The Ossie motor

[futuristic]

Videos:

Basic setup with one coil, reed switch and battery
http://www.youtube.com/watch?v=UUs7sFLyw44

Using relay for switching current on and off   
http://www.youtube.com/watch?v=y0YhNLgmGO0

Setup with two reed switches so that pulse is shorter
http://www.youtube.com/watch?v=elEG09CUFN4

Have fun
Frenky

[Jimboot]

Hello JB,

Can you carry out this test: to fix at interior each Coil a iron noyeau or a metal stem, (nails) would make the deal.

Thank you and continue your good work

Mustapha

Hi Mustapha I already have the coils fixed with screws. Is that what you mean?

[Jimboot]

"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"
- Running so far, but with the voltage drop (.03/24hrs).
Polarity - all same poles are outwards, i believe it's optimal, otherwise they will work against fields in coils.
RS from local electronic shop, but they are low voltage, easy to weld; looking for a good ones, hi-power, say up to 3A, they do not make them higher amperage.
So, do you have voltage rise on THE running bttry?
Thks.
cheers

The best I have had is about 0.008 volt rise per hour.

[woopy]

@Gyula

No there is no resistor between battery and reeds. The one you see on the pix is a rest of some previous test.

The system is now on a long run testing , so i will try your prop tomorrow.

Yep    of course you are right it is a micro owen cap 2000 volts and 1 micro F.

Now for the diodes I have in lab  some 1n4007   some BY 550-800  some 1N 5408 and BAT 43 and BAT 48   have you a proposal to make a better Bridge or Half bridge.  And what do you think of Futuristic setup without diode at all and coupling the reed with relay ??

just for info the long run test began 5 hours ago     and i just wanted to prepare for the night and disconnected the amperemeter   and the RPM go up and the scope trace (pix 3 on previous post ) is now almost flat.   Bloody instrument  they can lead to very bad error.

so i will let the motor for the night


good night


Laurent]

[gyulasun]

Videos:

Basic setup with one coil, reed switch and battery
http://www.youtube.com/watch?v=UUs7sFLyw44

Using relay for switching current on and off   
http://www.youtube.com/watch?v=y0YhNLgmGO0

Setup with two reed switches so that pulse is shorter
http://www.youtube.com/watch?v=elEG09CUFN4

Have fun
Frenky

Hi Frenky,

If you use the circuit you showed in the schematic on the previous page, and you do not use a diode for rectifying the pulse due to the collapsing flux of coil, then I cannot understand how the pulse from the collapsing field goes back to the battery?
Because when the relay is switched off, the (flyback) pulse is created immediatly but by then the relay contacts are open, they should be open to brake current flow. 

Thanks, Gyula