The Ossie motor

[Jimboot]

@ Jimboot, if I may make a suggestion.  If you would like an easy way to switch batteries without stopping your motor, you might want to try using a DPDT switch.  You could simply hook a battery holder to each side of the switch, and a simple flip of the switch will easily switch between the two battery holders.  So you can easily place a more dead battery in the other holder, flip the switch, and remove the freshly charged battery. Also a good way to give a battery a couple hours rest to see what it does, while keeping the motor running.  I hope this makes sense.  It's also a good way to hook an amp meter to a circuit without disconnecting it.  You could even use the same concept to hook a capacitor in place of the battery without stopping the motor.  Then if you see the cap draining to fast, you just flip the switch back to the battery, until we get a circuit figured out that works to charge caps also.  Caps are tough to replace batteries with, because they are just not efficient energy catchers as batteries seem to be.  Just a couple simple thoughts that may help.

Thanks CP. Awesome. That's exactly what I need. Just trying to work out where to hook up my probes to get a 2nd trace happening. What would be the original coil polarity of the OM circuit? I want to compare & if I have arsed the correct polarity woohoo.. but I doubt it as I am getting different results. Also with your replication will you be able to adjust coil orientation? I have found this is really useful in tuning this motor & my Orbo reps. See my latest vid re coil orientation & coil polarity http://www.youtube.com/watch?v=ahmehREJWWg I'd love your feedback.

[Jimboot]

Another  test with Ossie motor with  8 mags 4 coils and 2 RS.
Still have a voltage drop.
http://www.youtube.com/user/Mopozco#p/a/u/0/89LRtKy00_U

“My 1.5V is now at 2.07Volts”.
- Congs, Jim, it's amazing!...

Hey Congs how long have you run them? I have found that some batteries have dropped before they rise. Great rotor! Also what is the polarity of your coils? Mine is -++--++- . For me a smaller rotor allows me to adjust the coils so they have more influence on rotation. Where to you have your reeds? I didn't see voltages rise or have an indefinite runner (switched off after 97.5 hours) until I bought a scope & followed Ossies advice about shortening the activation pulse.

[woopy]

Hi Jb

I will try your coil polarity. Mine are   - + - + - +

If i understand correctly you said before that your multimeter showed about 2 volts on your Ossie-motor battery and than the Multimeter battery died, than you replace it with a new one and than your multimeter showed 1.5 volt on the Ossie motor battery . So my question is , is your Ossie motor battery really charging during the run or is it eventually an artifact due to the multimeter old battery. Or other said , with the new multimeter battery is the Ossie battery still going up under run ?

Thanks and keep up the good work

Laurent

[woopy]

@ Jb

Ouups i forgot one coil

my polarity is  - + - + - + - +  that is my coil are in serie  and yours are not in serie Right ?

laurent

[Jimboot]

Hi Jb

I will try your coil polarity. Mine are   - + - + - +

If i understand correctly you said before that your multimeter showed about 2 volts on your Ossie-motor battery and than the Multimeter battery died, than you replace it with a new one and than your multimeter showed 1.5 volt on the Ossie motor battery . So my question is , is your Ossie motor battery really charging during the run or is it eventually an artifact due to the multimeter old battery. Or other said , with the new multimeter battery is the Ossie battery still going up under run ?

Thanks and keep up the good work

Laurent

The batteries are still going up. I think the 2V was the anomaly because of the meter. I'm running one now (diff meter) & seeing similar rises of .008 /hour. Getting the tuning right tho is the hard part & getting the scope shot below. WHen the pulse looks like this, the battery charges but I'm having more success with non-rechargables.