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Author Topic: Kundel Motor  (Read 22533 times)

Offline spadestick

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Kundel Motor
« on: June 01, 2006, 08:10:28 PM »
Has anyone seen or heard or replicated the Stephen Kundel motor? it really seems like a working solution!! Hurrah! Check out all the videos including the replication project.

http://www.kundelmotor.com

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Kundel Motor
« on: June 01, 2006, 08:10:28 PM »

Offline Liberty

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Re: Kundel Motor
« Reply #1 on: June 01, 2006, 09:33:36 PM »
Very interesting motor.  It demonstrates a working motor (very important, as most other motors claim to run but have never been seen running by a live person willing to give their testimony to the public), and a good way to extract motion from magnets (while using very little power).  The motor is not a self starter, but requires a spin from the hand to start.  The motor has good speed despite the moving part (moving parts can be justified in a motor as this motor demonstrates it's speed for certain applications).  It is somewhat difficult to build because the ring magnets have to be cut to operate correctly and it requires quite a few magnets for the basic model to run.  This model shows that timing to a magnetic motor is of great importance for performance.  The magnetic angle of thrust between magnets is not ideal on this device, and results in weak torque which is partially derived from the linear action magnetic arm that shifts the magnets position which requires power.  This model uses some attraction and repel from the magnets to aid in the creation of rotational torque in running the motor, without running into an opposing pole (preferred way to design a magnet motor).  More magnet rings can be added to increase strength of motor, but also adds bulk to the moving magnetic arm.  Overall, nicely done and well thought out.  A good study in magnet motor design and has many good attributes.  There are movies of replications by others at the Kundel web site.
« Last Edit: June 01, 2006, 09:56:27 PM by Liberty »

gn0stik

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Re: Kundel Motor
« Reply #2 on: June 01, 2006, 09:38:57 PM »
very interesting design, however I don't know if it's anything to celebrate about just yet, the motors in the videos, even the replications, were not self-runners. It's a novel concept, however I don't know if it's an OU device, or just a unique PMM. It seems that the armatures don't move back and forth very far to get those fairly high rpms, so it could be possible to mechanically oscillate, or generate the power to oscillate the device. 30 volts at .4 amps (12W) on the australian replication, to run it, but what's the output?

I also noticed that it was fairly low torque (he slowed it almost to a stop with his fingers). So mechanical total power isn't all that astounding.

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Re: Kundel Motor
« Reply #2 on: June 01, 2006, 09:38:57 PM »
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Offline Liberty

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Re: Kundel Motor
« Reply #3 on: June 01, 2006, 10:04:29 PM »
very interesting design, however I don't know if it's anything to celebrate about just yet, the motors in the videos, even the replications, were not self-runners. It's a novel concept, however I don't know if it's an OU device, or just a unique PMM. It seems that the armatures don't move back and forth very far to get those fairly high rpms, so it could be possible to mechanically oscillate, or generate the power to oscillate the device. 30 volts at .4 amps (12W) on the australian replication, to run it, but what's the output?

I also noticed that it was fairly low torque (he slowed it almost to a stop with his fingers). So mechanical total power isn't all that astounding.

Any ideas as to how he could increase the torque on the motor without adding bulk to the linear magnet arm? 

My suggestion would be to add another whole motor running more magnets at a 90 degree rotation to the first motor, but still running on the same axle to add torque to the motor further around the rotation.  Hopefully it would add more torque than electrical power used so it could be recovered with a small generator???

gn0stik

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Re: Kundel Motor
« Reply #4 on: June 01, 2006, 10:14:38 PM »
Well, without adding a flywheel, there's not much you can do... Adjusting the timing would be critical to torque, but aside from that, the only thing that would improve it, would be ensuring you are using the same strength of magnets on both the rotors and stators, and using bigger mags. neo n45-50 would be as strong as you can get..  Also, he's got too much mass on there already. You'd get the same rotational speed out of one rotor/stator setup as you would out of 3, but it's not really hurting anything the way it is.. Just more work to build. More mags does not necessarily mean more power. Larger mags however does.

However first things first, he needs to wind some coils and attach some mags to that shaft and see what kind of power he gets out of it with a low effiency generator. Then he can scale up the calculations to a higher efficiency setup.

for e.g. "If I'm getting (eout) power with a generator that is (x%) efficient, my (eout) with a motor that is (y%) efficient would be z.."

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Re: Kundel Motor
« Reply #4 on: June 01, 2006, 10:14:38 PM »
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Offline Liberty

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Re: Kundel Motor
« Reply #5 on: June 01, 2006, 10:33:34 PM »
I would think that if the magnets were bigger around, say like 12 inches or larger, that the torque down at the axle would be increased by the larger magnet ring turning it providing more leverage. 

I agree that a small generator should be attached to see what he can get out of it.  I am at the same point on my motor.  Stepper motors are a good choice for low rpm motors (see web page below), and small permanent magnet dc motors like RC car motors or toy motors are a good choice for higher rpm motors.  Here is a web page that may be helpful to others needing to make a small cheap generator to test a motors output with a stepper motor.

http://www.c-realevents.demon.co.uk/steppers/stepmotor.htm

jake

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Re: Kundel Motor
« Reply #6 on: June 02, 2006, 03:10:30 PM »
I really like what he (Kundel) is doing.

He is not showing a bunch of vague drawings and sketches.
He is not making a bunch of wild claims.
He is not talking about threats on his life.
He is not hiding behind a veil of secrecy.
He is not leading people on wild goose chases.
He is not selling "snake oil"
He is not asking for money.

He is building an interesting motor that actually rotates, and putting it out there for everyone to see.

Clearly this is not an "overunity" or PMM, and he doesn't claim it to be.  It is innovative and functional, though, and I commend him on his approach of showing something actually working before making a bunch of wild claims.  The concept of creating rotation from reciprocation (and vice-versa) without contact between the rotator and reciprocator is noteworthy itself.

I like this guys style.

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Re: Kundel Motor
« Reply #6 on: June 02, 2006, 03:10:30 PM »
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Offline konduct

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Re: Kundel Motor
« Reply #7 on: June 02, 2006, 03:51:12 PM »
Jake noticed the same thing I did about Kundel making no claims to OU.  What he has done is given us another way to look at magnets and motors.  I think we'll get this thing down once we have the right perspective.  I'm pretty sure it will be a mechanical method of opening and closing the gate to go full circle. At least until we get slicker at manipulating fields.

I have assembled a basic Kundel motor to study the effect.  (Without the actuator coil.)  I assembled a sliding apparatus to hold the actuators and moved them back and forth with my hands.  It pays to "feel" what magnets are doing. 

What I have gathered from my plastic version is that the faster it goes, the less distance the actuator has to move.  I would imagine that once a motor like this gets up to a certain speed, you would only need something like a vibration or sound wave or some other kind of micro-pulse to keep the actuator moving "in rythm" so to speak.  Just using my hands, I have to start off moving it back and forth about an inch.  After about 12-15 rotations, I only have to use the slightest movement to keep accelerating until it goes too fast for me to keep rhythm.  Add a flywheel and there could be some decent torque in addition to high rpm's.  Although I can appreciate the Sprain design, it seems to limit its rpm's by it's inherent design.  The Kundel motor just wants to go faster! 

We need something that starts off vibrating "big" as far as amplitude and low in frequency and then ends up "small" in amplitude and fast in frequency.  I imagine a sound like the beginning of "THX" movies. 

I'm thinking of hooking a speaker up to the actuator and slowly bending a low frequency note up in pitch until the motor max's out.  Even if I have to kick start it to get it to the point where it will self accelerate off of about 20-30 hz.  I know from running sound that you need way less wattage to run midrange speakers and tweeters that you do for the low freq subwoofers.  Eventually, you could go supersonic in frequency and use a less and less energy in theory, right?  So with a flywheel and possible "Supersonic" capabilities, the puppy might be able to rock the house!   

Thoughts?
     
K~ 
« Last Edit: June 02, 2006, 04:08:12 PM by konduct »

gn0stik

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Re: Kundel Motor
« Reply #8 on: June 02, 2006, 04:00:25 PM »
Yes, I think the way he has it built, with the reed switches, it gives itself it's own upper limit. We take what we know about resonance, and mechanical gating, and this thing could be fun. How to lower the reciprocating action once it gets up to speed though?

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Re: Kundel Motor
« Reply #8 on: June 02, 2006, 04:00:25 PM »
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Offline konduct

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Re: Kundel Motor
« Reply #9 on: June 02, 2006, 04:08:50 PM »
The reed switches may be helpful for startup, then disengaging once a "sonic" rpm has been reached.  I'd rather just spin it up manually, then hit that bass note to take over.

If I had a "super speaker" that could go sub-sonic, it may even self start.  Either that or I will have to lower the tolerances on this particular build.

**By the way folks...I didn't have to cut ring mags to get this to work.  I've been recycling the same old neos for most of the designs I've worked on.***

Offline Liberty

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Re: Kundel Motor
« Reply #10 on: June 02, 2006, 05:03:56 PM »
Jake noticed the same thing I did about Kundel making no claims to OU.  What he has done is given us another way to look at magnets and motors.  I think we'll get this thing down once we have the right perspective.  I'm pretty sure it will be a mechanical method of opening and closing the gate to go full circle. At least until we get slicker at manipulating fields.

I have assembled a basic Kundel motor to study the effect.  (Without the actuator coil.)  I assembled a sliding apparatus to hold the actuators and moved them back and forth with my hands.  It pays to "feel" what magnets are doing. 

What I have gathered from my plastic version is that the faster it goes, the less distance the actuator has to move.  I would imagine that once a motor like this gets up to a certain speed, you would only need something like a vibration or sound wave or some other kind of micro-pulse to keep the actuator moving "in rythm" so to speak.  Just using my hands, I have to start off moving it back and forth about an inch.  After about 12-15 rotations, I only have to use the slightest movement to keep accelerating until it goes too fast for me to keep rhythm.  Add a flywheel and there could be some decent torque in addition to high rpm's.  Although I can appreciate the Sprain design, it seems to limit its rpm's by it's inherent design.  The Kundel motor just wants to go faster! 

We need something that starts off vibrating "big" as far as amplitude and low in frequency and then ends up "small" in amplitude and fast in frequency.  I imagine a sound like the beginning of "THX" movies. 

I'm thinking of hooking a speaker up to the actuator and slowly bending a low frequency note up in pitch until the motor max's out.  Even if I have to kick start it to get it to the point where it will self accelerate off of about 20-30 hz.  I know from running sound that you need way less wattage to run midrange speakers and tweeters that you do for the low freq subwoofers.  Eventually, you could go supersonic in frequency and use a less and less energy in theory, right?  So with a flywheel and possible "Supersonic" capabilities, the puppy might be able to rock the house!   

Thoughts?
     
K~ 

What this motor demonstrates is a way to run a magnet motor that was said to be "not useful" because it has a moving part.  It shows that what was once thought of not practical to do, has now become useful towards acheiving a motor that extracts motion from magnets using very little power.  That is what I have done with my motor too.  Electric motors are stronger, but you can still achieve motion with less power using magnets in your motors.

Is there a way to show a design without the concern that someone will take it and patent it and call it theirs? 

Liberty

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Re: Kundel Motor
« Reply #10 on: June 02, 2006, 05:03:56 PM »
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jake

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Re: Kundel Motor
« Reply #11 on: June 02, 2006, 05:29:53 PM »
In the US they use a provisional patent as a way to date your idea while you decide whether to patent it.  It becomes the official date of recod in disputes, I think.  If you really think you are on to something you should file for provisional at least.  I think you have one year of "protection" with it, and it is relatively inexpensive.
 

Offline Liberty

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Re: Kundel Motor
« Reply #12 on: June 02, 2006, 05:59:19 PM »
In the US they use a provisional patent as a way to date your idea while you decide whether to patent it.  It becomes the official date of recod in disputes, I think.  If you really think you are on to something you should file for provisional at least.  I think you have one year of "protection" with it, and it is relatively inexpensive.
 

Thanks Jake,

I'll look into it.

Liberty

gn0stik

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Re: Kundel Motor
« Reply #13 on: June 03, 2006, 04:12:14 AM »
Ok I noticed something interesting about his motor. I don't know if anyone else looked at the pics on the front page of his web site, or if  you just looked at the movies and animations. The pics show something that is more revealing than the movies do. Take a close look at the input power under load/no load conditions. This gives you a HUGE clue as to why he uses a voice coil instead of some other electromechanical device. It actually draws LESS power under load than it does without one, think about that one for a minute. This guy is brilliant. A voice coil does EXACTLY the same amount of work regardless of load. So I wrote him an email to confirm it. He's very careful about making any claims as to the power output of his device. That I'm sure will remain unchanged, and I for one commend him for it. IF his device is OU(and I'm not saying that it is), that will kill it quicker than anything, as those types of claims have killed every OU device to come down the pike thus far. We will probably NEVER see output readings. However his input readings are very interesting. I'm going to build one regardless of whether or not it is OU. I just think it will be a great learning experience, and fun to boot. Besides, it's the only way to find out.

Quote from: Me
Hey, I just found your web site for the Kundel Motor.. Very interesting design. Couple of questions however, how can it possibly draw less power UNDER LOAD than not? That?s mind boggling. Also could it be possible to power it via DC as opposed to AC? I?m assuming the voice coil is critical, no servos or other linear devices would work and have the same effect under load? I don?t know anything about voice coils so I don?t know if they can be powered via DC. I assume so since boom boxes have speakers in them, and they are DC. Unless they rectify the VDC to ADC. I?m thinking about starting a motor project of my own after seeing this. Also, what kind of ouput power are you seeing? How efficient is this type of electric motor verses a typical electric coil/mag motor?

Rich

Quote from: Stephen Kundel
The load is not directly connected to the solenoid. The solenoid is pulling in or pushing out, it does the exact same work (pushing / pulling the reciprocating magnets) every reciprocation load or no load. The load is between the reciprocating magnets and the rotor magnets attached to the axle.  Torque is comparable to a 30+ watt fan motor, but the second prototype is not a good test bed, was built for determining magnet spacing (reciprocators and rotors), and the voice coil's air gap is massive.  Starting third prototype for testing.
 
http://en.wikibooks.org/wiki/Engineering_Acoustics/Moving_Coil_Loudspeaker
 
http://electronics.howstuffworks.com/speaker5.htm
 
Sincerely
 
Stephen Kundel
« Last Edit: June 03, 2006, 08:44:05 AM by gn0stik »

Offline Liberty

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Re: Kundel Motor
« Reply #14 on: June 03, 2006, 07:01:27 PM »
Ok I noticed something interesting about his motor. I don't know if anyone else looked at the pics on the front page of his web site, or if  you just looked at the movies and animations. The pics show something that is more revealing than the movies do. Take a close look at the input power under load/no load conditions. This gives you a HUGE clue as to why he uses a voice coil instead of some other electromechanical device. It actually draws LESS power under load than it does without one, think about that one for a minute. This guy is brilliant. A voice coil does EXACTLY the same amount of work regardless of load. So I wrote him an email to confirm it. He's very careful about making any claims as to the power output of his device. That I'm sure will remain unchanged, and I for one commend him for it. IF his device is OU(and I'm not saying that it is), that will kill it quicker than anything, as those types of claims have killed every OU device to come down the pike thus far. We will probably NEVER see output readings. However his input readings are very interesting. I'm going to build one regardless of whether or not it is OU. I just think it will be a great learning experience, and fun to boot. Besides, it's the only way to find out.

Quote from: Me
Hey, I just found your web site for the Kundel Motor.. Very interesting design. Couple of questions however, how can it possibly draw less power UNDER LOAD than not? That?s mind boggling. Also could it be possible to power it via DC as opposed to AC? I?m assuming the voice coil is critical, no servos or other linear devices would work and have the same effect under load? I don?t know anything about voice coils so I don?t know if they can be powered via DC. I assume so since boom boxes have speakers in them, and they are DC. Unless they rectify the VDC to ADC. I?m thinking about starting a motor project of my own after seeing this. Also, what kind of ouput power are you seeing? How efficient is this type of electric motor verses a typical electric coil/mag motor?

Rich

Quote from: Stephen Kundel
The load is not directly connected to the solenoid. The solenoid is pulling in or pushing out, it does the exact same work (pushing / pulling the reciprocating magnets) every reciprocation load or no load. The load is between the reciprocating magnets and the rotor magnets attached to the axle.  Torque is comparable to a 30+ watt fan motor, but the second prototype is not a good test bed, was built for determining magnet spacing (reciprocators and rotors), and the voice coil's air gap is massive.  Starting third prototype for testing.
 
http://en.wikibooks.org/wiki/Engineering_Acoustics/Moving_Coil_Loudspeaker
 
http://electronics.howstuffworks.com/speaker5.htm
 
Sincerely
 
Stephen Kundel

I think Stephen Kundel uses a voice coil because it is a much faster device and uses less power because of the magnetic assist to the voice coil, than a solenoid for the puposes of his motor.  Also, he only drives it one direction to save power consumption.  50% duty cycle.  On this design, the faster that the motor goes, the less time the voice coil is turned on to drive the magnets into position. 

I don't really care what kind of claims he makes, over unity or not, as that does not change the motor operation at all in my mind.  I just focus on the ability of the invention rather than the character of the inventor and find the motor design interesting using magnets on a rotor and a stator.  It has to use less power than a comparable electric motor of high efficiency for the amount of work accomplished per watt used, because of the use of magnets to assist in rotation is replacing electric power consumption that would occur in a standard electric motor.  It is on the right path and idea to producing more power than it consumes in my opinion.  Perhaps Stephen Kundel will put a small generator/alternator on his motor and compare power in to power out to answer the question for us.

Liberty

 

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