> Last year, I reported mast slippage with my PST-71D clamshell mast
>clamp.Well, after replacing the clamshell clamp with the nice K7NV 3 inch
>mastclamp, no more mast slippage. However, the weak link now seems to be
>therotator itself. In a strong wind, I hear a creaking sound as the
>rotatorslips a couple of degrees one way then the other. Is this actually
>turningthe gears all the way back to the worm gear or is there a clutch pad in
>thePST-71D that could be slipping? The Prosistel rotators use worm gear
>drives which means that you don't need a brake since there's no way you could
>induce the worm gear to turn in the wind. Creaking in the system is typical
>and it doesn't necessarily have to come from the rotator. I'm surmising
>what you're hearing is cumulative general tolerances in the drive system which
>is normal and not to be concerned about. How do you know that the rotator
>slips a couple of degrees? Does it move a couple of degrees and then move some
>more couple of degrees or it's the same couple of degrees you're seeing? If
>you can see it on the control box, it's probably just slop in the indicator
>system unless it moves progressively and additively. Cheers,Steve
>K7LXCTOWER TECH
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