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Re: ASRSG motor help

Original poster: FutureT-at-aol-dot-com 

In a message dated 6/27/04 11:59:33 PM Eastern Daylight Time, 
tesla-at-pupman-dot-com writes:


I used a rather weak vacuum cleaner motor in an ARSG and got about
5000 rpms.  I then tried a stronger vacuum cleaner motor and
got about 6000 rpm or so.  This was my 12 point series quenching
rotary that I used on the magnifiers, not that it gave any benefit
over a normal ARSG rotary.  Of course the rotor size and air
resistance will affect the ultimate RPM.  The strong motors usually have
the dual compressor system attached in the vacuum cleaner


> >Original poster: "steve" <steve_vance-at-cablelynx-dot-com>
> >
> >Hi list,
> >  I need some help trying to figure out a motor's RPM. I plan on building
> >400 bps ASRSG using a motor out of a vacuum. I taped a small piece of
> >plastic on the end of the shaft like a propeller then I powered it up
> >under florescent lighting using a variac. Someone please correct me if I'm
> >wrong, or tell me if I'm right on this. At about 15% power I get a pattern
> >with 8 sections. I believe this should be around 800 RPMs. At 22% I have a
> >pattern with 4 sections. I believe this is around 1800 RPM. At 28% I have
> >sections, I figure 3600rpm. At 32% I get another 2 section stationary
> >pattern and again at 36%. What rpm would 32% and 36% be? I need about 6000
> >RPM.
> >
> >Steve Vance
> >
> >
> >