tank buffers pn 3505-09

[Steve Swan]

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?

[Steve Slocombe]

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.

[Steve Swan]

Thank you Steve.

[shermanpup]

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