A good toroid can be made with a motorcycle rim.
6” semi-rigid dryer vent taped around it… with a 12kV 90mA power supply I was getting 30” sparks on a 4” secondary.
> On Feb 23, 2018, at 6:19 AM, Thad Howard <coils@xxxxxxxxx> wrote:
>
> I sold that
>
> Sent from my iPhone
>
>> On Feb 22, 2018, at 1:01 PM, Aron Koscho <kc5uto@xxxxxxxxx> wrote:
>>
>> Hi Thad,
>>
>> Did you ever sell your toroid?
>>
>> Thanks,
>> Aron
>>
>>> On Wed, Jan 24, 2018 at 11:45 AM, <coils@xxxxxxxxx> wrote:
>>>
>>> Hi Group,
>>>
>>> I have a large commercially made torroid for sale. Its 7"minor x
>>> 30"major. It has some scratches and a small ding that not very
>>> offensive. It could be cleaned up nice with some elbow grease.
>>>
>>> I think it weighs about 20lbs, i will weigh it for those interested.
>>> Nice top for a professional looking coil. I want $200 plus shipping.
>>>
>>> contact me off list for pics and info. Thanks a bunch!
>>>
>>> -Thad
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