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Re: why such a large motor???

Subject: 
        Re: why such a large motor???
  Date: 
        Thu, 3 Apr 1997 07:20:02 -0700
  From: 
        "DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net>
    To: 
        "Tesla List" <tesla-at-pupman-dot-com>


To: William Noble

We could probably get by with a 1/2 HP motor but there is a reasonable
amount of wind resistance at 1725.  We use the 3/4 HP because we get
them
for only $8.50 more than the 1/2 HP units and they come to speed in
around
1 second.  This works well on a commercial machine when the museum is
doing
a lot of demos and needs to turn the RSG off and on many times during
the
course of their demos.

DR.RESONANCE-at-next-wave-dot-net


----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-poodle.pupman-dot-com
> Subject: why such a large motor???
> Date: Tuesday,April 01,1997 3:23 AM
> 
> Subject: 
>         RE: RSG -- rotary spark gap - why such a large motor???
>   Date: 
>         Tue, 1 Apr 97 04:31:51 UT
>   From: 
>         "William Noble" <William_B_Noble-at-msn-dot-com>
>     To: 
>         "Tesla List" <tesla-at-pupman-dot-com>
> 
> 
> why do you use a 3/4 HP motor on the rotary gap you describe - it
> doesn't seem 
> like there would be much wind resistance at 1750 RPM (which as you know
> is 
> really 1800 RPM with some slippage to allow for load) - it would seem
> that a 
> tenth or even a hundreth horsepower motor would be more than adequate -
> there 
> is no other drag beyond the wind resistance/fan effect is there???
> 
> -----Original Message-----
> From:   Tesla List 
> Sent:   Friday, March 28, 1997 5:14 AM
> To:     tesla-at-poodle.pupman-dot-com
> Subject:        RSG -- rotary spark gap
> 
> Subject: 
>         RSG -- rotary spark gap
>   Date: 
>         Fri, 28 Mar 1997 10:06:08 -0700
>   From: 
>         "DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net>
>     To: 
>         "Tesla List" <tesla-at-pupman-dot-com>
> 
> 
> A 5/8 inch thick G-10 glass laminate makes a good rotor disc.  For 5-15
> KVA
> systems use a 1725 RPM 3/4 HP motor equipped with 10 electrodes on a 12
> in.
> dia. disk.  3450 RPM seems to overquench.  We use 1/2 dia. brass thru
> holes
> [Bill]  SNIP------------------