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  • Propeller clock

    Hi
    In my late father's possessions I found a propeller clock. It sits in the hub and there are no blades. The clock part works and is made by Davison and Partner Ltd Stockton on Tees

    On the bottom on the hub is the following
    503
    110 Le Rhone
    504K
    520N56
    Dia. 27
    Pitch 36S

    On the top
    G520N5

    Can anyone help with the date - I'm thinking WW1?
    Where would it have come from? My father was an RAF pilot (WW2 - 1983)

    Thanks

    Jenny

  • #2
    Good Morning Jenny,

    The details on the hub show that the prop was designed by Avro (Y503) and was made for a French engine of 110hp made by Le Rhone (110 Le Rhone) for a Royal Flying Corps training aircraft, the Avro 504K. The diameter and pitch of the prop were 2740mm and 2655mm respectively.

    The batch number of G520 indicates that it was made late in 1917. N56 indicates that it is the fifty-sixth prop in that batch of 100 props.

    If you sold it at auction here in the UK it would make about 200 GBP, about 300 USD. If you decide to sell it, let me know and I'll advise on the best auction house to use.

    Could you look closely at the hub and see if you can find some small squares, usually four in a group, with AID in them and a number under the AID. Each square is tiny, smaller than the finger-nail on a little-finger. These are airworthiness stamps and I would like the details for my database that I am building up. Often they are not legible.

    With kind regards,

    Bob
    Bob Gardner
    Author; WW1 British Propellers, WWI German Propellers
    http://www.aeroclocks.com

    Comment


    • #3
      Hi Bob - here are all the numbers off my prop

      I am quite fortunate in that all my impressed info is very crisp.

      TOP

      130 H.P. CLERGET
      110 H.P. LE RHONE
      DRG Y 503
      690
      87
      R.H.

      BOTTOM

      G. 1503.
      N. 84.
      R.H.

      FRONT INSIDE FRONT

      AID AID G1503
      652 652

      AID AID N84
      652 652


      Regards,


      Adrian.

      Comment


      • #4
        Propeller clock

        Good afternoon Bob and thank you for your very speedy reply

        What a wealth of information from a few numbers!

        I've looked all over the hub but sadly I can't find any AIM squares - were they always in the same place? Perhaps the clock face is obliterating them?

        At present I don't intend to sell the clock as its a very precious reminder of my late father but should the need arise I'll certainly get back to you if I may

        Best wishes

        Jenny

        Comment


        • #5
          Sorry!

          Sorry Bob - read AID numbers not AIM!!

          A Senior Moment I'm afraid!

          Jenny

          Comment


          • #6
            Hello Jenny,

            I am glad to have been of help.

            Thank you for looking for the AID numbers,

            Bob
            Bob Gardner
            Author; WW1 British Propellers, WWI German Propellers
            http://www.aeroclocks.com

            Comment


            • #7
              Thanks Adrian, for the info from your Avro 504 prop. The G number suggests that your prop was allocated its G number in late 1919. I have added the details to my database.

              With kind regards,

              Bob
              Bob Gardner
              Author; WW1 British Propellers, WWI German Propellers
              http://www.aeroclocks.com

              Comment


              • #8
                Dear Bob,

                We recently bought a wooden propeller clock here in Sydney NSW.

                If appropriate please feel free to include our propeller (with French clock) in your register. From previous posts to Jenny looks as if it came from an Avro, but we would appreciate your opinion on its origin.

                GY 503

                10 . LE. RHO (cut off here). Cannot see an extra ‘1’ to indicate 110 Le Rhone

                2655.

                28 (chipped edge)

                Rear of propeller: 35

                No square punch marks or AID seen

                8 bolt holes.

                Any information would be appreciated.

                Many thanks,

                Paul and Toby

                Comment


                • #9
                  'Morning Paul & Toby,

                  The drawing number Y503, where Y indicates Avro, is for a prop made for the Avro 504K, as you suspected. It had the 110hp le Rhone engine, as the markings suggest.

                  With kind regards,

                  Bob
                  Bob Gardner
                  Author; WW1 British Propellers, WWI German Propellers
                  http://www.aeroclocks.com

                  Comment


                  • #10
                    Thanks very much Bob. We hope the details can join your database.

                    best wishes
                    Paul and Toby

                    Comment

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