Re: Tesla first start up problems. (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Sun, 10 Dec 2006 21:41:19 -0800 (PST)
From: Mike <megavolts61@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Tesla first start up problems. (fwd)

Trevor,
     I think you need to drink some more beer.  I crunched the numbers
kinda quick...I don't know quite enough about your coil, but 22 g wire
seemed to be about right for the number of turns for your secondary....and
I just made an assumption about your topload being a 4" by 12"  toroid...  
but for 14 turns on the primary for that, my spreadsheet(that has always
done me very well)  says you need about twice the capacitance that you are
using to be in tune.  Wanna talk to me offlist....my email is
megavolts61@xxxxxxxxxx
   
   
      >Hi Guys,
>      >
>      >I am new to this mailing list but I was hoping that someone 
might be 
> able to
>      >help me out with some problems I am having with my newly built 
tesla 
> coil.
>      >
>      >A rough spec of my coil is as follows,
>      >
>      >15KV 30ma NST
>      >14 turns on the primary, 1/4in copper tubing spaced at 1/4in
>      >6 inch diameter secondary, 24inches of windings, approx. 900 
turns.
>      >4 inch topload made from aluminum tubing
>      >Beer Bottle / salt water cap. 12 bottles, approx 0.1uF
>      >
>      >I checked and double checked everything and then decided to run 
it 
> outside
>      >at night.  The spark gap was sparking with a considerable 
amount of 
> power
>      >however that was all that was happening.
>      >
>      >I took the top load off at one point and left just the end of 
the 
> secondary
>      >winding sticking up.  When I did this the end of the wire had a 
> slight
>      >corona and about a 1/4 inch spark emitting from it.
>      >
>      >There were no coronas in the beer bottle cap even though I 
didnt 
> suppress it
>      >with oil yet.
>      >
>      >I tried tuning it and tried running it on about every turn of 
the 
> primary.
>      >It just seemed to be really lacking in power.
>      >
>      >Any advice would be most helpful.  I would love to get this 
coil 
> going!
>      >
>      >Kind regards,
>      >
>      >Trevor
>      >
>   

 
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