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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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 Posted: Fri May 01, 2009 5:35 am Post subject: Prop Pitch Adjustment Tool |
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While we are talking about props, let me tell you about the Laser Prop Pitch
Tool I used to get all three new blades singing off the same sheet of music.
Initially, I set one blade to the pitch I thought it should be with the Warp
Drive Protractor.
After I quickly and easily slipped the tool on that blade, which was in the
horizontal position, I secured the tool with a spring clamp which, in
addition to holding the tool in place, applied pressure to the laser switch
to keep it in the "on" position.
Positioning the tool on the blade is automatic. Don't need to worry about
not getting it set at the correct spot and angle.
Placed a piece of 2X10 wood a couple feet long on the floor to make a mark
on with a felt tip marker at the pin point of laser light.
It was easy to repeat this two more times.
All three blades are all the same pitch.
After a short test flight, realized I needed another degree of pitch.
Repitching was quick and easy with this very light weight fiber glass tool
Scott/Icrash Icrashrc(at)aol.com designed and fabricated.
I liked it so much Scott decided to let me keep it rather than hear me whine
if I had to send it back to him. In the process Scott told me he would be
glad to make up as many of these as necessary to help other folks get their
ground adjustable props calibrated easily and correctly.
Can't have mine.
john h
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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icrashrc
Joined: 16 Mar 2006
Posts: 247
Location: Mishawaka, In
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| Posted: Sat May 02, 2009 3:24 am Post subject: Re: Prop Pitch Adjustment Tool |
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For those that don't know here's what John H. is talking about.
http://www.ill-eagleaviation.com/prop_laser.htm
Note that John used his handy Warp supplied protractor to set the first blade to the pitch he wanted, then used the new tool to match the rest of the blades to the first one. You can also use the new tool without the protractor by calculating the offset needed. For example if your leveled prop blade was 60" off the floor you would need about 1 1/16" of offset for every degree of pitch.
There should be enough info in the pictures for anyone to copy the design to use for themselves. If you would like one made for you Paul and I would be happy to do that as well. The cost would be $30.
Scott
www.ill-EagleAviation.com
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JetPilot
Joined: 10 Jan 2006
Posts: 1246
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| Posted: Sat May 02, 2009 7:52 am Post subject: Re: Prop Pitch Adjustment Tool |
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That is awesome. Given the long distance to the floor, the laser would be much more sensitive than any protractor would be, and the pitch could be set much more precisely with the laser.
Mike
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"NO FEAR" - If you have no fear you did not go as fast as you could have !!!
Kolb MK-III Xtra, 912-S |
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Sat May 02, 2009 8:57 am Post subject: Prop Pitch Adjustment Tool |
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> That is awesome. Given the long distance to the floor, the laser would
be much more sensitive than any protractor would be, and the pitch could be
set much more precisely with the laser.
Mike:
That is exactly what Scott's instrument did for me.
Was the quickest I have ever synch'd all three blades and the closest I have
ever gotten them all to the same pitch.
Well worth $30.00. I got mine. 
john h
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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