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Old Aug 29, 2014, 01:55 PM
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United Kingdom, England, Hertford
Joined May 2013
8 Posts
HI can someone help me. I have just put in a replacement motor after months of the the previous one being out. I have either lost some bits or had a brain drain, can someone therefore show me pics of how to attach the prop, i.e was there a prop saver? I only appear to have a rubber nose cone and cant recall how it all went together. Thanks in advance.
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Old Aug 29, 2014, 02:49 PM
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PikeStaff's Avatar
United States, PA, Doylestown
Joined Sep 2010
2,833 Posts
The original motor had a long threaded shaft; the prop would slip onto the shaft, and a couple of nuts jammed together behind the prop would then fit into a cast hexagonal recess cast into the back of the prop. A nut and washer would then retain the prop from the front, and that rubber spinner simply pushes onto the exposed end of the threaded motor shaft.

If your new motor does not have the threaded shaft, you will need to get a prop adapter that fits the new motor's shaft. It is also likely that the new motor, if not the same as the old, will need to be moved forward on the original motor mount simply to clear the cowling.
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Old Aug 29, 2014, 03:08 PM
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United Kingdom, England, Hertford
Joined May 2013
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That's really helpful. Thanks
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Old Sep 17, 2014, 08:56 PM
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United States, FL, Sunrise
Joined Jul 2011
221 Posts
Finally got all the repairs done and repainted with Art Scholls look. Still waiting on my cowl and have to go through the electronics, but it will fly again!
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Old Sep 18, 2014, 12:26 AM
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Zambia, Lusaka
Joined Aug 2012
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Nice looking paint job.
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Old Oct 28, 2014, 12:49 AM
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Australia, WA, Perth
Joined May 2014
35 Posts
Hay guys I just bought the hk pitts special can some please tell me where do I take the cg from the top wing or the bottom wing and how far back from the leading edge?
all help is appreciated.
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Old Oct 28, 2014, 09:36 AM
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United States, PA, Doylestown
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Quote:
Originally Posted by Clarkey View Post
Hay guys I just bought the hk pitts special can some please tell me where do I take the cg from the top wing or the bottom wing and how far back from the leading edge?
all help is appreciated.
The Gold Standard is: 1/2" forward of the rear upper wing mounting screw.

As you will observe, the upper wing has 2 mounting screws.... so, use 1/2" forward of the rearmost one.

All this being said, it isn't too terribly critical of the CG - apart from the absurd, of course. As long as you are in the near-vicinity of that rear mounting screw, you will be good to go.
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Old Oct 28, 2014, 08:07 PM
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Australia, WA, Perth
Joined May 2014
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Quote:
Originally Posted by PikeStaff View Post
The Gold Standard is: 1/2" forward of the rear upper wing mounting screw.

As you will observe, the upper wing has 2 mounting screws.... so, use 1/2" forward of the rearmost one.

All this being said, it isn't too terribly critical of the CG - apart from the absurd, of course. As long as you are in the near-vicinity of that rear mounting screw, you will be good to go.
Thanks for the help PikeStaff
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