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

Hey Jim
Try the pu coils btween the drive coils. It looks like you can squeeze them in

Mags

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

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.

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.

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

I may just have the thing in the shed. Thanks that's an easy one to test.

I found out tonight that my motor will operate on only one coil! Given my exp with turning 1 coil away incresed rpms I decided to drop coils off 1 by 1. It reminded me of PLs miniorbo replication.The voltage on the pick upcoils is over 1v higher than the battery. I'm not getting too excited yet as I dont know the amps are on the pu. Ihave hooked the pu coils to the batt. Voltage seems to drop tho. I've simply hooked up the + & - from the cap on the pu. Any thoughts?

Hi Jim,

Now that I have seen the pictures on your setup where you showed the position of the pickup coils (two days ago or so) and you wrote that loading the pickups stopped the motor,  I am sure the problem is the position: the current from the load creates a field that hampers, screens off the useful field from the main coils. thus any original attract or repel force that insured flowless working by the main coils are opposed. And you found that gradually the problem decreased as your decreased one by one the number of coils, hence you had less and less opposing force in front of the main coils.
So I also think the only remedy is to rebuild your setup indeed and place the pickups relatively far from the main coils or at least not just inbetween the main coil and any rotor magnet when these two latter just face each other.
And yes I think the pu coils will affect the motor operation: when you load them, RPM will surely decrease due to normal Lenz law and you will notice this in increased input current draw. I mean if you so far tested your present setup by slowing it down by your hand and watched the input  current: it increased, right?
(I do not think pu coils would affect the magnets in any other way, except Lenz law.)

Regards,  Gyula