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Forums
4hv.org :: Forums :: Tesla Coils
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Secondary help

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skyler
Thu Jan 30 2014, 04:58AM Print
skyler Registered Member #42712 Joined: Fri Jan 10 2014, 01:21AM
Location:
Posts: 21
We are working on a quad MOT tesla coil, and currently stuck on secondary.

Stuff I have
•12 inch diameter by 4 foot tall cement cardboard stuff (don't remember what it is called, but is found at home depot)
•5 foot tall 4 inch diameter PVC pipe (probably can't use that because of the bad ratio)
•94 ohms (calculated to be like 4.7 ish or 3500 feet) of 24 gauge magnet wire.

Questions

•How many turns aprox do I need up the coil?

•Is it enough wire? With fishing line beside it? Without?

•Should I use fishing line? If so, what size and how much?

•Should we build something to automatically wind the secondary?
If so, how, and what RPM would be wanted?

Thanks for the help, I just am a bit confused and we are working on it for my club at high school.
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redruM69
Thu Jan 30 2014, 07:38AM
redruM69 Registered Member #31557 Joined: Tue Aug 06 2013, 02:38AM
Location:
Posts: 58
Did you read the replies in the last thread you started?

Things that come to mind:

24awg is too thin for a big 12" coil
Quad MOT's is total overkill for a 4" coil.

If you use the 4" pvc, and cut it down to about 20-24", it would work fine. 4x24" = 1110 feet, and 1060 turns.
If you use the 12" form, you could only get about 25" out of it, and would run out of wire. Would not work well.

Never heard of spacing with fishing wire... I suppose its possible.

If you wind the 4", you can wind it in your lap in a couple of hours in front of the TV.
The 12" would need a stand, and a 2nd pair of hands to assist.
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Mads Barnkob
Thu Jan 30 2014, 07:46AM
Mads Barnkob Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
Part II: Posting
G. Avoid double-posting (FYI: double posting is posting twice in a row in a thread, without allowing any replies in between). Double posting just to get a topic marked as new is a no-no. Every topic deserves a chance. If yours slips into obscurity, its chance came and went. If 48 hours have elapsed, and you have some new information to add, you may double post. This is the only exception, there are no other exceptions! Posting an identical or nearly identical question in two individual threads is also considered double posting.

If you asked your questions in your original thread, people would also know the context of your question and would be able to help you with a more in depth answer.

First thread about this Tesla coil: Link2
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