The Ossie motor

[callanan]

Hi Ossie,

Would like to know if the switches are ON and OFF at the same time?  (I think they are.)
Also, the two 100 Ohm resistances are the best 'compromise' for the batteries to 'see' each other? 
This setup works in repel or attract mode?

One thing is: the more permanent magnets you use the more 'free' flux is available, it seems.

Thanks,  Gyula

Hi Gyula,

Yes, both switches turn on and off at the same time and the coils are in attraction mode.

There is alot going on in this circuit which works particularly well with old sulfated 12V lead acid batteries who can still maintain their voltage but not much current!

Regards,

Ossie

[Jimboot]

Ok got my motor up to 4000 RPM  on 110 milliwatts tho - then the mags went flying

All better now. Put 2 of the little coils (tried to wind my own mags but go nowhere near the perfomance of these little guys) on & @2500rpm I get about 7.5V. So I will be adding another 2 tonight.

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 coil & drive coils.

[gyulasun]

Hi Jimboot,

May I suggest trying to arrange the pick up coils further away from the motor driving coils so that their own flux fields could not interfere.  I know this may cause difficulties because of given distances and sizes but one thing to be considered is the fields may affect each other. Maybe to test this you could hold a pickup behind the rotor magnets, radially closer to the axle (if the rotor body lets it of course).
Another test may be if you have a small ,say, 6 x 6 cm i.e high enough surface, thin metal plate that you hold between a pick up coil and the nearest driving coil to shield them from each other?  Some transformer laminations would be great for this test. I know this may cause some magnetic drug but it is acceptable.

rgds,  Gyula

[Jimboot]

Still working on pu cois. Onto my 4th config now. One of the mags clipped a pu coil last night & sent things flying again.  I haven't got much room to work with to get pu coils in there.

[IceStorm]

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

@Ossie
             Whats scare me a bit in your setup is the primary battery, a 17A vs 3-5A secondary battery. Can you run the same test but with both battery of the same size just to be sure that the recharge effect is indeed real and not just a balancing effect between the 2 battery.

Best Regards,
IceStorm