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4hv.org :: Forums :: Tesla Coils
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Bud Mohrman 10' tesla coil.................12'strike

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Bud
Mon Aug 24 2015, 07:03PM
Bud Registered Member #54930 Joined: Tue Apr 28 2015, 01:38PM
Location: pittsfield ohio
Posts: 25
Hi All, Just got my big tesla coil going. Thought you might like to see some video and a picture of a 12' strike. Pretty cool stuff. Here is a link to the youtube video.....



Bud
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Sulaiman
Mon Aug 24 2015, 09:08PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
very nice !

This is fantastic for a third post, well done.
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Hazmatt_(The Underdog)
Tue Aug 25 2015, 03:08AM
Hazmatt_(The Underdog) Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
Wow Bud..that was great!

What's your input KVA?
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Mads Barnkob
Tue Aug 25 2015, 06:43AM
Mads Barnkob Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
Vicious looking coil, are you using a break out point? If you already are, use a longer to avoid all those strikes to the ground rail at the primary coil.

I edited your link to be a embedded youtube video instead :)
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Bud
Wed Aug 26 2015, 11:29AM
Bud Registered Member #54930 Joined: Tue Apr 28 2015, 01:38PM
Location: pittsfield ohio
Posts: 25
Hi, I guess I will answer two questions here. The power is provided by 240v to a 85 amp variac....then thru the ballast of 6.35mh to a 14,400v pole transformer which is 10kva.....then out to a rotary spark gap which I built. A copy of ed wingates design.

The toroid has a 2.5" screw sticking out of the side which acts as a breakout point. Sounds like it needs to be longer?

I also have two more videos that were recently uploaded that go into greater detail of the construction. Link2 Link2

Building this coil was really easy once I put my mind to it. I never figured it would look this good. Even surprises me!

Bud
1440588558 54930 FT172755 12 Strike Tesla Coil
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Graham Armitage
Thu Aug 27 2015, 06:05PM
Graham Armitage Registered Member #6038 Joined: Mon Aug 06 2012, 11:31AM
Location: Salado, TX
Posts: 248
Very cool! Thanks for sharing. I bet that is loud - neighbors must love you wink
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Bud
Sun Aug 30 2015, 05:33PM
Bud Registered Member #54930 Joined: Tue Apr 28 2015, 01:38PM
Location: pittsfield ohio
Posts: 25
Hi Graham, I am fortunate that my neighbors are right next door to my lot, however, they are 1000' from the barn. I live almost 1/4 mile of the road and they are close to the road. Barb and I have it very private here with woods all around.

Bud
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dexter
Mon Aug 31 2015, 09:49AM
dexter Registered Member #42796 Joined: Mon Jan 13 2014, 06:34PM
Location:
Posts: 195
nice coil :)

i've seen no info about the primary tank cap
can you provide some info about it?
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Bud
Wed Sept 09 2015, 07:19PM
Bud Registered Member #54930 Joined: Tue Apr 28 2015, 01:38PM
Location: pittsfield ohio
Posts: 25
Here are the specs for the coil:

Link2 running (3rd light)

Link2 construction#1

Link2 construction #2

53KHZ .14UF 14,400v pri 83 amp variac running on ~50 amp. Rotary spark gap a copy of ed wingates design. 6.15mh ballasting by two paralleled Lincoln welders on the primary side 56" dia toroid 14.25 minor dia. 12.75 dia sec with #18 asynchronous rotary spark gap with 6 contacts @ 5000 rpm

13' strike so far this rig even impresses me!

Bud

edit:I always forget about the cap.......14uf @ 40,000v

Bud
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