[TowerTalk] Needed: M2 Aluminum Tubing

[n0tt1 at juno.com]

"You can accomplish the same result by using a short sleeve of the 
intermediate sized tubing at the joint,..."

I agree with Tom on that.  I ordered several 40m verticals from
Invonantennas (sp),
a company that was located in GB.  All the swags were very short which
allowed the smaller tubing in the joint to wiggle around when the wind
blew.
The wiggle was so bad that the inner tubing actually wiggled its way out
and
almost fell to the ground!!

Swags are okay when they are done properly....I would swag at 3X the size
of the tubing, e.g., 2" OD tubing should be swagged 6".  (Just my
opinion.)

Anyway, my solution was to cut off the short swags and use smaller tubing

to step down the size.

Charlie, N0TT

On Sat, 17 Jun 2023 19:24:14 -0600 Tom Hellem <tom.hellem at gmail.com>
writes:
> An alternate solution-
> Every time I have seen or worked with swedged tubing on a beam, the 
> swedged  portion has reduced the diameter by 2 sizes, for example 
> 1” down to 3/4” o.d.
> You can accomplish the same result by using a short sleeve of the 
> intermediate sized tubing at the joint, in the above example, 7/8” 
> o.d. (Assuming all the tubing sections are .058 wall).  I am just 
> guessing here, but this could save you some $ based upon  price 
> quotes I have seen from M2.
> 
> Tom K0SN
> 
> > On Jun 17, 2023, at 5:50 PM, Larry <lknain at nc.rr.com> wrote:
> > 
> > ?Several years ago M2 would supply it. I needed some pieces for 
> a KT36XA that were bent in a tornado and they did it. Perhaps they 
> have changed but I doubt it.
> > 
> > 73, Larry W6NWS
> > 
> >> On 6/17/2023 3:45 PM, Lux, Jim wrote:
> >>> On 6/17/23 12:29 PM, Richard Thorne wrote:
> >>> I'm looking for the following if your willing to ship or within 
> driving distance of Amarillo, TX
> >>> 
> >>> 1 each: 1 1/4" x .058 x  60" swagged at one end
> >>> 
> >>> 2 each: 3/4" x .049 x 60" sagged at one end
> >>> 
> >>> Thanks
> >>> 
> >>> Rich - N5ZC 
> >> 
> >> 
> >> I would think M2 would be happy to supply it - their entire 
> factory is full of machines that make batches of cut and swaged 
> tubing in a bewildering variety of sizes. Especially if it's a 
> replacement part for one of their antennas.  Shipping UPS for 
> something 5 ft long is no problem - they put it in a tube/box and 
> it's on its way to you.
> >> 
> >> 
> >> Now, if you wanted 20 foot long sticks, that's a bit more of a 
> challenge.
> >> 
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