Hi Joshua,
Well, me I have some issues with how you have grounded now...you have a
case of the coil circuit using 2 grounds from what you are saying.
Hopefully some others will chime in soon and possibly agree with me.
Probably reopening this "can of worms" now...
Me on my coil , I use RF ground on the NST.
Can not really help on winding myself...too busy with so many things...
maybe someone here will volunteer at a decent price...and possibly not.
Some commercial offerings I have seen in the past is not cheap at all for
secondaries!
Chris Reeland
Ladd Illinois USA
Sent from my Lenovo Tablet
On Tue, Nov 23, 2021, 7:52 PM Joshua Thomas <joshuafthomas@xxxxxxxxx> wrote:
> I haven't had the chance to change the wiring yet, but I have decided to
> have the NST grounded to mains earth. This seems to be the best option from
> among the available options.
>
> I've tried winding by hand and it was.... tedious. I may just lack the
> patience, but spending 4 hours carefully winding a coil is not my idea of a
> good time.
>
> > Your coil is running better with smaller toroid. Is this with all the
> primary tapped?
>
> I had adjusted the tapping several turns in when using the small toroid,
> based on some JavaTC calculations. It's hard to quantify how much longer
> the arcs were, but I would not say more than 10%. I need a function
> generator so that I can find the primary and secondary resonance
> frequencies, and adjust my tuning with better accuracy. Perhaps after
> Christmas....
>
> Joshua Thomas
>
>
> On Tue, Nov 23, 2021 at 8:08 PM Chris Reeland <chrisreeland@xxxxxxxxx>
> wrote:
>
>> 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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>>> > To unsubscribe send an email to tcml-leave@xxxxxxxxxxxxxxx
>>> >
>>> --
>>> Joshua Thomas
>>>
>>> My new email address is: joshuafthomas@xxxxxxxxx
>>> Please update your information if you have not already done so.
>>> _______________________________________________
>>> Tesla mailing list -- tcml@xxxxxxxxxxxxxxx
>>> To unsubscribe send an email to tcml-leave@xxxxxxxxxxxxxxx
>>>
>>
>
> --
> Joshua Thomas
>
> My new email address is: joshuafthomas@xxxxxxxxx
> Please update your information if you have not already done so.
>