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Re: DC motor (fwd)

---------- Forwarded message ----------
Date: Mon, 23 Jul 2007 10:28:50 -0700
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: DC motor (fwd)

Hi Scott,

I'm not sure where to round up DC Motors, but considering the low weight 
propeller gap, 1/8 to 1/4 HP would be about ideal. Because a low HP is 
needed, you should be able to find a DC Motor in the speed range 
necessary. It will likely be a 5V, 12V, 24, or 90V motor as standard. I 
like the higher DC Voltages myself to trade the current aspect.

Obviously, check eBay for something suitable. Back when I ran a DC 
motor, I simply built a rectifier where I inserted a variable 0 to 120 
Vac from a small variac (thus I could vary the DC voltage and motor 
speed). Pretty simple and it worked without a glitch. Unfortunately, the 
gap sucked! I built a spinning pipe gap back then. The idea was to spin 
pipes across two stationary electrodes one above the other with 
stationary separation of 5" using about 6" rotating pipe lengths.

"If" you can't find a suitable DC motor, contact me offlist. The motor I 
used for that gap I still have in the garage. It hasn't been run since 
that gap. Just sitting there waiting for an application.

Take care,

>>Just out of curiosity, where are some good places to get DC motors
>>suitable for ASRSG?