[TowerTalk] Broken Rohn 25G Base Section

[rkstover at mchsi.com]

<<And the fourth reason is that 25G leg wall is really THIN. I don't think
they're thick enough to weld too without putting a hole in the material. You
can't Cadweld them either.>>

I regularly welded much thinner material than a 25G tower leg.
20ga cold rolled sheet steel formed into "louvers" for 5th wheel tailgates. 
They were welded with butt joints against 14ga side channels. The tubing in a 
25G tower leg would be considered a "vacation".



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> <snip>.
> > >
> > And the fourth reason is that 25G leg wall is really THIN. I don't think
> they're thick enough to weld too without putting a hole in the material. You
> can't Cadweld them either.
> >
> I have welded up H-frames out of thin wall conduit and regularly weld on 16
> gauge sheet metal using a MIG welder.I use 16 gauge for the fixtures that
> hold the fuselage of the airplane I'm building.  Although much larger than
> the legs of a 25G they are no thicker.
> 
> Aircraft tubing is even thinner. It can be welded with MIG, TIG and gas,
> with gas being the preferred method.
> 
> OTOH welding a tower leg, like aircraft tubing is something for an
> experienced welder.
> 
> Roger Halstead (K8RI, EN73 & ARRL Life Member)
> N833R, World's Oldest Debonair (S# CD-2)
> www.rogerhalstead.com
> 
> 
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