I would like to thank everyone who responded to my inquiry with hints
and suggestions!
As I had mentioned, I had made a complete set of voltage and resistance
measurements. They were all "right-on." I could hear the brake click when
the brake release was pushed and the limit switches did not appear to be
open. I want to especially thank those who suggested that I listen for
motor hum with my ear to the tower and those that suggested that the rotor
may be "stuck" at the end of one of the stops.
To make a long story short, the rotor was at the end of the clockwise
rotation and I could hear a hum when either of the CW or CCW buttons was
pushed. I waited until we had some wind, which was this past Saturday, and
tried pushing the brake release several times followed by pushing the CCW
button(was at the end of the CW rotation) for about 15 seconds. It took
several series of this, but the rotor finally started turning. Maybe the
wind was just right.
Anyhow, it is working now and I would like to give a BIG thanks for all
of those that helped!!!!
73s,
Bernard, WA4OEJ
----- Original Message -----
From: "NØATH" <N0ATH@Charter.net>
To: "Bernard(wtrone)" <wtrone@comcast.net>; <towertalk@contesting.com>
Sent: Sunday, October 16, 2005 6:01 PM
Subject: Re: [TowerTalk] Sick Tailtwister
Barry, while the brake is released, can you detect any hum from the motor
indicating it is trying to turn? If yes, then you probably have a brake
problem.
All there is are the 4 springs and the pin that could be wrong. ( I think )
otherwise I would check my wiring - two or three times very carefully. The
motors are normally fairly resistant to failure. G,luk / Dave / NØATH
From: "Bernard(wtrone)" <wtrone@comcast.net>
To: <towertalk@contesting.com>
Sent: Sunday, October 16, 2005 2:26 PM
Subject: [TowerTalk] Sick Tailtwister
I have a sick tailtwister. It won't rotate either CW or CCW. I checked
the fuses, OK. I measured the voltage at the control unit with the cable
disconnected as per the manual, Voltages=OK. I measured the pin to pin
resistances as per the manual, resistances= OK. I tried a new motor start
capacitor, Nothing/ No Rotation. I can hear the solenoid click when I
depress the brake switch. With cable attached, brake button pushed and CW
pushed, I read about 18.4 VAC on the two terminals. About the same voltage
on the other two terminals with the bake button pushed and the CCW button
pushed.
I'm beginning to wonder if the brake mechanism might be broken. But,
before I take the tower down (it is a fold over), I would like to be sure
that I have checked everything that I can from the ground.
Any ideas?
73s
Bernard, WA4OEJ
_______________________________________________
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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