STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[captainpecan]

So far I've seen that all replicators are turning on the current at TDC, after reading your post, I feel that it should be advantageous to turn it on before magnet reaches the core, so that the core disappears before magnet gets a chance to introduce gradients and leakages in it.

Well, to be honest, with my replication, if I fire it just before TDC, I get the most rpms out of it.  I'm not positive but I think there is a trade off there.  If you fire it before TDC, you may get more rpms out of it, but you may only be able to recover a smaller percentage of the energy back out of the coil, due to inductance change between on time and off time.  I think there is a delicate balance here that none of us have quite hit just right yet.  I think with our replications, we may need to give up rpms, so we can recover more energy used to drive the circuit. Then get the rpms back by increasing the number toroidal coils, thus increasing the overall torque also, and increasing the inductance which should also give even more recovery energy used to power the system.  I think I said that right... It's a bit harder to verbalize.  This is all my theory anyway.  We'll just have to wait and see.

[gravityblock]

@Ossie:

There is a very simple reason why it doesn't increase in RPM infinitely even with no CEMF.  At a certain RPM, then the pulse width will be so short that the reed switch will be continuously on.  A higher RPM means the coils are more on than off and won't be able to keep up.

OU doesn't mean the motor will run at an infinite speed.  Putting more fuel in your car doesn't make it run faster, it just makes it run longer.  Want your car to run faster then build a bigger engine.


GB 

[gravityblock]

Here may be how to increase the RPM while maintaining peak operating efficiency.

Eight coils connected in series with multiple reed switches in the system.  Only 1 reed switch will be used at any given time while each reed switch can pulse all of the coils.  Alternate the reed switch being used.  This will allow us to reach a higher RPM without the switch being continuously on.  Again, there is a limit here and in doing this we have increased this limit.  We could also use the more than one reed concept to have a constant torque as someone else here suggested earlier in this thread.  A larger diameter rotor would be a plus so the coils aren't continuously on due to the short pulse durations and higher RPM's. 

Like I said, want it to run faster then build it bigger.  One or two coils as you suggested isn't going to cut it.  Likewise, adding more switches and increasing the diameter of the rotor should make it more efficient and powerful at higher RPM's with less input energy.

GB

[Larskro]

Drawing V2.1
The 500k ohm can adjust the speed on the motor. The one end is free.

[Jimboot]

YAAAAAAAAAAY! Got my first one running! Thankyou Ossie! Vid to follow.