Potatogunman's newman machine

[Eddy Currentz]

is there anybody thats use's Skatboard bearings?   what is the I.D  and the O.D of these bearings ?    im  hoping for a 3/8 I.D  .... so I could use a 3/8  steel rod

Would Stainless steel rod work as well ?

Skateboard bearings are OK, but they're an oddball size to find shafts for. 3/8 is a good universal size to use. Bearings are easy to find and there are a lot of variety of shafts.
You don't want a steel shaft since it will distort the magnetic field. Aluminum is cheap and easy to use and is one of my favorites. Stainless would probably work but it's very expensive and unnecessary.
I take it back what I said about concentrating the windings around the center. 
I wrapped my windings a little tighter today trying to tidy up a bit and it made a big difference in the efficiency of the motor. The motor runs OK but drains the battery like a normal motor. I only got about 3 hours on a 9 volt where I usually get around 10.
So I spread out the coil so it was taller than the rotor magnet, which then restored it's original efficiency.
There is definitely an optimal wrap size for these motors. I don't know what it is yet but I'm going to try a few different configurations.

Ted

[potatogunman]

Well i stripped my  newman machine  down    ..i m   going to start over...this week im going to get some good high speed 3/8 I.D  bearings and a Shaft.

i think i can score a psc of Stainless rod  316 grade   for free....  i  guess it would work seeing it dosent  Magnetize....but it will conduct electric!!

back to the drawing board

[potatogunman]

hello all!!!   i ve  finally made my neuman machine ive tryed wiring it up the same way as that schimatic on the replica page  here is a drawing of how its run at the moment
is it right or is it operating as a regular moter

ill post a  video tonight   

[RunningBare]

  two seperate coils on the newman motor!? thats not my understanding, or is this a variation?

I meant electrically seperated.

[potatogunman]

sorry for the mix up   at the moment the red coil on my drawing is disconected ,im  just running  the blue one,  I will post a clip later tonight for you all to see!
so far my battery readings are -- 

7:00am  this moning       1.388   volts

"now"  5:30  (canadian time)       1.265 volts

in  10 1/2  hours   it consumed    0.123 volts           on a D battery

i wish my ipod could do that  hehehehe