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    • tptguy
      tptguy last edited by

      Sorry, no prize, but wondering if anybody makes late 40's Olds trumpet valve guide bars ( for double slot piston barrels)
      Also, does anyone know the rod thread size used on mid 60's Conn Constellations.
      Thank you for all your help

      G.

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      • T
        Trumpetsplus Qualified Repair Techs Credentialed Professional last edited by

        I have made the bar from ABS but I think the nylon ones are available from Allied Supply - check with your local tech. Don't get many Connstellations in, but I would guess either 4-40 or 5-40.

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        • flugelgirl
          flugelgirl Qualified Repair Techs last edited by

          If you’re talking about the brass bar guides, they are fairly easy to replicate. Your local tech should be able to do it. I made one a while ago for one of our horns at work out of some brass stock, and it didn’t take long with proper measurements, thankfully the other guides were intact so I could use them to measure from!

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          • tptguy
            tptguy last edited by

            Thank you to both of you,
            I tried Bach nuts on the Conn and they are too small...I suspect size 6 something.
            I like tinkering with stuff and have square 1/8' brass stock. I'll see if I'm patient enough to make a few guide bars from that..but ABS sounds easier to work with, worth looking into.
            Thank's again

            G.

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            • tptguy
              tptguy last edited by

              I can tell, the 2 little slots will be the tricky part to do correctly...patience grasshopper

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              • T
                Trumpetsplus Qualified Repair Techs Credentialed Professional @tptguy last edited by

                @tptguy One of Conn's preferred threads was 6-40

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