I am also homebrewing a new base for a LM354HD, which uses the same base as
the LM470. I tried to buy a base from Tash Tower and they wanted $700 for
shipping charges plus the cost of the base! Ridiculous, so I also tried to
buy rebar for the vertical struts. I was told that the common rebar is not
suitable for welding...something about the temperature has to be too high
and would possibly make the weld joint brittle. There is a weldable rebar
but it is not very common and very expensive. I was informed that cold
rolled steel was the way to go. I paid $80 for 3 six foot lengths of 1.25"
cold rolled steel and I had the ears that were salvaged off the original
base welded to them for $300. I am still waiting for my welder buddy to
show up to weld on some rebar cross sections so I can remove it from my
horizontally oriented tower sitting on railroad ties. He is tied up with
some high priority welding down at the port of Tampa so hopefully he will be
able to finish the job this month.
If I were you, I would locate a steel supply house in your area and buy the
vertical struts. My price mentioned above should be a good guide to protest
you from getting screwed. If you have any questions, E Mail me and we can
talk off line.
Bob W6TR
----- Original Message -----
From: "Bill Winkis" <kc4pe@bellsouth.net>
To: <towertalk@contesting.com>
Sent: Monday, October 13, 2008 12:02 PM
Subject: [TowerTalk] #10 Rebar vs 1.250 Cold Roll Steel...???
> Am trying to get my LM70 back in the air...... have the concrete mount
> ears made and ready, however #10 rebar is not to be found in my local
> area....will have to be orderd out of Atlanta for $200.00 per 20
> feet....however the steel distributor says why not use "Cold Rolled
> Steel"...??
> Says 1.250 inch CRS is much stronger than #10 rebar and it only costs
> $148.00 per 20 foot stick...He says its hard to weld rebar properly
> without weakening the joint, that's why they wire most of it....where as
> CRS is easy to weld without any weakening of the joint....
>
> Why use rebar..is it because of the spiral wrap whic give the rebar a
> added locking strength...??
>
> -Bill
> kc4pe@bellsouth.net
> _______________________________________________
>
>
>
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