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Re: oil dielectric

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

Paul: to answer your stainless use question. No..stainless is conductive and
will act as a shorted turn. The stainless will absorbe all the induced
current and leave nothing. Non nagnetic stainless is magnetic resistant and
will still short out your magnetic fast pulse that the primary tries to
induce  in it.
   Robert  H  

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Sat, 18 May 2002 12:27:24 -0600
> To: tesla-at-pupman-dot-com
> Subject: Re: oil dielectric
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Sat, 18 May 2002 12:51:20 -0600
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Xyme3-at-aol-dot-com>
> In a message dated 05/15/2002 6:11:42 AM Pacific Daylight Time,
> tesla-at-pupman-dot-com writes:
>> Hi Paul,
>> I suspect you are correct. I have been meaning to ask,  what to construct
>> the
>> main support colum out of.
>> I use the same PVC schedule 40 pipe I use to wind a regular coil.  When the
>> coil I make is finished, there is oil over the windings, but not in the
>> center of the coil.  The center of the coil is air.  By putting one PVC pipe
>> inside of another I have made a jacket.  The outer pipe is held into place
>> by schedule 40 end caps that have a hole in the center to slide over the
>> inner pipe.  The joints and cracks are sealed with a good all purpose
>> sealant.  Where possible, regular pipe cement is used.
>> I've read that the best core for an air core coil is "air."  Tesla mentioned
>> that a core of paraffin or oil had somewhat of less performance than an air
>> coil.
>>> Finer wire to produce more turns?
>> Finer wire so I can get more turns per inch.  Since the solenoid will be six
>> times the wire length of the flat spiral it will be more efficient if the
>> length of the windings can be reduced.  I want to find the maximum voltage I
>> can get with this 250 watt power supply.
>> Dave
> Thanks for this information. I had not thought of concentric pvc pipes.
> I have a type of ceramic caulk i can use, I think i could pour  between
> the walls of the concentric pipes and then remove the outer pvc pipe.
> This would give a ceramic surface to wind on. The maker of the ceramic
> caulk recommends drying at high temperatures.
> On a slightly different subject:
> If the inside pipe
> were stainless steel, covered with ceramic both inside and out,
> do you think it would present a problem with the action of the coil?
> Paul. 
> (PS, non-magnetic stainless)