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Re: Big Coil

Original poster: "david baehr" <dfb25@xxxxxxxxxxx>

80" sparks from a 4.5" coil !!! WOW, could you give me a few specs on your coil ? I'm gettin' just over 48" with my 4" coil,....,,,,Hmm, thinking back, my very first coil was about 4" dia. , pvc wire on an ol' carpet roll tube with glass plate caps and single spark gap , discharge was about 4" , Look how far we have come!!

>From: "Tesla list" <tesla@xxxxxxxxxx>
>To: tesla@xxxxxxxxxx
>Subject: Re: Big Coil
>Date: Mon, 24 Jan 2005 17:21:45 -0700
>Original poster: Esondrmn@xxxxxxx
>In a message dated 1/24/05 7:05:30 AM Pacific Standard Time,
>tesla@xxxxxxxxxx writes:
>Hi All,
>I fried my 4.5" coil last night, I was getting 80" strikes at 14Kv
>:). But
>you all know how it goes from there---MORE,MORE,MORE. So I flipped
>switch and fed it 24Kv. It went up like a 4th of July sparkler ;(
>Well now to build a \\BIG// coil, I have a
>pig, 2 max-caps 45KV/30nf each. I want as large as the PS can
>handle. So any
>Thanks for the input.
>Ken J.
>Wow, that is a lot of power for a 4.5" secondary. 80" is good
>performance for that size coil. The most power I have fed my 6"
>coil is about 7.5 kva - and I don't think it can take much more.
>With the power supply you have available, I don't think a 10" or 12"
>secondary would be out of line at all.
>So, did the secondary develop racing sparks and burn up?
>Ed Sonderman