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Curious about having custom ali parts machined

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  • Curious about having custom ali parts machined

    To anyone with a machine shop interested in making heli parts; I am curious what
    it would cost to have a couple ali inserts made for a Robbe rotorhead.

    I think all that would be required is a lath and a drill.

    The part is an insert that fits into each side of the main hub where the grips
    are attached and holds the damper o-rings.

    It's basically a cylindrical piece that starts at approx 17mm OD and has
    a step-down to 15mm for the area that fits into the hub. It has a 9mm hole through
    it that opens out to about 14mm to accomodate the o-rings.

    The stock ones are 20mm total length but I want the new ones about 9mm
    longer on the larger OD outside portion.

    IMGP2605.JPGIMGP2606.JPGIMGP2607.JPG
    Last edited by trillian; 03-12-2011, 01:04 PM.
    Kasama, Minicopter, Henseleit, JR, Shape, Beam
    Robbe, RMJ Raptor gasser, powered by
    Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

    member of Epsom Downs and Bloobird clubs
    Proud recipient of 7 EGS! and a platinum star

  • #2
    The 1st thing any machine shop will want Sheryl is a very detailed drawing of the part.
    Not sure about where you would go then but the local engineering shops could probably be found in yellow pages or your local businesses directory.
    Martin
    Aka RCSlopesurfer

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    • #3
      Originally posted by rcslopesurfer View Post
      The 1st thing any machine shop will want Sheryl is a very detailed drawing of the part.
      Not sure about where you would go then but the local engineering shops could probably be found in yellow pages or your local businesses directory.
      What I would be able to do is supply the existing part to use as a guide for all the dimensions and then
      explain what is to be changed in the new version.
      Kasama, Minicopter, Henseleit, JR, Shape, Beam
      Robbe, RMJ Raptor gasser, powered by
      Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

      member of Epsom Downs and Bloobird clubs
      Proud recipient of 7 EGS! and a platinum star

      Comment


      • #4
        It would also make sense to be confident about the spec of the material.

        Just to say it's aluminium or something wouldn't be much use as there are probably several different grades and types.
        JR Vibe Fifty fb (YS56)

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        • #5
          PM me & I'll make you a couple FOC.

          Comment


          • #6
            Originally posted by stillakid View Post
            PM me & I'll make you a couple FOC.
            What a superb offer
            Martin
            Aka RCSlopesurfer

            Comment


            • #7
              Thanks very much stillakid, I will PM you a bit later. Right now I feel pretty aweful as I came down with
              a nasty cold that stopped me getting out flying today and I'm fighting off a bit of a headache :-(
              Kasama, Minicopter, Henseleit, JR, Shape, Beam
              Robbe, RMJ Raptor gasser, powered by
              Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

              member of Epsom Downs and Bloobird clubs
              Proud recipient of 7 EGS! and a platinum star

              Comment

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