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Thread: FD-PCP Failed Tube Found

  1. #1
    Moderator rsterne's Avatar
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    FD-PCP Failed Tube Found

    You may remember that quite a while ago an FD-PCP failed, with the air tube departing the rest of the rifle and disappearing like a missile.... The tube has just been recovered, and here are photos of the threads....





    You will note that the tops of the threads are truncated, and the OD, when measured, was 0.014" below the minimum tolerance for that thread size.... If the receiver threads were at the maximum permitted ID, that only left 0.005" of thread engagement.... There seems to be little doubt that is why it failed....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal: Too many to count!

  2. #2
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    What that the one in the truck?
    Benjamin Discovery Mac1 modded <----- Ya Baby the new toy
    Webly Alecto .177
    QB79- with lots and lots of mods HPA <------ Go too AirGun for FT

  3. #3
    Moderator rsterne's Avatar
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    Yep, sure was....

    Bob
    Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
    Airsonal: Too many to count!

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