[TowerTalk] Alliance HD-73 Rotator U-Bolt

[Jack Brindle]

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 at 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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