Look closely at the location the racing sparks occurred. You may have damaged the coating, beyond just visible carbon tracking. I had to remove a few of my lower turns due to damage, a long time ago.
On Saturday, October 28, 2017, 9:18:46 PM EDT, Terry <terry@xxxxxxxxxx> wrote:
Hi Terry,
It does sound like over coupling. Is tuning proper, that is the same
primary tap point as years ago? Maybe need to re-tune?
Is the arc length with "Barbed" the same as it was ten years ago.
Might try cleaning the secondary but not sure if that will help.
Happy coiling to you.
From another Terry - Terry Leonard
On 10/28/2017 2:12 PM, Terry Oxandale wrote:
> It's been a long time since I was more active on this list. I never was a
> "technical" enthusiast, so being I've had the coil in storage for probably
> 10 years, and have forgotten more than I remember about coiling. I'd like to
> tap the group for some help or advice please.
>
> My coil appears to operate as I remember it did, as long as I've got a sharp
> pointed barb sticking out the side of the toroid to promote a discharge.
> When I remove the barb to get a normal toroial discharge, I get racing
> sparks along the secondary, and nothing out of the toroid, all for the same
> power setting as the "barbed" setup (2kva). Thus I separated the secondary
> from the primary in terms of vertical distance to lower any excessive
> coupling (shooting in the dark here), but still racing arcs along the
> secondary.
>
> Any ideas on the huge difference (or lack of performance) between "barbed"
> and "non-barbed? No component changes have been made since a decade ago when
> it all worked great, and both configurations performing equally well.
>
> Terry
>
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>
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