Newman machine replica

[hartiberlin]

Well done,
yes,if you change the Fire angle versus magnet angle and it now
rotates slower you are working now in the generator regime and
not more so much in the motor regime.
So it is running slower but converts more stored magnetic energy from
the coil back to electrical energy via the spark to your battery.

Now it would really be helpfull,
if you could get some graphite and use this as the contact material
versus a copper ring on the axis shaft.
So you could get a better back current spike and even
charge up your battery better.

It all depends on the right commutator materials.

For instance drop some conducting tap water onto your
contact points and you will have totally different back current pulses,
much lower...Just try that for a short test....you will see the difference
of the contact materials. If the contact points are wet, it behaves differently...

[TheOne]

ok thanks for your comment

I dont have graphite, i will try to find some this week, also i want to see if my battery will get charged up with what i have

[hartiberlin]

You can easily get a graphite rod from an zinc carbon battery D-cell or AA-cell. Make sure it is really a zinc carbon cell you dissassemble and not the currently mostly used alkaline batteries, as these don?t have graphite rods...
Also you could just get a soft pencil, these also have conductive graphite in them mixed with clay, the softer the less clay in it....

[jorgerojo]

Hi Guys:
How does the comuttator conexions work? How many cables do I have to wind? how many turns? where do I have to conect the cable coming out from the coil?
Please help!!!
I would like to follow you TheOne
Thank you!!!

[TheOne]

so far its quite simple, one wire go on the negative battery and the other is on the shaft, i put some tape on the shaft so the other coil wire touch the metal a little bit per rotation, and one wire touch the shaft with the positive battery

for the amount of turn i dont know myseft lol, but mine is big i think, few pound of wire.

I stopped my motor, i changed something and i screw the voltage, so its not charging but seam to work with very few current. with some of test i was able to go from 11.98 volt to 12.02, but i screw something and after 3 hours the battery goes to 11.96, so i bet i need to put more work on the best arrangement for the communicator (tape on the shaft)