One magnet no bearing Bedini motor

[xenomorphlabs]

Thanks to Jonnys tip with the dish soap cap, i have a stable spinning satellite magnet going now.
http://www.youtube.com/watch?v=QIe2cNCNC3Y

The voltages i can pick up though are far from what Jonny is getting.
It boggles my mind lol.
The only factors that can make the difference are:
His main rotor spins 7 times faster (which is unlikely)
His satellite magnetic field is 7 times stronger (Also not, his is N42, mine is even supposed to be N45)
His pickup coil has 7 times more turns (Mine has 7k, so his would in this case have 50k, very unlikely too hehe)

I use AWG 32 wire (0.2mm), going thinner would not deliver enough current was my thought.

Anyone has another idea?


I also reduced the system voltage to a single AA battery now, so it runs ar 1.2 Volt @ 7mA which is veeery nice.

http://www.youtube.com/watch?v=TWiZNIoI1vw

[jonnydavro]

@Xenomorph.Great vids mate,nicely done with the single AA @7mA.That is very very little power.
Ok pickup voltage.Wire size is very important for pickup coils,thick gets you more current, thinner gets you more volts.I am using 40swg which is a lot thinner than your 32swg so thats one difference.
My pickup coil spool is from a roll of plumbers PTFE tape,dimentions are 52mm x 20mm with the centre hole being 25mm and is about 3/4 full of wire.
Also try running your pickup and satellite on the surface and not elevated to the same level as the rotor and now thanks to you i rechecked my earlier voltage test and made a chance discovery.
This is what i found.This  test was done  at 2.8v,With the pickup coil conected to a bridge rectifier and then to the meter.
With the satelite 6 1/2" away from the main rotor.If i just place my satellite into the pickup coil it will generate quite high voltage,3.2v.See pic 1.
If i tilt the satellite slightly and move it around against the side you can find a position where the voltage starts increasing(7.31v) so then you wedge it in that position with a piece of cardboard see pics 2 and 3.
So basically efficiency can be increased a lot more by reducing the friction in the satellites but i think its a combination of the things i have mentioned above.The voltage is there,you just have to tease it out.Hope this helps regards jonny.

[jonnydavro]

Hi.El-tigre from the energetic forum suggested and has successfully run an alternative satellite rotor consisting of a testube with a small magnet fixed to the bottom and then you can place a small rod or a bar magnet into the testube and it is levitated by the fixed magnet.I have replicated this.First i tried a 25mm x 5mm rod magnet in a 75mm x 12mm straight sided testube with a small feritte magnet hot glued to the bottom and it span but rotation was rattle and a bit eratic but this may be due to having to much wiggle room.I then tried a diametricaly magnetised bar magnet with similar results but without the small washers that El-tigre used so i will retest that when i can find some small washers.Then this morning i wondered what would happen if i used two 6mm neo spheres and boy was i shocked,this thing spins and not only that it levitates right to the top of the testube.I would be interested in any thoughts on that.I have not done any other tests on this yet but the rpm's are very high so i would expect high induced voltages.Here's some pics and a vid so you can see what i mean.Regards jonny

http://www.youtube.com/watch?v=wYJzGMilByM

[xenomorphlabs]

@Jonny:

I had not much luck getting significant voltages induced with the two spheres sticking together.
I believe that is due to the fact that their magnetic orientation is upwards and downwards and not perpendicular to their rotational axis. A diametrically magnetized magnet will solve this i hope.

Video: http://www.youtube.com/watch?v=2pO0yYEycN4

Keep it coming,
Xenomorph

[jonnydavro]

Hi.Here is a vid i did of a test with 12 stable satellites in ice cube trays.They all self started on the initial spin of the main rotor.

http://www.youtube.com/watch?v=d4NrzeijnuY

@ Xenomorph.Hi.I have done a few tests including induction and at 3" from the main rotor i can induce 9.5v and at 5"-7.6v.This is with the sphere's at the top of the tube with my pickup coil at a 45 degree angle on top of the tube.If i move the testube further than 5",the sphere's stop spinning.I also tried without the magnet and it seems to levitate even better than with the repulsing magnet like you suspected.
To me it looks like the sphere's are rotating faster than the main rotor,i don't think i can get my tacho on it but if you observe it when start it it looks like it is faster to.What do you think?
There is still a lot of friction here as the sphere's are rubbing up against the side of the tube so thats something to think about.
Also i would suggest you use plastic testube's as i had 15 which i got for my small sphere inside the coil motor and i have broke 7 messing with this today.Regards jonny