Probably best to let a foundry build a new base. With older Tristao 3
sided crank ups I always use 1" universal bolt with the bottom 6" in an L.
I found when I first put down the tower years ago that Tristao did a poor
job of the base template and I had to get a foundry to build me an expansion
piece so I could attach one leg of the tower. I corrected the base template
and it worked perfectly the last two times.
The 555 was the Wilson M-61 so they probably wanted to get away from his
design...it was the weakest part of the tower.
>I think the general reflector population ought to know that U.S. Tower
>redesigned the hole position in the 555 base several years ago, which is
>the new base won't fit on the bolts (so Jan informs me.) This certainly
>cause problems for anyone needing to replace the base due to damage or
>I wonder if it would be safest and least expensive to have a really good
>welding shop fabricate an entirely new base to the old specifications?
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