Magnetic Overunity Motor Design

[travin69]

Tinsel:

I wound two seperate wires simultaneously parallel to each other.  What I was led to believe (stupid me) was that if I powered them in parallel, I could add each coils windings together and halve the current.  BKGD: Each coil is 200 ft of 26AWG wire and makes about 1100 turns or so on the coil.  This in fact is false and to double the ampere turns, i have to double the amperage.  Since I am trying to keep my I2R losses to a min, I am just going to wind them IAW Tesla's patent.  Currently, they are about 0.925" long.  I want to get them down under 0.75" if possible.  I have heard that as the windings get further away from the core, the outer windings aren't as coupled to the core.  I have not seen this actually printed in any of the books I have read. 

After some recent research, I have discovered that some coils are wound with different gauge wire and wound more like a transformer with windings on top of windings.  I would like to put 22 AWG wire on first, say 300 turns, then finish it off with 26 AWG wire wound on top, like 700 turns.  If I am not mistaken, the outer coil's magnetic field should concentrate the inner field and result in a more uniform magnetic field.  This method is done at many of the research labs to get magnetic fields in excess of 30 Teslas.

I am a nuclear chemist/engineer with a lot of experience in steam powered engines/turbines.  Steam power facinates me and it is a shame steam powered cars are dead and gone.  The swash plate steam engine is very effiecient at converting linear to rotary motion because the connecting rod is basically at the ideal torque angle during the entire stroke, plus, it is easy to engineer and build.  I am actually using an updated swashplate design.  It really is cool looking and spins easily by hand.  I can't wait to get it finished.  Shooting for this weekend but may be next week.  I am super stoked.  The new magnets I got are really strong and then repel nicely, even at distances over 2".

[TinselKoala]

@trav: it sounds like you have things well in hand and understand the differences I mentioned. Great!
As I read your description I wondered something that I haven't tried: what about an intermediate core, in other words, you have a central core, then you wind your coil around that but as it gets larger you get further away... so when you are halfway out, bring the wire out to the side and then wrap a couple layers of soft iron ribbon around in place of the windings, then resume winding over this with wire. This should help concentrate the outer fields closer into the "sweet spot". I've never tried winding a coil like this... it might be interesting to do.

[travin69]

Tinsel,

I thought of that as well, it is an interesting idea.  I also thought about using copper clad soft steel wire and just wind a coil without a core, as the core is basically built in.  In another thread on here, it was suggested that I wind windings in a typewriter fashion.

Thanks

[travin69]

Update #3:

Didn't get much done this past weekend.  Got goatroped into helping a friend paint and lost the entire weekend.

Did some testing tonight and confirmed that by placing a piece of metal on one end of a magnet, the opposite pole will repel/attract more.  It increased the repelling strength of two 1x1 N42 magnets by just over 1 lbf at 1".  That is an increase of 25% (went from 3 lbf to 4lbf).  Additionally, the pole with the metal piece attached had basically no repulsion/attraction.

Did some tests with my super awesome core material vs 1018 CRS.  Much to my dismay, the CRS performed just as well as the extremely expensive Fe core material.  Needless to say, I am rather preturbed.  I had high hopes for this stuff.  Going to try it in the electromagnet to compare it's abilities in an electromagnet (the tests I did were using the 1x1 N42 magnets to supply the magnetic field).

Got a lot done over the last 2 days.  Completed the piston builds, alignment cylinders, and much more that would be pointless to list here.  I am getting close to a working machine.  I have 2 more coils to wind and the rest of the stuff is menial.  They will be wound using the barbell design in an attempt to determine that design's effectiveness.

Hope to have this thing running soon so I can take some video and test the output via a pony break.  I am guardedly optimistic at this point.  If I achieve overunity (here's hoping), I will order the dc gen for a load test.

[travin69]

Update #4:

Very productive this weekend.  I have entirely changed the motor design back to a rotary style motor.  Also moved to an attraction vice repulsion set up.  Rebuilt motor casing.  Hooked up the coil I use to capture flyback voltage from main drive coil.

Purchased a digital RPM meter and digital 100lb scale.  Setting up prony break tonight for some load tests.

Results:

Excellent so far.  Motor runs on 24-25 volts pulsed dc very well.  I am using a time wheel for the pulse signal.  Duty cycle is 50%.  No load current at 25VDC is 0.3amps.  RPM is 1350.  Current remains independent of load and is based solely on the voltage applied.  Tried using a smaller voltage but motor just doesn't run at 12VDC.

Tonight's Events:

I built a variable DC power supply that can supply up to 24 volts DC and 2 amps.  Going to do some RPM tests at different voltages to see if I can lower my voltage without lowering my rpm too much.  I suspect there is a voltage point between 12VDC and 24VDC that the motor begins to operate at full speed (just a hypothesis at this point).  If not, no big loss.

Set up a prony brake for some load tests.  I hope to make my first video tonight as well.  Needless to say, I am very excited.

Daniel