, but I have a difference of 1 degree from the two blades using this measurement method.

I sent Sensenich an email asking where on the prop to take the angle measurement, but no reply as of yet.

[cap01]

kevin , warp drive instructions are to use the front plate on the prop hub to set the vertical on the protractor bubble for the reference . i use a level to get the blade horiziontal on the pilots side of the airplane then install the protractor at the prop tip . i think the trick is to get the protractor installed at the exact same spot on all the blades . if you can use the warp instructions let me know and ill send them .

[kmach]

I have the instructions, after reading the warp drive instructions I decided just to use the gauge to reference blade to blade angles and not worry about hub to blade numbers. On the Sensenich the hub has a plastic insert in the center of the hub that is not flat, when you loosen the locking nuts on the blades you are supposed to turn this center insert to set the blade angles together at the same time . I am
using the warp drive protractor to verify the blade angles are the same. here's a pic of the Sensenich hub

[SkySteve]

Kevin,
We used the same method you described. I can't remember the exact distance we went inboard from the tip, but we used a level in a horizontal position to get the blade level, then used a level in the vertical position to find the vertical level spot working inboard from the tip. We marked this spot vertically on the back side (plane side) of each blade, then measured the distance on each blade from tip to the mark to verify each mark was the same distance from each tip. Then we used that mark to set the degree of pitch with the Warp gauge.

Finally, we set up a gauge on the floor from one blade tip (with the blade tip in the straight down position). The gauge gave a visible location of both the blade length and tip location. Leaving the gauge in place, we turned the prop so each blade was lined up with the gauge, one at a time. This verified each blade was the same length and was set on the exact same track.

One last thing. We did find that the prop was way out of balance and we did have to balance it.

[kmach]

Thanks Steve, sounds like I'm on the right track

[kmach]

I talked with a Sensenich Tech today, the proper place to take the angle measurement on the blade is, from the hub , 75 percent of the total blade length from the hub to tip.

they recomended the flatest blade surface you can find , in the 75 percent area .

I will give that a try when I get some time, I have to decide between going flying or messin with the prop !!

[SkySteve]

That's right about the spot we were using to set the prop.