[TCML] Question on Coil with Missing Turns

[Carl Noggle]

You can also just cut the damaged turns back 1/2 inch or so, then drill 
a little hole through the form.  Then leave a long enough piece on the 
good turns to feed them through the hole and solder them on the inside 
of the coil form (relatively field-free region).  Then cover it all with 
epoxy.  It's ugly, but only in a small spot.




> No, I didn't have to change a thing.
>
> Hank
>
> -----Original Message-----
> From: tesla-bounces at pupman.com [mailto:tesla-bounces at pupman.com] On Behalf
> Of James Zimmerschied
> Sent: Friday, August 05, 2011 8:13 PM
> To: Tesla
> Subject: RE: [TCML] Question on Coil with Missing Turns
>
>
> Hank,
> thanks for the info on your experience with the missing turns. Do you recall
> if the primary tuning point changed due to the missing turns?
> Jim
>
>
>> From: dr.hankenstein at earthlink.net
>> To: tesla at pupman.com
>> Subject: RE: [TCML] Question on Coil with Missing Turns
>> Date: Sun, 31 Jul 2011 06:34:59 -0700
>>
>> Jim,
>>
>> I would tend to think you may have nothing to worry about for this reason:
>> About three years ago, while setting up Zotzilla, which is a 20" by 42"
> coil
>> with a 5 foot corona ring, I inadvertently connected the primary to the
>> wrong tap. During the subsequent full power run, the coil flashed over in
>> two places which can be seen by the "splicing tape" on the following
> photo:
>> http://drsparksite.com/images/wwt2011/101.jpg Several turns were removed,
>> the carbon was cleaned and the wire was carefully spliced back together.
>> Oddly enough, the coil has never run better. It produces 10 footers with
> an
>> input power of 240 volts, 45 amps and 7.5kva using a 5kva pole xfmr. I
> have
>> purchased new wire, BUT, since it's running so good, I'm not sure if I
>> really want to rewind it. I'm worried that a rewind would ruin the
>> performance, although the coil would "look" good again.
>>
>> Anyway, that's my experience with "missing turns"
>>
>> Hank
>>
>> -----Original Message-----
>> From: tesla-bounces at pupman.com [mailto:tesla-bounces at pupman.com] On Behalf
>> Of James Zimmerschied
>> Sent: Saturday, July 30, 2011 6:58 PM
>> To: Tesla
>> Subject: [TCML] Question on Coil with Missing Turns
>>
>>
>> I have recently obtained a 12" diameter by 45" coil with about 700 turns
> of
>> #18 wire. It had sustained damage from previous operation and my friend
>> removed the burnt turns and spliced it. There is about six inches of coil
>> below the gap which is about 1/2" wide. The remaining 39" is above the
> gap.
>> I am wondering if having two coils in series create any significant change
>> in the coil characteristics? I have run this coil and don't get any corona
>> at the gap since it was well spliced and covered with epoxy.
>>
>> Jim Zimmerschied
>> _______________________________________________
>> Tesla mailing list
>> Tesla at pupman.com
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla at pupman.com
>> http://www.pupman.com/mailman/listinfo/tesla
>
> _______________________________________________
> Tesla mailing list
> Tesla at pupman.com
> http://www.pupman.com/mailman/listinfo/tesla
>
> _______________________________________________
> Tesla mailing list
> Tesla at pupman.com
> http://www.pupman.com/mailman/listinfo/tesla