FYI...
http://www.bxtower.com/
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TBX Tower Series
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From: TexasRF--- via TowerTalk <towertalk@contesting.com>
To: sohosources@yahoo.com; towertalk@contesting.com
Sent: Tuesday, June 14, 2016 10:30 AM
Subject: Re: [TowerTalk] Rohn BX bolts, plates and shelves...
Kirk, these towers are now made by Thomas Shelby Co. You can find them
with a Google search.
When you delete the two top sections the tower becomes a model HDBX48 and
the wind loading is 18 sq ft. They always said the maximum boom length
should be limited to 10 ft but most users ignored that directive.
The section #3 top plate is called a BXT3, rotor plate BXR3. The stock top
plate is drilled for a plumbing floor flange. Many users simply screwed a
short water pipe nipple into the flange and used it as a top sleeve for the
mast. If you want an inexpensive bearing, a Yaesu GS065 is only $65 and can
be mounted on the BXT3 plate.
Bolts, most likely the existing bolts are fine but that is your call.
Foundation hole size for an HDBX48 is specified at 5' 9" square, 4ft deep.
It takes 4.9 cu yds. There is a hinged base, BXHC78, with 3/4" anchor rods
and a fixed base, BXB8 made with 4ft stubs available. Some users have made
their own base stubs from galvanized plumbing pipe. A 10ft length of the
1.9" OD size cut into three pieces and drilled for the legs bolts would be a
good choice.
These were great towers for the money back when Rohn was making them. I
have not seen one of the Shelby models and I see the pricing is much higher
now, naturally.
Whatever you do, don't plan on re-galvanizing the sections as the rivets
will melt and you will have a giant erector set on your hands.
Hope you find some use for this info.
73,
Gerald Williamson K5GW
GM Texas Towers
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