FM Concepts posts working video 4/7/2009

[wattsup]

Ceramic bearings.
http://bearingkinetics.com/ceramic/ceramic-bearings.htm

[DMBoss]

Hi All,
Can anyone suggest a particular bearing that will "spin freely" for a very long time with a moderate load on it?  Where can they be purchased?  Need part numbers.

I have in the past used old hard drive bearings ( light load) and they work ok but fail under a moderate load.

I also have used free spinning Go Kart bearings for heavy loads. They are big!  An oil lubrication is on the insides. No grease.

Magnetman:

Full ceramic bearings are the absolute least friction of any angular contact ball bearing.  And they work best (lowest friction) with NO lubrication, if your speeds are low.

Boca Bearings has them in stock, but they are not cheap!

http://www.bocabearings.com/

At any rate, you should get open bearings and certainly none with rubber contact seals!

DMBoss

[Thaelin]

   On the three pics of inserting the mags. Look down in the hole.
Is that the top of a magnet I see? More than one hole has the
same shinny in it.

thay

[TinselKoala]

   On the three pics of inserting the mags. Look down in the hole.
Is that the top of a magnet I see? More than one hole has the
same shinny in it.

thay

I think those are small holes in the bottom of the bigger holes. You would get this if you just put the plastic part on your drill press and drilled down to the table, as the drill point penetrates the bottom of the workpiece, but doesn't go all the way through to make a "through hole." They also may have been put there deliberately because it makes it a "hole" lot easier to remove the magnets, especially if they are a tight fit in the hole. The shiny bit in there might just be some glare off the plastic. Looking at the general construction, the shiny bits might even be metal chips from a different machining operation, carried in by the bit used to make the holes in the plastic.

I think.

Has anyone gotten the approved plans? Is there anything like this on the plans?

[0c]

Has anyone gotten the approved plans? Is there anything like this on the plans?

Plans currently require you to sign an NDA. PESWiki has the most prominent page for the project:
http://peswiki.com/index.php/OS:Magnet_Motor_by_FM_Concepts

CLaNZeR has the most comprehensive replication info I am aware of.
http://www.overunity.org.uk/showthread.php?t=378

But I think you will be disappointed, unless your main objective is to stir the pot.