"Paul Drahn" wrote in message
...
On 1/15/2014 4:55 PM, Ralph Mowery wrote:
While on the subject of tower bolts, why does Rohn 25g tower use two
differant size bolts on the legs ?

Obviously none of the respondents have had to mate two obstinate sections
of Rohn 25g together.

The smaller hole is for a drift to force the sections into alignment so
the larger bolt can be installed. Then you have an empty hole just right
for a smaller bolt. I suppose it adds a little strength to the joint, but
not much.

Paul, KD7HB

I have helped install a couple of towers and have done that, but did not
know that was the reason.

Have also used that Tower Jack to help out, but only knew about that in
the last 10 or 15 years.



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On 1/17/2014 12:09 PM, Ralph Mowery wrote:

"Paul wrote in message
...
On 1/15/2014 4:55 PM, Ralph Mowery wrote:
While on the subject of tower bolts, why does Rohn 25g tower use two
differant size bolts on the legs ?

Obviously none of the respondents have had to mate two obstinate sections
of Rohn 25g together.

The smaller hole is for a drift to force the sections into alignment so
the larger bolt can be installed. Then you have an empty hole just right
for a smaller bolt. I suppose it adds a little strength to the joint, but
not much.

Paul, KD7HB

I have helped install a couple of towers and have done that, but did not
know that was the reason.

Have also used that Tower Jack to help out, but only knew about that in
the last 10 or 15 years.



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I built a jack a couple of years ago, but have not had a chance to use
it yet.

Paul

"Paul Drahn" wrote in message
...

I built a jack a couple of years ago, but have not had a chance to use it
yet.


I built, or really had one of the guys in the shop where I work help build
one for me just before I put up my tower. Built out of scrap material and
in some spare time. Probably cost them $ 200 worth of labor..hi hi.. I
almost hate retirement ( retired 2 years) as I lost access to small pieces
of material and the equipment and people to help make small things. We had
a machine shop that could make almost anything that was not too complicated.
Couple of lathes, shears, benders, milling machines, and don't remember what
this one machine was called (thinking Iron Man) that could punch holes and
various shapes in steel and do some bending of very thick pieces.



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On 1/17/2014 3:00 PM, Ralph Mowery wrote:

"Paul wrote in message
...

I built a jack a couple of years ago, but have not had a chance to use it
yet.


I built, or really had one of the guys in the shop where I work help build
one for me just before I put up my tower. Built out of scrap material and
in some spare time. Probably cost them $ 200 worth of labor..hi hi.. I
almost hate retirement ( retired 2 years) as I lost access to small pieces
of material and the equipment and people to help make small things. We had
a machine shop that could make almost anything that was not too complicated.
Couple of lathes, shears, benders, milling machines, and don't remember what
this one machine was called (thinking Iron Man) that could punch holes and
various shapes in steel and do some bending of very thick pieces.



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IronWorker!
Paul, KD7HB

"Paul Drahn" wrote in message
...
, and don't remember what
this one machine was called (thinking Iron Man) that could punch holes
and
various shapes in steel and do some bending of very thick pieces.



IronWorker!

Paul, KD7HB


Thats it. Thanks. Looks like the one in the Wikipedia.

I was an electrician/instrument technician. Got the mechanics to make
anything that was not very simple for me. I was shown a few things about
that Iron worker. The thing I remember the most was it took a while to wind
up and a while to wind down after it was cut off. I watched it a couple of
times, but never used it. The one we had looked to be very old, but built
very strong.
Walked around it for a year or so and finally asked one of the mechanics
what it was. I could do simple things on laths and milling machines, but
not that thing.

Could have used it a few weeks ago when I was making a dual band antenna
mount for my truck. Had to use aluminum and a vice to do some bending. If
I was working, it would have been stainless steel and bent on a brake.



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