[TowerTalk] Protecting screw contacts on rotor

donovanf at starpower.net donovanf at starpower.net
Mon Nov 20 19:19:02 EST 2006


Mike,

I've had excellent long term success with Ham-IV style rotors by replacing the stock terminal strip screws with stainless screws.  I've never waterproofed the connections.

I've never had a moisture related failure of the connections after over 20 years of using this technique on multiple Ham-IV style rotors.

73!
Frank
W3LPL

---- Original message ----
>Date: Mon, 20 Nov 2006 18:24:07 -0600
>From: Mike Miller <wa0zog at earthlink.net>  
>Subject: [TowerTalk] Protecting screw contacts on rotor  
>To: towertalk at contesting.com
>
>I'm getting ready to install the rotor on my tower, but wanted to 
>protect the contacts from corrosion and oxidation.  I'm using an older 
>style Ham-IV rotor, which has the screw contacts, not the plug.    I've 
>still got to clean up the housing, which shows some oxidation, but that 
>should be pretty easily done.  The screws are rusted, and could probably 
>stand to be replaced.  The rotor works just fine on the bench, and will 
>probably work just as well on the tower (fortunately it's at the base of 
>this tower and not the top), but I want to ensure it's continued 
>operation.  I don't really want to have to work on the rotor each and 
>every season.  The previous owner used a tuna can duct-taped to the 
>bottom of the rotor, but that looked sort of "rigged" to me, and I'd 
>like to avoid that, especially considering the extent of the engineering 
>that I've done on this installation.  Short of rebuilding the rotor 
>completely and replacing the screw terminal strip with the plug, does 
>anyone have a suggestion on how best to protect the screw contacts on 
>the bottom of the rotor?  Thanks for the help!
>       --Mike, WA0ZOG
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