[Towertalk] tailtwister installation

[Tom Anderson]

Jim:

I've got a Ham IV (1988 vintage recently rebuilt by Norms Rotor Service) with the
same 2 1/16 specs. and my old Hygain manual advises putting 1/32 shims on both
sides of a 2" mast in the rotor to center it.  Shim material wasn't listed though.

Tom, WW5L



Don Havlicek wrote:

> Jim,
> The best method is :
> 1.  Loosen the rotor from the rotor plate and the rotor plate from the
> tower.
> 2.  Seat the mast centered in the top of the rotor.
> 3.  Firmly attach the mast in the rotor.
> 4.  Firmly attach the rotor to the rotor plate.
> 5. and LAST .. tighten the rotor plate to the tower .. being very
> careful that it remain centered in the tower.
> Don
> N8DE
>
> n1nk wrote:
> >
> > just got through attaching my 2" OD thick wall aluminum mast to my
> > tailtwister.  noticed that the mast did not seat all the way into V of the
> > bell housing.  spent a few minutes looking at the situation and decided that
> > the bell housing is made for slightly smaller OD tubing.  took a look at the
> > manual and noticed that they call for 1.5" ID/1.9" OD steel pipe.  also
> > noticed that the current advertising calls for 2 1/16" OD tubing.  should be
> > noted that the rotor is vintage 1995 or so.
> >
> > now the question is:  what to do about this?  hate the idea of buying a new
> > mast and hate the idea of buying a new rotator even more.  one thought is to
> > file the shoulders of the housing away a bit so that the tube can seat
> > against the V of the housing.  not sure what either the current situation or
> > a modified housing would do with respect to centering the mast/rotor below
> > the thrust bearing.
> >
> > suggestions are welcome.
> >
> > Jim
> > N1NK
> >
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