[TowerTalk] mast and bearing

[Roger (K8RI)]

> Larry,
>
> Will this work;
>
> http://www.glenmartin.com/industrial/pg18.htm


It depends on what goes on the mast but if not large I'd clamp the mast 
between couple of  2 X 4s or 2 X 6s with through bolts and washers. I let it 
tighten at an angle so one leg of the tower is also clamped between them.

Another route is to just take a 2" pieces of steel angle, drill and bolt it 
to the rotator plate. Then using a "muffler clamp" that will fit the mast, 
"U-bolt" it to the angle. Note, plain muffler clamps are uncoated steel and 
rust rapidly.  Saddle clamps work much better but cost a lot more. All are 
far cheaper than using a commercial mast clamp.

I've used both methods sucessfully. Just don't expect them to keep a large 
array from turning.

73

Roger (K8RI)
>
> Dave
>
>
> Larry DiGioia N8KU <towertalk at longwire.com> wrote:
> I want to put a mast at the top of my Rohn 45 without installing a
> rotator (yet.)
>
>
> I can picture the top OK, the mast, bearing plate and thrust bearing,
> but what do I do where the mast comes down to the rotor shelf? Is there
> something else I can put down there to hold the mast temporarily? (It
> needs to be stationary, not "turnable.") Thanks guys.
>
> -- 
> Larry  N8KU
>
> l o n g w i r e . c o m
> HF - DX - CW - Digital
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