Re: Unpotting a France 12/30 ++

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: gary350@xxxxxxxxxxxxx

Put the neon in the kitchen oven 150 deg for 
about 1 hour.  Turn the heat up 25 deg every 15 
minutes until the tar melts.  If you do not over 
heat the tar it will not smoke or boil 
over.  Pour out the liquid tar clean the 
transformer in fuel oil.  Soak in fuel oil about 
1 week all the tar will come right off no work no 
effort.  If you plan to reuse the tar mix in 
about 50% high voltage oil with the tar and pour 
it back over the neon in the same case.  Unpot 
the neon remove your shunts and test it to see 
how many micro amps you are getting.  Make sure 
the secondary coils are located in peek output 
location.  If you slide the coil left and right 
on the metal core and watch the VOM output 
reading you will see the amps go up and down with 
the location of the coils.  Put the neon in a 
tank of High voltage oil it will make it almost 
bullet proof.  The oil acts like a cooling system 
too.   Make a plexoglass box for your neon and HV oil.




-----Original Message-----
>From: Tesla list <tesla@xxxxxxxxxx>
>Sent: Feb 28, 2007 12:08 AM
>To: tesla@xxxxxxxxxx
>Subject: Unpotting a France 12/30
>
>Original poster: "Jim Mora" <jmora@xxxxxxxxxxx>
>
>Hello,
>
>I have a couple of France 12/30Â?s. I want to
>un-pot one of them (some of the tar is cracked
>and likely leaky) and remove a few shunts to make
>a cap charger with a 5x multiplier. A newer 15/60
>works just fine with some serious humming­ fast
>and weighs three times the France! I am wondering
>if I can keep the France in the original tank and
>carefully heat it in a gas powered BBQ. Ideally,
>I would like to pour molten tar out and soak the
>tranny in diesel, or gasoline to dissolve the
>rest. I guess I will have to remove the core to
>knock out some shunts and hopefully be able to reconnect the HV bushings.
>
>If I can leave it in the original tank, I would
>melt some paraffin and Vaseline together and
>repot it in that. Hopefully I can squeeze 40 or
>50 ma out of it and current limit the cap input
>which would likely be just right. I know this is
>a well covered thread; but, has anyone
>successfully done this using a similar method? I
>would be open to mineral oil which probably sinks
>away the heat better, but the on time should be 
no more than a couple minutes.
>
>Thanks Much,
>Jim Mora
>
>