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Re: [TowerTalk] Re another w51

Subject: Re: [TowerTalk] Re another w51
From: "Don W7WLL" <w7wll@arrl.net>
Date: Sat, 10 Jun 2017 10:12:39 -0700
List-post: <mailto:towertalk@contesting.com>
While I suspect there is no confusion in the ongoing current banter about the Tri-Ex W-51, it might be well to remind all that the W-51, as I recollect, differs structurally from the later WT-51 (one of the crankups I have). I don't have the specs for the W-51 but was there not a difference in the wall thickness of the vertical section tubing, the W-51 being thinner, thus reducing the load the tower could handle?? Seeing so many of these being up for sale or in use it might be useful if someone could post a chart that differentiates the important differences between the two, including whether the base mount dimensions also differ. This would be a useful tool when looking a load capability.

Don W7WLL

-----Original Message----- From: Skip via TowerTalk
Sent: Saturday, June 10, 2017 6:28 AM
To: Clay Autery
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Re another w51

I have a W-51 for sale on my web site if anyones interested.

Skip, KJ6Y
818-522-5421 cell
Communications Service Co
Sent from my iPad

On Jun 10, 2017, at 6:23 AM, Clay Autery <cautery@montac.com> wrote:

Sir, as respectfully as I can....

IF you are going to ignore our repeated and unanimous? recommendations,
then please do us the courtesy of NOT lecturing us about it.

Or at least write the lecture better and in a format we can slog through
in order to spot your glaring engineering/fab procedure mistakes (if
any... there always are, even with professional engineers).

Sincerely,

______________________
Clay Autery, KY5G

On 6/10/2017 5:57 AM, southbound suarez wrote:
Yes, I have studied the Tashjian website and have even spoke with a representative on the phone. Unfortinately their online and openly published documentation in my opinion quite vaugue and incomplete with respect to designing and fabricating your own base. I would make a guess that a decent amount of marketabilty for them comes from design services. They will sell a service and paper packaged presentation with engineering wet stamp of your older second hand tower revised with reccomendations and recaculated to new standards. They also have a more basic set of generic instructions that they will ship with new base purchase. The base with suggested installation instructions with example for areas with adobe type soil conditions are similiar is included for $395 plus $200 shipping. This might be very necessary if you require inspection. I am headed right near there this weekend and considered just paying the $400 and picking it up in person. However,, they dont carry these pieces in stock and there is a whole proccess of placing the order and the sales staff places the build ticket with the production dept. and a notice to notify the proper design staff who orders the material and sends it to fab who builds it in the order recieved. After its finished it has to be sent off for galvinizing. In other words it wont be ready ...... ready for several weeks up to couple months and certainly not this same weekend I am traveling thru there. So now we are looking at $600 to have it shipped! I am so impatient i would have been compulsed to pay $400 with the mindset that I am getting some limited factory support for a twenty something old tower. (the fact that they support old tower that predates their interest in the TriEx company is really worth a premium) A
s
 I
mentioned before I am impatient and I also draw the line at $600 to have to wait up to ? Months? Their written review service without any design considerations of your old tower cost $200
If I was for sure going to be inspected I would buy that....
As far as detailed erection instructions it appears they are going to need to be reimbursed. Man! Go look at all the design details and information that US TOWERS makes avail on their site..... So much for proprietary information. I am acquiring my rebar and doing concrete work as per US Tower info.... still no fabrication of actual base stubs. I did acquire 3/8 steel plate tho...... that appears to match that of the tower legs.
Should I be bumping  that up to.1/2 instead?
I agree that 3/4" holes perfectly lined up in 1/2" steal isnt something that you are going to do with a step bit and a cordless dewalt. It is my similar thought that these holes would likely be a job for Bridgeport or similiar milling machine. As for the steel alloy? Anyone offer up a clue? Also need the size and type of rebar that is used to weld onto the tabs? That no weld method sounds like kinda iffy with using angle? I Do notice that US Tower does similiar with anchor bolts. I just rather see more metal from the legs going into the concrete below than welded to a top plate. I saw one where the guy welded gussets . That seemed a bit better. US Tower definately does alot of rebar work to keep those anchor bolts from pulling out. I Am building my cage similiar with 2#6 per corner and the 20 #3 ties
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