Hi Joshua,
You have not mentioned it...but I take it you corrected the NST centered
tapped RF ground issue?
Can not really help you on toroid construction...it took me several years
to collect what I have in spun toroids on the used/NOS that I have acquired
at decent prices.
I can not ever justify buying direct brand new. They get extremely
expensive when getting large. I have been lucky on most of the prices I
have paid.
On your secondary, I would suggest winding by hand... your secondary is not
really big at all...it doesn't take as long as you would think...just a
little patience.
Your coil is running better with smaller toroid. Is this with all the
primary tapped?
If so, your bigger toroid does not work good because you are out of primary
tuning available.
Chris Reeland
Ladd Illinois USA
Sent from my Lenovo Tablet
On Tue, Nov 23, 2021, 6:33 PM Joshua Thomas <joshuafthomas@xxxxxxxxx> wrote:
> Thank you!
>
> My topload is covered with copper foil. The base is dryer tube. While
> cheap, it is difficult to get a strongly smooth surface from it. I am
> jealous of those who can get the smooth spun-aluminum toroids.
>
> On the topic, can anyone recommend a service that will create secondary
> coils to specification? I am fairly bad at this and itâ??s one area I would
> be willing to spend a little money.
>
> Joshua Thomas
>
> On Tue, Nov 23, 2021 at 10:20 AM <pupman.com@xxxxxxxxxxxxxxxxxxx> wrote:
>
> > Hi Joshua,
> >
> > The arcs look and sound great in this video. They grow and move vs.
> > appear once and vanish. It does looks like there may be too many
> > breakout/sharp points on the toroid though, and lots of energy is being
> > lost. A light wrap of foil might smooth things out enough to allow
> > fewer, but longer and more developed streamers.
> >
> >
> > On 11/21/2021 4:03 PM, Joshua Thomas wrote:
> >
> > <content trimmed>
> > > These were used with 3 between each HV rail and RF ground. The caps
> > caught
> > > on fire after short use. You can see video of that event here:
> > > https://youtube.com/shorts/Sx_lHwjR_bs?feature=share
> > >
> > > (I should likely have shut this down sooner)
> > <content trimmed>
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> --
> Joshua Thomas
>
> My new email address is: joshuafthomas@xxxxxxxxx
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