[time-nuts] Wenzel Oscillator Repair

[Ed Palmer]

Thanks for the reply, Stan.  It sounds like you've had lots of 
experience with this.  I think I'll hold off on using torches until I 
have a chance to practice on some expendable units! :-)

Ed
> Message: 1
> Date: Mon, 19 Jan 2009 18:51:02 -0500
> From: Stan W1LE <stanw1le at verizon.net>
> Subject: Re: [time-nuts] Wenzel Oscillator Repair
> To: Discussion of precise time and frequency measurement
> 	<time-nuts at febo.com>
> Message-ID: <497511E6.3090007 at verizon.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hello Ed,
>
> For soldered cans I use a gas torch to melt the solder and then I pull 
> apart the soldered parts.
>
> First I mark one side with a file/scribe to assist reassembly.
>
> I usually put the can in a bench vice for a firm mechanical grip.
> I put the soldered joint the furthest away from the vice jaws to 
> minimize the heat sink effect of the massive vice.
>
> I apply heat evenly to the solder joint and pull off the soldered cover.
> Avoid excessive heat, it will only cook the parts inside.
>
> I have used butane and propane gas torches.
> Have also used acetylene ( no oxy ) as with MAPP gas.
>
> May help to have a method of grasping the soldered cover.
>
> In production a induction heater is probably used to get the joint hot, 
> then either preformed solder melts
> or solder is manually applied.
>
> What is important on disassembly is to be able to get a grip on the 
> parts, to ease separation.
>
> Stan, W1LE    FN41sr   Cape Cod
>