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Thread: tank buffers pn 3505-09

  1. #1
    Join Date
    Aug 2013
    Location
    1 mile east of the Rocky Mountains.
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    855

    Default tank buffers pn 3505-09

    i would like to be schooled on pn 3505-09, "tank buffers (2), 1911-1931, 61" & 74" twins." what can be used in their place? what are they made of? or, are they necessary?

  2. #2
    Join Date
    Jan 2003
    Location
    England
    Posts
    1,298

    Default

    Dear Steve, I used to make them from neoprene rubber tubing cut at an angle. I've had nos ones of age-hardened rubber. I think they ran through until 1936. They are to stop the tanks banging or vibrating against each other in service. The tubing thickness is essentially the same as the distance from the underneath of the tank overlap to the top of the frame. I used to fit one on the top frame tube towards the front, and a second on the lower tube towards the rear. I sold the last of my stock to Harbor Vintage. They are probably not essential but nice to have, and good old friction tape wound round the frame tubes is no doubt a decent substitute.

  3. #3
    Join Date
    Aug 2013
    Location
    1 mile east of the Rocky Mountains.
    Posts
    855

  4. #4

    Default

    I was told you can use insultube (Air conditioning condenser, copper pipe insulation) Johnny Sells has 3505-26

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