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Re: New pictures

Brent,

I'd love to have details on the 
motor modifications.  There's a friend of mine who keeps bugging me about 
synchronous gaps who also has a milling machine.  If nothing else, I can 
get him to "put up or shut up" :-).  I found a source of electrical 
motors -- HVAC companies.  They trash old furnaces all the time, but they 
often have good blower motors.  They are rated "furnace duty" though, 
which may not be the same as continuous.

Chip

P.S. I was going to just send this to Brent, but realized that the source of 
motors may be useful to others.


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"Of all tyrannies a tyranny sincerely  exercised for the good of its victims  
 may be the most  oppressive.  It may be better to live under  robber barons  
 than  under  omnipotent  moral busybodies,  The robber baron's  cruelty may  
 sometimes sleep,  his cupidity may at some point be satiated; but those who  
 torment us for own good  will torment us  without end,  for they do so with 
 the approval of their own conscience."    -   C.S. Lewis, _God in the Dock_ 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

On Sun, 6 Oct 1996, open_minded wrote:

> Tesla List wrote:
> > 
> > > Subject: New pictures
> > 
> > >From bert.hickman-at-aquila-dot-comSun Oct  6 13:15:23 1996
> > Date: Sat, 05 Oct 1996 12:41:54 -0700
> > From: Bert Hickman <bert.hickman-at-aquila-dot-com>
> > To: tesla-at-pupman-dot-com
> > Subject: Re: New pictures
> > 
> > Tesla List wrote:
> > >
> > 
> > Brent,
> > 
> > Thanks for the new pics. Nice detail shots on your rotary! Was the motor
> > modified to be synchronous or did it start out that way? Also, have you
> > noticed any performance improvements since converting to the smaller
> > electrodes and reduced quench times?
> > 
> > Safe coilin' to ya!
> > 
> > -- Bert --
> 
> 
> Bert -
> 
> 
>  The motor actually started life as a standard 1750 RPM design. I did the
> mod's on the armature to get it to run full synchronous (salient-pole)
> mode. I just picked up a new 3450 RPM motor which is going to replace the
> other one. Just got it apart and haven't had time to modify it's armature
> yet. BTW - I do plan on making details on this type of modification
> available. It isn't hard to do if you have access to a mill or a machine
> shop. The hard part was finding the proper measurement process to get
> the armature 'flats' the proper depth.
> 
> Haven't actually put power through the gap yet in this configuration. It
> ran fine with the old 3/8" tips though, so I expect that there will be
> *some* improvement. By doubling the BPS, I hope we can now light 60 to
> 80-watt light bulbs on the insulated table!!!!
> 
> - Brent
>