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Thread: Borer prop, 82/42

  1. #1

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    Borer prop, 82/42

    For sale: McCauley borer prop, 82/42. MDL 1A175, GM8242, TC P857, approx 500 hours. Great shape, no dings, has been repitched from 44. $4,000 firm + shipping from Montana.Click image for larger version. 

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ID:	55175 et

    Doug
    406.431.8944
    dougmonger@msn.com
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    Staying alive in an airplane has a lot more to do with mastering ourselves than mastering the aircraft.

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    skywagon8a's Avatar
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    Quote Originally Posted by MT12 View Post
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    Does anyone know what the purpose of those extra holes outboard of the mounting holes are for?
    N1PA

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    Quote Originally Posted by skywagon8a View Post
    Does anyone know what the purpose of those extra holes outboard of the mounting holes are for?
    I don't know but both of my borers have them
    Staying alive in an airplane has a lot more to do with mastering ourselves than mastering the aircraft.
    Thanks skywagon8a thanked for this post

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    Quote Originally Posted by skywagon8a View Post
    Does anyone know what the purpose of those extra holes outboard of the mounting holes are for?
    Maybe a spacer that was not used for this application...

  6. #6
    skywagon8a's Avatar
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    Quote Originally Posted by astjp2 View Post
    Maybe a spacer that was not used for this application...
    I don't think so. The model identification should identify such. For example the "Borer" is a 1A175GM824x. The same propeller with a 2" spacer is a 1A175GMA824x.
    The A after the GM denotes a 2" integral doweled spacer.

    If you look here under NOTE 2 you will see the explanation:
    https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/bea3a1655efbdf3486257666004a73fe/$FILE/P-857.pdf

    I can find no explanation for those two holes in question. Perhaps McCauley uses them for balancing purposes? They are not in the older versions of this same propeller.
    N1PA

  7. #7
    Steve Pierce's Avatar
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    Quote Originally Posted by skywagon8a View Post
    Perhaps McCauley uses them for balancing purposes?
    I was thinking the same thing.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
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    Either that, or indexing on the CNC mill.


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    cubdrvr's Avatar
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    Originally Posted by skywagon8a
    Perhaps McCauley uses them for balancing purposes?



    Does that mean we might not have to send McCauley's to a prop shop after they are delivered?
    "Sometimes a Cigar is just a Cigar"

  10. #10

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    SOLD, thanks for looking
    Staying alive in an airplane has a lot more to do with mastering ourselves than mastering the aircraft.

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