I crunched the numbers in Jim Murray's first Dynaflux presentation. Keeping in mind that he uses a solid metal rotor moving across a magnetic field creating extreme eddy currents, added with the inducted current creating even more eddy currents. Not to mention using input power to create the EMF, all the bearings and resistance, plus flux losses in the system. So lets put all that aside and just concentrate on if the input increase from unloaded to loaded broke the homeostasis of normal generators or transformers.
Unloaded, he was using 435 watts just to get the system going with no load.. When loaded, it jumped about 35 watts to about 470 watts. So we have a 35 watt increase of input. But His output was 40 watts. Which calculates to about a 12.5% reduction of back torque.
Normal generators have 100% back torque. His has 87.5%. It is my guess that the back torque was almost all from the eddy currents in the system. Even so- he still managed to decrease back torque contrary to known machines.
With the spiral magnet rotor, we can avoid most these eddy currents altogether.. The only eddys we face are from the output coil cores. And we can cut this further by using laminations. Or we could even avoid all eddy currents by using air core coils.
So all systems are a go.. My rotor is finally on the last leg of printing.. Hope it comes out nice!
Main magnets are in place! Almost broke my monitor when a magnet shot out like a pistol. The fields are super compressed like this. The magnetic bubble around this thing is INTENSE...
I'll Give it some time then do the motor magnets that go on that bottom circle. Don't want to get my ceramic bearings anywhere near uncured JB Super Weld.
Beefy axle stands are printing now. Everything is heavy infill- so probably won't have much more movement on it till tomorrow.
NICE!!!!
Now it's not as easy as spinning a spiral and slapping any old coil under it.. A coil's flux field has different intensity levels in different places. But there is a balance point where N is equal to S on opposite sides. Your spiral should also have balanced symmetry. The coils symmetry needs to match the rotors symmetry with respect to the coils orientation, length, poles, and symmetrical magnetic forces.
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Spins great, for the coil I would wind it on a tube slightly bigger diameter than the rotor.
Remove the leg at the small end to install.
You could also skew the windings on the tube so their slanted, might help might not?
Looking forward to your progress.
Thanks shylo
Hey Shylo,
The spiral can not go inside a tube coil. The magnetic field curves to the ratio of Pi - so it pulls away after passing which creates the movement at 9o degrees angle motion. The inside of a coil is also at Pi. So when we got no pull-away- we got no motion.
I've done my tests and unfortunately we have Rotor drag.. The Coming in side helps us on the first half and going out hurts us. The resistance is much greater than the assistance because the coil's magnetic field is strongest at the poles, and the going out side has to leave closer to the poles than the coming in side.
My next experiment will be rotating the spiral rotor and creating a rotating coil that are both in motion.
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The theory is this:
Your in a boat traveling in the same direction of the wind. And you are travelling exactly at the same speed of the wind. You will feel no wind. But Both the wind and boat are moving.
Regarding the Rotor.. We are getting the perpendicular motion, but the coil is stationary so we are still feeling the cross-wind. Causing drag. I suspect less drag than normal, but still a good degree of drag.
Now when the spiral coil is in motion identical to the rotor, I think we can cancel out the crosswind.
Coil is OK for now..
printing the gears now. Need to print the right bearing mounts for the coil next. Then need to do sliprings and brushes.
The plan changed!
I have all the parts for the rotating spiral build- but I thought of something I think will be even better. And much easier.. I need to get the trailing magnets away from the poles of the coil.. So I think I can do it another way.
The coil will wrap around the outside, then inside over the speed-bump. Now the Rotor goes in the coil..
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Now the coil's poles will be 90 degrees from the direction of rotation.. The coil's poles will be lined up with the blotch walls of the magnets.
This coil bobbin is a 32 hour print!... So no updates on this for a few days
It seems some do not understand the operation concept.
F = qv × B (The force F is always perpendicular to the direction of the magnetic field B)
In a visual aspect, lets say each magnet was a paint brush with red paint on it. While rotating 1 revolution, we will see the speedbump get painted red from top down in a smooth orderly fashion. Equivalent to swiping 1 paintbrush vertically but we accomplished it with horizontal motion.
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The entire circle of wire sees no induction or moving magnetic field because the magnets are travelling in line with the direction of the wire at equal distance away. Except when it passes the speedbump. The speedbump receives a varying intensity of magnetic field as each magnet passes the speedbump. And although the rotor is spinning horizontal, the direction of travel is vertical (only over the speedbump..)
Since the physical movement is 90 degrees from the perceived moving magnetic field, the coil projects it's magnetic force vertical while the motion that caused it is horizontal.
There is no problem with Lenz in this geometry with regards to the magnet that is inducting. The problem comes from the magnets AFTER they have done their job and are past the speedbump. If the coil is outside the rotor- the magnets that aren't inducing get attracted or repelled from the coil's pole. But it is now not linked to induction anymore, so it should be able to be corrected.
So I am designing the coil so that it's poles are in line with the blotch walls of the magnets and putting the coil's poles 90 degrees offset from the magnets. So the rotor spins inside the coil.
I looked at all geometries for the way to make this thing mimic a full magnet flipping 2 polarities. One polarity going up, the other down. On both sides and opposite from each-other.
I want to use ONE coil with a Metal core. And I want the coil's exact center to be aligned exactly between all magnets at all times. so the coil can not be on the outside. Coil must be on the inside. I want each pole of the rotor to have Both Polarity magnets balanced on each end of the coil's pole.
Neither of the 2 original layouts will work to accomplish this. Both proposed designs so far are 1/2 way there... The answer is combining designs..
Funny enough- it makes the Free Mason logo and resembles the as above so below symbol. It is 2 sinewaves 180 degrees out of phase.
If we put 1 oval shaped inductor coil inside- I think this thing will be perfectly balanced (magnetically) and should induct nicely.
So instead of wasting lots of wire winding my big imbalanced coil- I am thinking this way is superior.
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