[TowerTalk] Mast slippage

[Mac]

Ah !  i have done this and i will add with great success, AND my mast 
was 1/2" Chromoly 2" od and obviously then 1" id after drilling the hole 
i didn't use a bolt but rather a 1/2"  spring pin or roll pin and have 
NEVER looked back, drifted that pin into place and it has held brutally 
with both a long 46' boom 6L Telrex and my 4L SteppIR ..  on several 
occasion i have had reason to separate the mast from the rotor and using 
a straight punch pushing the roll pin on out was a no real brainer, then 
of course after the work was done just used the smooth end of the pin 
and drifted it back into place..

Best:  mac/mc  w5mc

On 7/28/2020 6:00 PM, Les Brown wrote:
> I have 2 large Yagis attached to a 3 inch OD ¼ inch wall thickness Chromoly
> mast running down the tower to a ProSisTel PST-71D. On a windy day, I hear
> creaking sounds from the tower. The mast is slipping slightly in the rotator
> mast bracket. I’ve already tried to tighten the 6 bolts, but it still slips.
> I don’t want to tighten them to the point where they might snap. I’m
> thinking that what I need to do is to go up the tower, drill a hole through
> the mast (the rotator mast bracket already has holes), and pin the mast and
> bracket. I understand that it’s not easy drilling through Chromoly pipe, so
> before I try this, I thought I would ask if any of you have any other
> suggestions.
>
> 73, Les VE3NNT
>
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