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Forums
4hv.org :: Forums :: High Voltage
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Giant toroids

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Microwatt
Tue Feb 15 2011, 06:29PM Print
Microwatt Registered Member #3282 Joined: Wed Oct 06 2010, 05:01PM
Location:
Posts: 224
has anybody ever thought about buying a huge truck inner tube off of ebay inflating it and painting it with conductive paint or aluminum foil tape? these iner tubes are huge and very cheap you could make one for a total cost of 80 dollars including the cost of the paint. megavolt ES charges are within possibilty
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Dr. ISOTOP
Tue Feb 15 2011, 06:46PM
Dr. ISOTOP Registered Member #2919 Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
I remember tesladownunder doing something using an inner tube covered with chicken wire, but the resulting corona ate away the rubber frown
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Microwatt
Tue Feb 15 2011, 06:47PM
Microwatt Registered Member #3282 Joined: Wed Oct 06 2010, 05:01PM
Location:
Posts: 224
hence painting it with silver or foil.
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Martin King
Tue Feb 15 2011, 07:52PM
Martin King Registered Member #3040 Joined: Tue Jul 27 2010, 03:15PM
Location: South of London. UK
Posts: 237
It's been discussed here :-

Link2

Martin.
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Patrick
Tue Feb 15 2011, 08:26PM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Read the above thread. Heres my idea, use expanding polyurethane foam the 2 part one, then fill through the shrader vlave (by removing it) the let it expand to inflate the tube, when its fully cured, cut the rubber tube off.

poof...instant light weight large toriod, cover surface to be conductive.
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Microwatt
Tue Feb 15 2011, 10:05PM
Microwatt Registered Member #3282 Joined: Wed Oct 06 2010, 05:01PM
Location:
Posts: 224
foam is expensive why not papermache the thing
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Sulaiman
Wed Feb 16 2011, 07:04PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
The largest toroid I've ever made was 4" aluminium ducting around a bicycle wheel - works great but looks a bit odd.

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