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Re: synchronous gap help (fwd)
---------- Forwarded message ----------
Date: Tue, 10 Jul 2007 18:03:22 EDT
Subject: Re: synchronous gap help (fwd)
In a message dated 7/10/2007 9:30:29 A.M. US Eastern Standard Time,
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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