Frozen Variable Inductors.

[Gary Thomas-8]

Hi. Im building the xv222. There are three can type
variable inductors supplied for use in the IF.
(L15-17). Manual instructs to "exercise" the cores
before insertion using the supplied shaft. They are
not simply tight they are frozen near the top of the
form. Any suggestions on how to loosen the cores
without damaging them. I already see what appears to
be a hairline crack in one of the cores which may have
been caused by trying to turn the frozen core. Any
help is appreciated.. 73 Gary aa1ue
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[zeke7237]

Gary, I've had good luck with that kind of problem by gently heating
the can, like with a hair dryer or heat gun .. YMMV

de john/w1rt

On 12/23/05, Gary Thomas <[hidden email]> wrote:

> Hi. Im building the xv222. There are three can type
> variable inductors supplied for use in the IF.
> (L15-17). Manual instructs to "exercise" the cores
> before insertion using the supplied shaft. They are
> not simply tight they are frozen near the top of the
> form. Any suggestions on how to loosen the cores
> without damaging them. I already see what appears to
> be a hairline crack in one of the cores which may have
> been caused by trying to turn the frozen core. Any
> help is appreciated.. 73 Gary aa1ue
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>

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[Ron D'Eau Claire-2]

Hello Gary:

Those are defective inductors. Do not install them unless the slugs can be
turned smoothly. A hairline crack will also affect the tuning slug
electrically (well, magnetically, but it'll change the inductance of the
coil).

Write [hidden email] and they'll send out replacements ASAP. You can
call 831-662-8345 instead, but e-mail is better because it provides a clear
written record of the problem and what you need.

Ron AC7AC



-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Gary Thomas
Sent: Friday, December 23, 2005 5:26 AM
To: [hidden email]
Subject: [Elecraft] Frozen Variable Inductors.


Hi. Im building the xv222. There are three can type
variable inductors supplied for use in the IF.
(L15-17). Manual instructs to "exercise" the cores
before insertion using the supplied shaft. They are
not simply tight they are frozen near the top of the
form. Any suggestions on how to loosen the cores
without damaging them. I already see what appears to
be a hairline crack in one of the cores which may have
been caused by trying to turn the frozen core. Any
help is appreciated.. 73 Gary aa1ue
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
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_______________________________________________
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