0 Replies to “New Shorting Bar from Chalky”

  1. Its aluminium.  Haven’t found a source for copper rod yet.

    Hole is 7~8mm deep requiring M6 bolt.  I used a 6mm grub screw requiring a 3mm allen key.  

    Then I built my next antenna, I will be endeavoring to use the same tool for its assembly, either allen key, phillips head or blade head.

  2. Its aluminium.  Haven’t found a scource for copper rod yet.  Hole is 7~8mm deep requiring M6 bolt.  I used a 6mm grub screw requiring a 3mm allen key.  

    Then I built my next antenna, I will be endeavoring to use the same tool for its assembly, either allen key, phillips head or blade head.

    Grub screws are designed for this type of clamping application. Compared to a plain bolt face that is roughy flat, the grub screw face is cup shaped and will deform the copper shaft providing superior holding power.

    When I took on this task it was mentioned that previous shorting bar designs were known for their high failure rate i.e. coming loose.  I don’t believe that loctite will be needed with this design.

     Only the test of time will tell.

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