Newman machine replica

[hartiberlin]

MRAMOS,
steel on steel as the commtator is not good.

Try to use a graphite pencil or a graphite rod from
an old used zinc-carbon battery as one contact and put this
versus the steel.
Or glue a copper foil or alufoil onto the shaft and use this
versus the graphite pencil (graphite rod) contact.

You need the right dissimular metal contact points to get more spark RF power.

[CLaNZeR]

The comm is steal on steal.

I guess I need to re-wind the coil.  Was waiting on Clanzer to get home for the weekend and see he results before I added more wire.

Got home this end!! about 30 minutes ago, Flight back home was delayed grrrrrrrrrr

It now 21:53 Friday evening in UK and too knackered to go finish the motor off, but will be straight on it tomorrow Afternoon

Got some new bearings arrive and some 6mm Steel and Brass Rods also !

Gonna catch up on posts now and do a couple of glasses of wine hehe

Mike I will also catch up on emails this weekend, this week was very manic

But your Rig is looking good mate and as TheOne said, nice Toe 

Cheers

Sean.

[CLaNZeR]

MRAMOS,
steel on steel as the commtator is not good.

Try to use a graphite pencil or a graphite rod from
an old used zinc-carbon battery as one contact and put this
versus the steel.
Or glue a copper foil or alufoil onto the shaft and use this
versus the graphite pencil (graphite rod) contact.

You need the right dissimular metal contact points to get more spark RF power.

Are normal motor brushes any good placed with a gap obviiously to get the Arc? what are they made of ?

[Dingus Mungus]

@Mramos
Great replication! Thansk for helping out with the scope shots. no BEMF though...
I noticed you're using heavy 18 awg wire. How many feet of wire is in your coil?

@Clanzer
How long did your stepper motor winding robot take to make your coil?
Are you still planning to wind a denser coil? I'll trade you fresh spools for coils...


~Dingus

[hartiberlin]

Are normal motor brushes any good placed with a gap obviiously to get the Arc? what are they made of ?

Yes,these are also made out of high durable conductive graphite.
Use them and make a fine tip out of them so they just barely
contact the copper commutator plates and have a gap in the commutator
plates, so they make only contact not all the time, but in sparking pulses.