[amsat-bb] Re: Fibreglass tube for G5500?

[John Heath]

Hi Cris

There is an additional benefit with Fibreglass tube.
Just use the wood inserts on the clamping areas, rotator and antenna clamps.
Then the tube will flex in high winds and absorb some wind enegy.

73 John G7HIA




________________________________
From: Howard Long <howard at howardlong.com>
To: Chris Bloy <chris at photofuture.co.uk>
Cc: Amsat - BBs <amsat-bb at AMSAT.Org>
Sent: Tuesday, 23 August, 2011 8:24:38
Subject: [amsat-bb] Re: Fibreglass tube for G5500?

Chris

Haydon Communications stock (or at least did stock) various diameters/lengths.

Howard

Sent from my iPhone

On 23 Aug 2011, at 08:03, Chris Bloy <chris at photofuture.co.uk> wrote:

> Hi all,
> 
> Thank you all very much for your input and as expected the aluminium pole isn't 
>an option, so I am going down the route of fibreglass tube with wood insert.
> 
> Just need to source a UK company that can supply the tubing! I have contacted 
>Engineering Composites and will await a price!
> 
> All the best!
> 
> Chris - M0DQO
> FUNcube Educational Outreach :)
> 
> www.funcube.org.uk
> 
> www.projectoscar.co.uk 
> 
> Sent from my iPhone
> 
> On 22 Aug 2011, at 16:28, "Alan P. Biddle" <APBIDDLE at UNITED.NET> wrote:
> 
>> Chris,
>> 
>> As has been pointed out, an aluminum liner won't work.  I have a fiberglass
>> tube, and found a solid wood rod at a local building supply store.  It is a
>> perfect friction fit.  I cut it about 2 inches shorter than the tube,
>> leaving about an inch space at each end.  I stood it on end, and filled one
>> end with RTV.  After it hardened, I swapped ends and sealed the other end.
>> It has been in use for almost 15 years with no failures or leakages.
>> 
>> 73s,
>> 
>> Alan
>> WA4SCA
>> 
>> 
>> 
>> 
> 
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