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Re: synchronous gap help (fwd)

---------- Forwarded message ----------
Date: Tue, 10 Jul 2007 18:03:22 EDT
From: FutureT@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: synchronous gap help (fwd)

In a message dated 7/10/2007 9:30:29 A.M. US Eastern Standard Time,  
tesla@xxxxxxxxxx writes:
Gary, Ameen, 
Ameen said he's using a 1/12 HP teletype motor.  I use only a 1/20  HP
teletype motor for my 3600rpm sync gap on my webpage.  My gap  also
uses a 3/8" thick G10 rotor, but it's 6.5" dia I think.  Mine is the  type 
the 85uF? starting cap and relay.  There are some smaller teletype  motors
out there, that are weaker.  But based on what my 1/20 HP motor can  do
I think Ameen should be OK with his design since he has 1/12 HP.
If Ameen's motor doesn't have the start cap, that would make it
somewhat weaker in starting torque, but I think it's worth the try.
My guess it that it will work out OK.  

I think  you're going to run into a problem using your relatively small
teletype  motor to spin-up such a heavy 3/8" thick disk.  I was barely
able to  get such a motor to spin a 09" thick x 6.12" diameter G10 disk
with just 4  brass acorn nuts electrodes, and it utterly failed to sync
with anything  larger.  I'd strongly recommend using a propeller gap if
using a  Teletype motor.  My SRSG  page:
http://www.laushaus.com/tesla/sync_gap.htm, and Terry  Blake's:

Regards, Gary  Lau

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