Testatika small machine testbed

[Motorcoach1]

Does anyone see any problems with useing steel ballbearings in the hubs ? I set the space between the disks at 11 mm and moveing to 4 mm to increase static fields. how is everyone else setting theres , I useing 60cm disks (20 inches ) All other parts (screws and fastners are brass or aluminum due to magnatisim ) I made up some gold leaf static jars to study the flows around the disks these are very handy ! I used small babyfood jars. a plastic vial will work too. the leather belt is great when useing V gruve sheves and cheep 

[Peter]

Hello,

  i have compiled the jpg's from the old book that TheOne found at http://www.electrotherapymuseum.com/2007/ElectricalInfluenceMachines/index.htm
to a word document, so you can print it out (see attachement).

Greetings
Peter

[Steven Dufresne]

Mike,
Nice work! Thanks for showing us. It helps keep us builders going when we see we're not alone.

Does anyone see any problems with useing steel ballbearings in the hubs ? I set the space between the disks at 11 mm and moveing to 4 mm to increase static fields. how is everyone else setting theres ,

I keep mine as close as possible to get maximum field strength, but the wobble is my limiting factor.

I useing 60cm disks (20 inches ) All other parts (screws and fastners are brass or aluminum due to magnatisim ) I made up some gold leaf static jars to study the flows around the disks these are very handy ! I used small babyfood jars. a plastic vial will work too. the leather belt is great when useing V gruve sheves and cheep 

I made a set of pulleys and used a small diameter round file to make the groove. The bearing system didn't work out though. It let the disk tilt over. See:
http://rimstar.org/equip/estatmb/mk1/estatmbmk1.htm
-Steve
http://rimstar.org

[Motorcoach1]

Thank you Steve , the 60cm disks are mounted on the hubs with 2- 608 bearings , I have a little wobble thats due to I made them on my drill press but can be adjusted by drlling set screws at 120degrees around at 3 points. the drive at the bottom is also bearinged at both ends and the pully on the right is an idoler for the belt to go to the back disk , this turns in the oppisit direction Like on the Jorge machine.  i origanoly made round pullys to see where they would follow and the belts kept comming off. so I switched to the V gruve and the leather belt (square ) and the problem solve with out haveing the put a lot of tension on the pullys and belt. the added tension also put more work on the motor causeing higher amp draw. now runs cool in long run tests and my power supply stays nice and cool too. My next step is to put a thrust bearring between the disks to get them very close and not worry about the hubs rubbing. my goal is to eventualy eliminate the motor if possible or incorperating it into the hubs one neg. and the other Pos. then ther would be no drive belt. this could be done useing stepper motor parts and be brushless. the mag field would then be in the vortex equaly neg. and pos. to the disk reference.  By the way thank you very much for your time converting the book to word and posting this valuble information. I'll be working on the collectors tonite , bought a nice cross vice at Harbor Freight last nite for the drill press, this will help in makeing the close adjustment of the collectors ( oval holes )

[Steven Dufresne]

Thank you Steve , the 60cm disks are mounted on the hubs with 2- 608 bearings , I have a little wobble
...
By the way thank you very much for your time converting the book to word and posting this valuble information.

It was Peter who did the converting. See his message above.
-Steve
http://rimstar.org