The Ossie motor

[Light]

“Hey Light. I'm still unclear what the def of a self runner is but I had one run for 97.5 hours on a D cell at 250-300 RPM before I switched it off”.
- Hi, Jim. I have 144 hrs of running time on single 1.5v bttry, but with voltage drop. On small scale it’s easy to notice even slight difference in setup.
Self-runner; look, you said “Voltage b4 run 1.32. After run 1.36” and “I have tried charging the running battery but not a lot of success”.
This’s a point â€" to charge the running bttry, and then and only then we can say this’s self-charger and self-runner.
Your bttry got charge after disconnection, it’s ability any normal bttry for recovering.

So, our goal (at least mine) to get charge back to RUNNING bttry.

And I like how it’s going in this thread.

“Love to see any vids you have of your rig”.
- Thks, yes I'll show more as get any success…or if it goes interesting…

cheers

[Jimboot]

“Hey Light. I'm still unclear what the def of a self runner is but I had one run for 97.5 hours on a D cell at 250-300 RPM before I switched it off”.
- Hi, Jim. I have 144 hrs of running time on single 1.5v bttry, but with voltage drop. On small scale it’s easy to notice even slight difference in setup.
Self-runner; look, you said “Voltage b4 run 1.32. After run 1.36” and “I have tried charging the running battery but not a lot of success”.
This’s a point â€" to charge the running bttry, and then and only then we can say this’s self-charger and self-runner.
Your bttry got charge after disconnection, it’s ability any normal bttry for recovering.

So, our goal (at least mine) to get charge back to RUNNING bttry.

And I like how it’s going in this thread.

“Love to see any vids you have of your rig”.
- Thks, yes I'll show more as get any success…or if it goes interesting…

cheers

That's xlnt feedback. Thanks. That's what I thought a self runner would be. I have pick up coils setup atm but my current rig won't allow separate tuning of them. In your opinion is there potentially more energy in my pick up coils or my motor. Just wondering which may have the bigger payoff. I'm thinking my PU coils. Bigger coils than the motor and more potential energy in my mags. Basically I'm replicating the ossie above the original. So same size coils & mags as the motor.
Thanks again.

[captainpecan]

That's xlnt feedback. Thanks. That's what I thought a self runner would be. I have pick up coils setup atm but my current rig won't allow separate tuning of them. In your opinion is there potentially more energy in my pick up coils or my motor. Just wondering which may have the bigger payoff. I'm thinking my PU coils. Bigger coils than the motor and more potential energy in my mags. Basically I'm replicating the ossie above the original. So same size coils & mags as the motor.
Thanks again.

My personal opinion on this matter, would be to use a smaller diameter wire for your pickup coils.  The smaller diameter will give you more turns for the same size, and a higher voltage.  It will give you less current, but on a pickup coil, you must make sure the voltage is higher than what you are charging or you are getting nowhere.  Not to mention diode voltage drops from rectifying it must be overcome also.  I'm not saying you need hair thin wire, but I would suggest if you used 20 gauge on your other coils, I would go with 24, 26 or higher for the pickup coils.  But that is my opinion.  You just want to make sure that even at lower rpms than you are used to seeing so far, that you will still have a high enough voltage to charge from the pickup coils.  Remember, adding pickup coils will decrease you rpm's to an extent, but of course you are trading rpms for more electrical energy back out.  Keep us informed of what you do, and how it goes.

[woopy]

@ Futuristic and Cp

tried the schottky between Drain and ground. And no change at all on the trace. I tried also a 1n4007 diode  and idem.

I suppose you wanted to check if the irf 540 integrated diode was OK, so i change against a BUZ 11 and no change at all. Than i also disconnected the bridge (which do nothing) and no change at all.

This morning i could get 1.7 ma and the power battery is always at 12. 18 volts and Rpm are at 470.

Tan i mounted a propeller to load the motor, the Rpm decrease to 433 and the current goes up to 4.4 ma.  see the trace is changing now. All the trace is  above the zero line

So than i decided to brake the rotor with my finger and i stabilised the rotor to get about 13 ma  and now the trace goes up. see pix 3

Hope this helps

Laurent

[futuristic]

Hmm that is odd that diode doesn't help getting so more current back.
But weekend is coming and I'm going from my work location to my home location where I have workshop.
I'll be able to test some stuff by myself because it's much easier to figure things out by doing it than by reading about it.

Have fun,
Frenky