[TowerTalk] Anyone using spiderbeam for 40m?

[dw]

Yes, the Hex appears to perhaps be the easiest due to the shorter
lengths needed.
I would guess that for 40m the spreaders would each be no more than 29
feet long.
I believe Max-Gain sells their "type-6" spreaders that would reach that
distance for $60 bucks a pop.
Jackite also sells a 31 foot pole for $80 bucks a pop.
I sent an email to South Western Ag-supplies ( Thanks Patrick for that
tip!! ) to see how long their poles are.
A 40m hex would be a fun project :-]


On Wed, Sep 9, 2015, at 08:38 AM, ve4xt at mymts.net wrote:
> Based on a design I found online, and reverse-engineering for some
> omitted dimensions, it appears you would need the corners of the hex to
> be 21 feet out from the mast. Since they gain strength from the
> tensioning provided by bent spreaders, the arms would then need to be,
> what, 26 feet long?
> 
> Is there value in trying to engineer something in two dimensions instead
> of three?
> 
> The 40m hex has been done. I googled 40m hex beam and found several
> pages.
> 
> Done well, it should be plenty sturdy. Seems the poles Patrick referenced
> might be ideal.
> 
> 73, Kelly
> ve4xt 
> 
> Sent from my iPad
> 
> > On Sep 9, 2015, at 9:11 AM, dw <bw_dw at fastmail.fm> wrote:
> > 
> > Hi All,
> > Does anyone have any experience with the spiderbeams?
> > I would really like to put up something light-weight for 40 meters.
> > I believe the spiderbeam 40m unit is only 17 pounds.
> > Not sure if anyone makes a hex for 40m.
> > But I think Array Solutions may now have a moxon for 40m.
> > I might be tempted to build myself if I knew I could get fiberglass
> > sections long enough for a 40m unit.
> > 
> > Thanks :-]
> > N1BBR
> > -- 
> > Bw_dw at fastmail.net
> > 
> > _______________________________________________
> > 
> > 
> > 
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-- 
 Bw_dw at fastmail.net