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Date: Thu, 05 Apr 2007 21:47:48 -0400
From: Chad Robinson <crj@lucubration.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Sealing Soldered Connections
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Allen Slominski wrote:
> Years ago when building a Westsail, I used a black goop specifically 
> manufactured for sealing electrical connections.  It was similar to 
> the tool dip stuff, I think.  Anyway it did come in a small can with a 
> brush attached to the screw-on lid and worked well. 
>  
> Chad, I'm curious about which dielectric grease you are referring to?  
> Also, Corrosion Block (I think that's the name) in an aerisol can will 
> kill any corrosion anywhere.  It is non-conductive also.  I spray it 
> in the motor windings of saws and such if they've been left outside. 
>  
I most recently am using a tube of stuff from SteinAir, $3.00, but I 
don't have any loyalty to any particular brand. Readers should note that 
this is NOT normal grease, it's specifically designed to be 
non-conductive. Sounds odd in an electrical connection, but it avoids 
shorts between pins in a connector. It prevents corrosion so the 
metal-on-metal portion of the connection doesn't have issues. You can 
liberally coat (or even "pot") a connector with the stuff and basically 
never have to worry about corrosion again. It does make one HECK of a 
mess, though - it's hard to clean out. Not that you ever really need to...

Regards,
Chad