One magnet no bearing Bedini motor

[gadgetmall]

Some experiments concerning feeding energy back to the source have been made.
Since some things that have been done with bearing-based bedini motors were tried on the one magnet bearingless motor, i have dug up a conceptional idea by Bedini/Cole that has been succesfully modified by Rick Friedrich for his school boy motor.

The fact that the single main rotor magnet has no flywheel makes it difficult to attach commutators to it to do the switching, so i have tried to keep the original solid state idea.

Unfortunately there was not much effect.
I have tried bipolar transistors and MOSFETs to do the switching because i thought that the switching would maybe not happen with either one of them.
The dilemma is that solid state switching never ABSOLUTELY disconnects anything, rather it is controlled by raising the resistance in the transistors and i believe that this is the source of the
missing success of this attempt.
I will further try to find ways to deal with that.
Am no big fan of Reed switches, they have such a limited lifespan and have a limited frequency that they can switch and hall sensors dissipate power which i think is also not good.


Video: http://www.youtube.com/watch?v=Sy1dDLQu71Y

a hall effect transducer and a few fets should do it .

[Pirate88179]

Jonny and all:

I took apart my plate set-up for my one magnet, no bearing replication and removed the core.  My 1" cylinder spins very stable now.  (Man, those things are STRONG!)  It spins very fast but I am unable to get a satellite magnet to spin from it.  When I hold one in my hand anywhere near the spinning one, I can feel very strong pulses at a high frequency...even up to about 24" away.

I am going to do some experiments with some magnet wire wrapped around the spinning magnet to see what happens.  Maybe I can pick-up some output via induction as, even though the coil will be spinning the same speed as the cylinder, it will still be turning very fast relative to the coil which is basically an electro-magnet part of the time.  Maybe nothing, maybe something...who knows?

I also want to replicate Retrod's orbiting aluminum sphere experiments as well.  So much to do.

Bill

[gadgetmall]

Jonny and all:

I took apart my plate set-up for my one magnet, no bearing replication and removed the core.  My 1" cylinder spins very stable now.  (Man, those things are STRONG!)  It spins very fast but I am unable to get a satellite magnet to spin from it.  When I hold one in my hand anywhere near the spinning one, I can feel very strong pulses at a high frequency...even up to about 24" away.

I am going to do some experiments with some magnet wire wrapped around the spinning magnet to see what happens.  Maybe I can pick-up some output via induction as, even though the coil will be spinning the same speed as the cylinder, it will still be turning very fast relative to the coil which is basically an electro-magnet part of the time.  Maybe nothing, maybe something...who knows?

I also want to replicate Retrod's orbiting aluminum sphere experiments as well.  So much to do.

Bill

Im running core less also Bill . Can you give me a Source of your 1 inch tube . the one jonny has is way too expensive for one magnet . like 18 dollars with the 12.99 gbp shipping  !! I got My 1 inch ball n48 magnet in and that thing spins so fast i cannot figure out a way to keep it still . It flew off like a buck shot and put a hole in the wall I have never seen anything spin that fast with 2 little batteries pulling so little current . I estimate 100,000 rpm . i have tried the saturn magnet but cant get it to stop rolling around . i even tried oil in the bowl . it wants to FLY or walk away  !!The only thing i can think of is floating it in a container of mercury ?

Gadget

[xenomorphlabs]

@Gadgetmall:
Just use a higher base resistance to stabilize the rotation by reducing the speed.
However i think it cant possibly rotate at 100k RPM that would be 100-200 times faster as what
most people are having their magnets rotate at, especially not at 1 -2 mA and with friction.
At 12 Volt i had problems too preventing it to lift off due to the higher current provided by a 12 V battery.

I will experiment with a hall transducer-based circuit now and see if the current consumption of the hall will indeed get compensated by the return.

[brownsville]

@gadgetmall - try this link for magnets - http://www.kjmagnetics.com/proddetail.asp?prod=RC4CDIA

@JonnyDavro - great work going on - I have been too busy to do anything lately - I did put a compass up to the spinning snake egg and found that the side has very little effect on it but when held above the top of the magnet it spun the compass. Perhaps this helps explain the additional power when the pick up coils are tilted.

@zenomorph - everything that I have read on pickup coils states that the opening size (center) of the coil should be close to the same size as the diameter of the magnet that is being used - a 2" magnet would require a 2" diameter center. This could account for the differences that you and Jonny are having in your coils. If possible could you wind a pickup coil on a much smaller diameter bobbin to see if this makes a big difference?

I did mess around with an aircore (lidmotor coil with the iron core removed) and got a 5/8" round going great. Also got a number (6) satelites (1/8") spinning using an Xwobble snake egg magnet...fun stuff. Really looking forward to getting some of the cylinder mags soon.

Brownsville