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Re: [TowerTalk] HAM IV won't reverse direction after reachind end of tra

To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: Re: [TowerTalk] HAM IV won't reverse direction after reachind end of travel stop
From: Kevin Balmforth <n6er@yahoo.com>
Reply-to: Kevin Balmforth <n6er@yahoo.com>
Date: Thu, 9 Jan 2014 08:06:29 -0800 (PST)
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Yes,  in this failure more, the ring gear tang is up against the pivoting lever 
arm that opens the CW end-of-travel switch.  In thinking about it some more, I 
wonder if the lever arm is loose vertically such that the tang is pushing it up 
(as well as laterally) and wedging up under the lever arm and against the drive 
pinon gear, so the ring gear can't back out when the motor is reversed.  I'll 
have to check when I get home from work tonight...


________________________________
From: Wayne Kline <w3ea@hotmail.com>
To: Kevin Balmforth <n6er@yahoo.com>; "towertalk@contesting.com" 
<towertalk@contesting.com> 
Sent: Thursday, January 9, 2014 7:10 AM
Subject: RE: [TowerTalk] HAM IV won't reverse direction after reachind end of 
travel stop



Kevin
    Tow thing   you said " it binds up mechanically " ? but if you  OPEN  up 
the Limit switch it works.
 
The    TANG protruding inside the ring gear is the mechanical lever to open the 
limit switch, in it's Stop binding condition, is the tang engaged in the CW 
Stop switch ( it should be open and the CCW switch should be   closed ? )
 
Wayne W3EA 
 
 
 

> Date: Thu, 9 Jan 2014 06:24:18 -0800
> From: n6er@yahoo.com
> To: towertalk@contesting.com
> Subject: [TowerTalk] HAM IV won't reverse direction after reachind end of 
> travel stop
> 
> I have an old Ham IV rotator that binds up mechanically and won't reverse 
> direction after stopping at the CW stop. No problem at the CCW stop. No 
> problem if the ring gear is pulled and I manually open the stop switches. Any 
> ideas?
> 
> 73 - Kevin N6ER
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