The HD-73 has a metal strap on the nut side of the U-Bolt. I would suggest
having a machine shop fabricate a duplicate of that strap, then use regular
1/4-inch bolts to replace the custom U-Bolt they used. This would provide the
same support, but be much easier to replace.
73!
Jack, W6FB
> On May 31, 2020, at 2:29 PM, Gary <gary_mayfield@hotmail.com> wrote:
>
> Greetings,
>
> Last summer someone in the club decided tighter is better and
> mangled the threads on the U-Bolt that is part of the mast clamp on the
> club's Alliance HD-73 rotator. It is Alliance part number X-19434-B.
>
> An email to Norm's got a message back saying they will only sell the whole
> clamp assembly.
>
> A trip to several hardware stores has not turned up anything that fits.
>
> I am not a machinist, but my measurements say the holes it goes through are
> at most ¼ inch in diameter. They are 3 inches apart center to center.
>
> I would love to find something the same original shape, but I think a
> standard U-Bolt shape should work.
>
> Anyone know where to get something that works?
>
>
> Thanks and 73,
> Gary "Joe" kk0sd
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