Newman machine replica

[CLaNZeR]

@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

I ran it pretty slow, the steppers were running at a pulse of 140us which is 406mm travel a minute, but you can pulse those small steppers upto a max of about 35us pulse width 1625.6mm a minute.

The coil was wound 85 rotations to the middle axle support rods, then skipped 17mm and wound another 85 rotations ats 0.25mm a rotation.
Too late to do the maths this end, but it did not take long to nearly do 2000 winds even at slow speeds LOL

Let me try it out this weekend and if it looks promising I will be more than happy to wind a coil for any of the guys that have shown interest in this thread so far and post it out to them. But lets get it right first!

Got to use up this 3.2kg spool of wire somehow LOL

Regards

Sean.

[CLaNZeR]

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.

Thanks Stefan

Will try with wire first but have some old motors here that I can strip the brushes out of and put on the grinding wheel.

Time for bed now as knackered LOL

Regards

Sean.

[Dingus Mungus]

@Clanzer
Well thats sounds down right convienient...
I just got 150 feet of 26awg that I'll use to make my first pot motor replication,
but as you said once we start getting it "right", I'm hoping to send you another
multi killogram spool in exchange for a nice big coreless coil base like yours. I just
hope I don't get in to TPU replication in the mean time! It's like crack I tell you!

THANKS TO ALL FOR YOUR HARD WORK!
~Dingus Mungus

[CLaNZeR]

Grrrrrrrr DO NOT Wind a Coil as below because it causes a not so nice Sticky point/spot



The rig is finished below but shame about the coil.



Have a look at the video attached and you will see that when the ring magnet is vertical and I touch the Comm, then yep sure enough it kicks away, but because of the gap in the middle of the coil I get a nice sticky spot.

Off to wind a new one at a angle maybe hehehe

Regards

Sean.

[TheOne]

i am not sure if its related to the coil, i think your communicator is 90 degree offset?