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Re: [TowerTalk] Cushcraft X7 Question three.

To: Nu1Oscar@aol.com
Subject: Re: [TowerTalk] Cushcraft X7 Question three.
From: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>
Date: Sun, 19 Aug 2012 17:53:07 +0100
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Thanks Chris,

The construction is exactly the same, I had considered bending the section
of tube that forms the connection to the element back to the tube wall
shape again, but thought the metal might fracture, the solution shown is
what to do if that happens.

73, John. G3JVC/GM3JVC.




>
> I don't know if they are using the same design as with the A3S but it
> sounds very similar. Take a look at this site by a ham from the
> Philippines. I
> found it to be very helpful in cleaning out my A3S traps.
>
>
> > http://www.para.org.ph/membersarticles/A3S/
>
>
> Good luck!
>
>
> 73,
>
>
> Chris/NU1O
>
>
>
> In a message dated 8/19/2012 11:57:22 A.M. Eastern Daylight Time,
> g3jvc@jcleeve.idps.co.uk writes:
>
> Gentlemen,
>
> Things appeared to be going so well with the  refurb, until today and its
> raining as well. My mind turned to looking at  the OEM balun and the traps
> in the reflector, which I can work on under  cover.
>
> The OEM balun, in spite of it being aloft for ten years or more,  was as
> clean inside as when it was new, all the connections tight and  clean,
> breathing a sigh of relief, I cleaned up the exterior and put it to  one
> side.
>
> Now the traps. I slid the end covers off the first pair of  traps on one
> half of the reflector, the screw holding the outer cover,  which also
> forms
> one half of the tuning capacitor, is stainless and really  tight, I
> applied
> the air line to the interior of the traps via the gaps in  the end
> concentric insulators, and all seemed well. Simple checks with the  ohm
> meter did not detect any high resistance between the inductor winding  and
> the element sections, so far, all well and good.
>
> However,  dismantling the traps in the second half of the reflector
> revealed a  problem, both traps had a dried mud filling one end, one trap
> also had the  remains of a charred bug, so he paid the ultimate price. I
> suspect that  both these infestations were wasps of some sort ,but I dont
> suppose the  original owner of the X7 noticed any difference in
> performance.
>
> My  question for X7 users in the group. How do you dismantle a Cushcraft
> X7
> trap to clean the mess out? I can see how it was assembled, but the  final
> act of the constructor was to put 4 "dimples" in the outer cover  which
> locks the outer cover into the concentric insulator at one end of  the
> trap. I tried gentle force, then a small wooden block and a pin  hammer,
> applied to one of the protruding element sections, in an attempt  to
> "drift" the concentric insulator along and out of the grip of the  outer
> cover, but although the insulator moved a little, the dimples held
> secure.
>
> The mechanics of concentric trap designs are similar, and in  the past I
> have cleaned out ants nests from Hygain traps, and having undone  the the
> outer cover fixing screw, all that was required to dismantle the  trap was
> a gentle application of pressure, and the outer cover was easy to  remove.
>
> I know others have had similar trap problems, please, put me  out of my
> misery, how did you resolve it.
>
> Sincerely, John.  G3JVC/GM3JVC.
>
> _______________________________________________
>
>
>
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>


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