Re: Secondary catastrophe

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "BunnyKiller" <bunikllr-at-bellsouth-dot-net> 

go for the shorter secondary....    4.5" at 17" winding is decient for a 12 
- 30 nst

Scot D



Tesla list wrote:

>Original poster: "andy g" <aggniu-at-hotmail-dot-com>
>Hello again,
>
>I may be asking a question that has already been answered and that I think 
>I might already know the question to, but I will fire away anyhow.  I am 
>still in the process of building my first coil, and the other night I 
>started working on the secondary coil.  I am using a piece of 4"(nominal) 
>4.5"(O.D.) PVC for the form (I know it is quite lossy, but I am a poor 
>college student) wound with 22AWG magnet wire.
>At any rate, I finally got the thing done and was going to coat it with 
>poly the next morning as I didn't have any on hand, and I came to find 
>after letting it sit for a while I had spots where the wire wasn't 
>completely flat on the form (kind bunched up where there wasn't enough 
>space between windings/there was too much wire and nowhere for it to 
>go).  So, you can all see where this is going, I ended up getting a mess 
>of doubled over windings and a hell of a headache at about 1:00AM.  By the 
>time I went to sleep, the gosh darn thing looked like a backlashed fishing 
>reel.  The good news is that I saved all but the last 4" of windings.  My 
>question is, should I take the time to try to do a splice (rewinding is 
>out of the question, I don't have enough wire to redo the entire thing)? 
>Or, should I cut my losses and settle for a shorter than expected 
>secondary?  If I do use a shorter secondary, what sort of performance 
>change could I expect?
>Originally, it was going to be 21" of windings.  Now, it is a shade over 
>17" of good windings.  If it would be possible to splice, what is the 
>appropriate way to approach such a thing to make it perform 
>optimally?  For what it is worth, at this point I am locked into using a 
>12KV 30mA NST for power, otherwise, no values are definite.
>
>_
>
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