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  • Help to identify propeller

    Hi everyone, I have a 4 blade propeller that has the following identification numbers on it

    DRG CD 40597A
    SER NO 4668

    It also has a small round logo with circle and inside circle A73

    Can anyone give me more information on this propeller?

    Thanks for your help!
    Attached Files
    Last edited by nl77621; 03-28-2014, 08:52 AM.

  • #2
    It's certainly an unusually high drawing number, especially if it's WW1 era. I certainly don't recognize it offhand. Do you have a full picture of the prop?
    Dave

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    • #3
      Hi Dave, thanks very much for your help! I've posted some more pictures let me know what you think.

      Thanks again

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      • #4
        How long is it from tip to tip? I think that's an auxiliary prop of some kind, usually for generating electric power. The 4 hole hub virtually eliminates its use on standard aircraft engines.

        Bob Gardner may be able to refine it futher. He drops in here from time to time.
        Dave

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        • #5
          wallpaperman

          hello,
          I am from Finland and bought this Astra propeller from Estonia at 1992.

          8095
          PS 185 B
          D 305
          S 172

          Lenght is 305 cm
          Blade wide is 29 cm
          hub is 23 cm
          hub hole is 8,7 cm
          4 boltholes

          Matti Parkkila, Wallpaperman

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          • #6
            Hello Finland!

            Astra props are comparatively rare. The serial number of yours, 8095, is the latest I have recorded which suggests your prop was made in the latter half of 1918. Two Astra props are recorded for the NAG 185ps engine powered DFW CV, although they had a diameter of 2950mm and a pitch of 1850mm compared with yours of 3050mm and 1720mm respectively, so you should regard this attribution as possible rather than probable.

            With kind regards,

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

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