The Ossie motor

[Jimboot]

Hi All,

Please see the following circuit below. I am getting great results with this circuit and find that I can get both batteries to charge at the same time. I can also keep replacing B2 with another battery until it is charged whilst never having to replace B1.

Battery swapping of B1 and B2 also works very well.

Regards,

Ossie

Ok circuit running with pu coils as well pu colils currently at 3.2v . Using 2x 12v batteries one old and suphated as the charge battery. Voltage looking good atm. Still not doing anything with my pu coils. Drive batt at .1A

[Jimboot]

Oh  you already tried?  oops.
If you get some plexi strips like 1/4 in. , it bends nice with the heat of a torch or hot air gun. It makes brackets easy.
I have an idea I will draw up later, I have to go to work.  But if you use a small u bolt and wind a coil on the u and have a bracket or bridge and have the open ends of the u bolt aiming down, 1 bolt end just above the S pole and 1 just over the N pole. The bolt will attract the field of the mag upward and it will generate voltage.
Or you can do it from the top and bottom so there wont be a wobble induced in the rotor.
So you have it doing 4000 rpm?  This is good. I would work on more speed as you go, but if the gen brings it down to to even 1000 rpm to get some decent output, retune the motor at that point. Loads change things so it has to be re tuned .
Mags

Ok a lot to study there (for me) The coils as they are set are very finicky & inconsistent in their charge. I find the "booby" wave below is getting the most efficiency in drive mode.

btw 4000rpm is bloody scary. Had a couple of near misses with flying mags. I wouldn't be happy with anything under 1500 in this current rig.

[freeorbo]

I still have a prob when I try & use the current tho. Even tho the pu circuit & motor circuit are not connected as soon as I try to run a bulb it kills the motor. Weirdest thing. The scope trace does not change either. The whole motor just stops. I'm thinking phase cancellation or some weirdness like that between the pu  & drive coils.

In the Orbo schematic Steorn posted, you can see that they actually added a second rotor higher up on the spindle, with extra magnets that drive the pickup coils. Could you add something like that? So that the pickup coils aren't interacting with the time variance of the magnets on the main drive rotor?

These motors seem so dependent on a specific relationship between the coils and the magnets and very finely capturing the rising and falling fields. If you introduce extra competing fields it would seem to throw the delicate balance out of whack.

But still you should be able to capture some energy from the torque in the rotor, right?

[Jimboot]

In the Orbo schematic Steorn posted, you can see that they actually added a second rotor higher up on the spindle, with extra magnets that drive the pickup coils. Could you add something like that? So that the pickup coils aren't interacting with the time variance of the magnets on the main drive rotor?

These motors seem so dependent on a specific relationship between the coils and the magnets and very finely capturing the rising and falling fields. If you introduce extra competing fields it would seem to throw the delicate balance out of whack.

But still you should be able to capture some energy from the torque in the rotor, right?

Yep. I just have to work out the right config. I've tried dupe mags above but my rotor is not keen on the extra mass. Even to the side of the drive coils there must be some interaction with the fields.

[Jimboot]

hey Jim

Well if the lil coils affect it that much, of which I am surprised, then I wonder if the could block a magnet as a stator as well.
The thing is, if the fine wire pu coil is enough to stop the motor, then it should use very little current to block a stator magnet to get motor effect. And the regen developed in the coil after the pulse should be a lot.

Other than that, Ossies setup seems to be the one to work on.

Sorry for the no go on that.

Mags

I've only just understood what you're saying here! Great idea. I lost another coil last night tho so have to go buy another torch.