[Heath] AR-3 - another question

[Robert Carroll]

The Heath Lab series of signal generators, LG1 and its descendants  often
have problems with the vernier.  I had a couple with the problem.  The
recommended procedure was over a  period of days to flow lighter fluid,
which is very flammable, down the gap between the concentric shafts and turn
the shaft back and forth while holding the plates in place.  I forget the
detail, but if this procedure did not free things up, the shaft was to be
heated with a very large old style soldering iron, which would cause shellac
like gunk to flow out of the concentric shafts.  Of course you don't do this
until you are sure all lighter fluid has evaporated.  There is probably
someone on this or other Heath groups who can shed more light on this. I
hope so as I have forgotten the details. 

 

Bob W2WG 

 

From: Heath [mailto:heath-bounces at puck.nether.net] On Behalf Of Guy
Giacopuzzi
Sent: Monday, April 18, 2016 4:16 PM
To: heath at puck.nether.net
Subject: Re: [Heath] AR-3 - another question

 

I'll check my "re-kitted" AR-3 this weekend when I go to Mammoth...
Guy


On 4/18/2016 9:36 AM, Kenneth G. Gordon wrote:

>From the wording in the assembly manual, it would appear that the 
main-tuning capacitor has built-in planetary reduction gearing, yet none of
the 
three receivers I have here exhibit that "feature". Tuning of the
main-tuning 
dial is direct and very fast.
 
In the past, I have seen such capacitors in which the reduction gearing was 
"frozen", and by judicious application of some proper lubrication, this
could be 
"reactivated".
 
So, did the AR-3's main tuning capacitor in fact originally include
planetary 
reduction gearing?
 
Ken W7EKB
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