[TowerTalk] Ham IV shimming

[Frank Davis]

> 
> I have been investigating what appears to be  binding of my antenna system during portions of the rotation.  The mast I am using is 48mm and the Ham IV rotator shims are 2mm thick.  There are  two shims that  are between the mast and the back of the rotator socket.  The clamping plate  doesn't have any shims - The two shims are on each side of the back face of the rotator socket.   There is a thrust bearing as well but I took the bolts out last fall to see if that would solve my problem then but it didn't.
> 
> So the centering is off by 2mm.??....My inclination is to put 4mm shims in place of the 2mm shims at the back of the rotator socket but maybe thats not right.   ...is it neccessary to have the same thickness shims (2mm) under the clamping plate as well?...can't see how that helps with centering? .  The tower is a Hy Gain HG52SS.
> 
> 73 Frank VO1HP