On Sun, 19 Oct 2003 21:19:48 GMT, Bill wrote:

I'm in need of a Rohn BPL45G to convert a standard 10 foot section of Rohn
45 to a flat top for installing a thrust bearing.
If anyone has one in good conditon or a new on laying around pleae let
me know what you would be asking for it.
73 Bill W4OM

If you have a standard top section, or just a straight section, just
get one of the heavy duty rotor plates and mount the thrust bearing on
that.

I do have one of the top sections with top plate and thrust bearing,
but I also use the heavy rotor plate for another thrust bearing down
in the tower.

Using a standard 10 foot section I'd use two rotor plates (both with
thrust bearings. One just below the first cross braces at the top and
the second about 4 feet down. The find something to cap the tower
legs.

On mine with the top plate, I use one thrust bearing there and another
just above the rotor about 25 feet down inside the tower.

It's easy enough to weld up (and bend) a top plate, but not so easy to
get it double hot dipped galvanized. That is one heavy piece of
steel. I think it's either 5/16ths or 3/8ths inch plate.
If you don't weld you could take the diagram of the top plate to a
metal shop, get it cut and drilled and have three legs welded on that
will just fit over the top of the tower legs. Then bolt together in
the usual fashion. Remembering that ROHN uses 2 bolts per leg with
one being 5/16ths and the other is either 3/8ths or 7/16ths. If I had
my catalog handy I'd look it up, but I don't know where I put the
thing.

Roger Halstead (K8RI EN73 & ARRL Life Member)
www.rogerhalstead.com
N833R World's oldest Debonair? (S# CD-2)