"Your Basic Coil" As per Tesla

[BroMikey]

New Board Talk for beginners.


https://www.youtube.com/watch?v=46UrPi-rTsE

[BroMikey]

Here's some basic info for you all. I have said this MANY times. EVERY COIL will speed up under load at the correct frequency. If it doesn't speed up under load, the RPM isn't high enough, or one of the other variables I have talked about is out of whack.

If I am not mistaken, Wantomake has a coil on his machine that has 2400 feet of #23 wire on it. He is using the same size rotor as I am with the same size magnets, the same number of magnets on the rotor and spaced the same distance apart.

He was able to achieve SUUL (speed up under load) at about 2,000 rpm according to my memory (which isn't that great, but he can verify.)

So our setup is the same EXCEPT for our coils. My coil, which is the same bobbin as his, with the same core and the same 2400 feet of #23 wire on it requires 2,800 rpm to achieve SUUL. Why does my coil require 800 rpm MORE? Is he better looking than me? Is he cheating?

My coil has 3 strands each 800 feet long. His coil has 12 strands each 200 feet long with 3 groups of four wires. The four wires within the group are connected in series. Wires in parallel connected in series (as Tesla states) give you more capacitance, and lower the frequency (or rpm) needed to achieve SUUL.

From the outside both coils appear to have 3 wires in parallel coming off them, but the reality is much different, as are the results.

Could his coil achieve SUUL at an even LOWER rpm? Certainly. Wire two groups of six strands in series, or better yet, wire all 12 strands in series.

But remember, the LONGER the wire, the more voltage. The more wires in parallel, the more AMPS. It is all about coil design and what you are trying to achieve.

I told Wantomake to use 12 strands because 12 is divisible by 1,2,3,4 and12. That gives you FIVE possible combinations of wires in series and parallel to experiment with.

24 strands gives you one more option since it is also divisible by 8. (5 total options)
30 is divisible by 5, 10, and 15, but not by 8 or 12 (7 total options)

More than that, the number of strands is almost unworkable unless you have a pro coil winding machine. But you get the idea. You WANT options. I thought 12 strands was a good number for people to experiment with, and if you have to put all the strands in series to get SUUL, at least you can DO it.

If you start with 12 strands in series on a bobbin with 2400 feet of #23, and it does not speed up under load, you have a problem. Your motor is just too SLOW. Once you have seen SUUL, you can start reducing the length of the strands by running more strands in parallel.

That's about all you are going to get from me on the subject. My philosophy is that if you don't build it yourself, you get exactly what you deserve.

That is a 48 ohm coil using number #23 wire and 2400 feet (3-800 strands)

Mine sped up under load (totally diff rig) more and more at 3000rpm's
using number #29 wire at 175' strands any where from 12-18 strands
came out to an ohm reading of

Well it went like this 8 strands at the null where no acceleration or
deceleration took place is 175strand X 8 in series = 1400' = 113 ohms

Next at 3000 rpm's and 12 strands acceleration dropped the input
watts dramatically sped up the rotor around 300 or more RPM's for
a net ohm reading of 170 ohms

Next reading went like this. At 18 strands or 175 each the rotor speed
went way way up to some gOd aweful rpm enough to make a person step
back dropping the input wattage from 210wats (an old dishwasher mtr)
all of the way down to 167 watts while delivering real power out of the coil
where the ohms read 255 ohms.

Everything I am doing is completely different from all other experimenter
at least much of the mechanical intentionally. Boring isn't it?

Just keep saying it doesn't work and playing with your keyboards, then
to validate yourself go buy more school books to prove how wrong I am.

No one is doing what I am doing, and that pisses some people off. Too bad.