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  • kiwi
    started a topic Airplane Propeller

    Airplane Propeller

    I had been looking for an airplane propeller for some time to hang up in my shop. One of my friends told me she knew where one was and that she would get it for me. I did not know that it would be bent. Any ideas how to straighten the prop? I thought about heat but I have never tried anything this big before. I was also concerned that aluminum of this size would dissipate heat rapidly. Any help would be greatly appreciated.
    Thanks,
    Nick
    Attached Files

  • kiwi
    replied
    OK, I spoke to Brian at new england propeller and he said that the propeller is solid aluminum. He said that I should heat it and bend it, I will keep everyone posted...I hope it doesn't break. Well, if it does I guess I will just weld it back together.
    Nick

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  • kiwi
    replied
    Here is some additional information on the prop:

    Manufacturer - McCauley
    Serial Number - 807346
    Model Number - 2AF34C55-

    Thanks,
    Nick

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  • fun4now
    replied
    love the look of the old wood ones.

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  • kiwi
    replied
    Originally posted by AM2Mastro View Post
    Most modern props are hollow, and some have a composite epoxy poured into the center for strehgth. You need to be really careful in doing that. Even the professionals at museums tend to just replace a prop in that condition. Find a manufacturer's name on it somewhere if at all possible and look them up, they can tell you about the construction technique used and give you the best probable method. My advice, as an aviation mechanic, is to either hang it bent, or remove the good blade and hang that alone. It will look as good, perhaps not as striking as the entire hub, but for your purpose, ****, anything is better than nothing right.
    Thanks for the advice. I was going to call a few folks before attempting to repair the prop. As for hanging the good blade...they are both bent. I will keep everyone posted.
    Thanks again,
    Nick

    Leave a comment:


  • migwelder05
    replied
    not to try and steal the thread but we got an old wooden one hanging in my dinning room from when my granddaddy worked at sensenich propeller here in littiz, Pa. This one is when they still made wooden ones the make aluminum ones now. this one is not airworthy.

    http://tinypic.com/view.php?pic=16jg44&s=4

    http://tinypic.com/view.php?pic=2rhsbiq&s=4

    http://tinypic.com/view.php?pic=av4ytt&s=4
    Last edited by migwelder05; 11-07-2008, 12:47 PM.

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  • AM2Mastro
    replied
    Most modern props are hollow, and some have a composite epoxy poured into the center for strehgth. You need to be really careful in doing that. Even the professionals at museums tend to just replace a prop in that condition. Find a manufacturer's name on it somewhere if at all possible and look them up, they can tell you about the construction technique used and give you the best probable method. My advice, as an aviation mechanic, is to either hang it bent, or remove the good blade and hang that alone. It will look as good, perhaps not as striking as the entire hub, but for your purpose, ****, anything is better than nothing right.

    Leave a comment:


  • Bodybagger
    replied
    That'll take a lot of work to look like a good prop again. It does have some real character in its present state.

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  • Headnut
    replied
    Check with your local airport, ask about a prop shop.
    Ask where they send their props. Shouldn't cost too much to have them do it as it won't be going on a airplane, if it was going to be put into service it would have to be balanced.

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  • kiwi
    replied
    Heat sounds like the way to approach this project, but I will be cautious and call some of the experts mentioned, in order to avoid any problems. If you have any other ideas please let me know.
    Thanks,
    Nick

    Leave a comment:


  • FormerTankSarge
    replied
    Cool Prop

    In all the years I flew, never got a bent one, but maybe the pilot forgot to extend the gear

    Anyway it looks cool like it is, the advice given on bending is good, but I have no idea how well it works.

    Good Luck, let the forum know what you did..

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  • Paul Seaman
    replied
    There is an aviation salvage yard in Phoenix AZ I used to deal with for unusual aluminum pieces. I do not recall the name, but google them and you'll find it. Contact them and ask this same question. An aviation salvage yard might be a good start, or contact the aviation museaum at the smithsonian as they are always doing restoration they may have an idea how to accomplish this with the least fatigue on the metal.

    Peace,\
    Paul

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  • c wagner
    replied
    Hang it up bent, it would be even more interesting if you found out the story behind it.
    But you always could make up your own!!!

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  • LA Weld
    replied
    As the Prop will not ever be in service again here is my take as I have repaired/ straightened a few rims and forward controls.

    You are definitely gonna need some heat and I recommend a nice oa set up with a rose bud.
    Heat that puppy to about 750 range and add a slow pressure to the bend. Not sure if a prop is hollow but if it is we are gonna have a issue and will need to sling/strap and pull the bend out.
    the key to success is use your common sense and take your time.
    Go slow and don't throw too much heat at it.

    The funny thing with aluminium is when you add the heat most of the bend will come out naturally. A little heat goes along way and I also use a raw hide hammer and it does wonders.

    Good Luck and give a shout if you need more help.
    Laurence

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  • fun4now
    replied
    a really big duck. LOL

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