Re: [PSUBS-MAILIST] motor seals

[TeslaTony@aol.com]

In a message dated 8/15/00 2:52:32 PM Pacific Daylight Time, 
protek@shreve.net writes:

> Jon,
>       Not a dumb question at all.  If you use a metal, even a non-ferris 
>  metal the moving magnets will create small currents in the metal that will 
>  basically heat the metal taking energy from the system.  A ceramic or 
>  non-conductor will prevent this effect.
>  
>  GB
>  
The loss through heat may be a problem, but something else to consider is 
that not very small electromagnetic fields get generated too, slowing the 
magnets down and making your motor work harder to get up to the speed you 
want generating more fields and causing more headaches than it's worth.

Anthony