Putting Drive Coil on My Turbo Drive Concept for Counter Rotator

Hook

I wanted to test putting drive coil right onto this counter-rotating rig and see if the caps could feed extra drive coils as a turbo drive once everything was spinning.

Watch this experiment

I spun the outer stator by hand at first, then let the coils take over. At 2.5 volts the yellow LED lit while the clear one waited for more voltage. By 3.6 volts both were bright and the outer was flying. I killed the power and the LEDs kept glowing from the charged caps—yellow one lasted longest.

What you'll learn

How mutual inductance works between stacked coils at 3/4 inch gap, why different LEDs need different voltages, and that capacitors can keep lights on for seconds after you cut input power. Also, why a turbo drive concept makes sense here but true looping does not.

From the bench

Two and a half volts going in. Added two 12 V LEDs (yellow and clear) to the end of the six coils. Outer stator has six magnets that are south facing inward making it monopole. Three drive coils sit on top of the six every other one. Caps are 4700 µF × 3 in parallel—roughly 12 to 14 thousand microfarads at 25 volts. Current around 70–80 mA at 4.5 V. Slip ring makes on/off and speed control easy without sticking my hand in.

How it works / what we changed

The drive coils induce into the pickups and the layered arrangement creates mutual inductance. That charges the caps fast. When I cut power the stored energy in the caps keeps the LEDs on. Yellow LED has a lower threshold so it stays lit longer. I’m thinking of adding three more drive coils fed from those caps so they act as a turbo drive while the main system runs. It won’t loop forever—physics still requires a source—but it should give extra push for maybe 10 seconds after you kill the supply.

Magnet is

The magnet is south facing inward on all six positions on the outer stator. That gives a monopole setup. Even at 3/4 inch away the coil still sees strong influence and we get massive induction. The monopole arrangement seems to help the mutual inductance between the stacked coils.

Magnet charger

I didn’t build or use a magnet charger in this test. The magnets are already charged neodymium types arranged as monopole south inward. The discussion stayed on using the generated induction to charge caps instead of charging magnets themselves. If I ever need to refresh them I’ll look at a proper magnet charger circuit, but that wasn’t part of today’s bench work.

Builder checklist

• Start at 2.5 V and watch LED thresholds
• Confirm all six magnets are south facing inward for monopole action
• Stack three drive coils over six pickups every other position
• Use 4700 µF × 3 caps in parallel (25 V rating)
• Add slip ring for easy control while testing
• Measure current (expect ~70–80 mA at 4.5 V)
• Test extra drive coils fed from caps as turbo drive

Troubleshooting

LEDs not lighting evenly? Different forward voltages—yellow one turns on sooner than clear. No induction? Check coil spacing (3/4 inch worked here) and make sure magnets are all south inward. Caps not holding charge long enough? Verify total capacitance and that the system is actually charging them while running. Outer stator slow to spin? Increase voltage slowly up to 5 V and give it a starting spin.

Safety

Keep voltages low (under 6 V in these tests). Capacitors stay charged after power off—discharge them safely before touching. Rotating parts can grab fingers; use a slip ring or remote control instead of reaching in. No high voltage or lithium batteries in this run so risk is low but still treat spinning magnets and coils with respect.

FAQ

How long do the LEDs stay lit after power off? Yellow one lasts noticeably longer than the clear; total around 10 seconds or so depending on charge.

Is this a free energy device? No. We still need a source. The caps store energy but it eventually runs down.

Why south facing inward? Creates a monopole effect that seems to help the mutual inductance in this counter rotator layout.

Can the caps run another drive coil? Probably while the main system is on. After shutdown it will only work for a short time.

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Watch this experiment on YouTube

• ▶ Watch full on YouTube