[ARC5] Arc-5 screw removal

[Michael A. Bittner]

Ditto on Dennis' remark, and BTW, if you haven't been to the NMNA ya gota make the trip. Don't miss the PBY cutaway showing the whole radio setup.  Mike, W6MAB
  ----- Original Message ----- 
  From: Dennis DuVall 
  To: w4thq at cox.net 
  Cc: arc5 at mailman.qth.net 
  Sent: Monday, March 12, 2012 9:22 AM
  Subject: Re: [ARC5] Arc-5 screw removal


  Best advice I've seen in this looooong thread so far.

  Dennis  D. W7QHO
  Glendale, CA

  *********************

  On Mar 12, 2012, at 8:57 AM, <w4thq at cox.net> wrote:

  > I found this discussion very entertaining so I thought I would add a  
  > comment.
  >
  > Having volunteered for over six years at the National Museum of  
  > Naval Aviation and having restored GP, ARC-5, and other aircraft  
  > radios,  I have found that putting a drop of white vinegar on each  
  > screw head and letting it sit for five minutes before trying to  
  > remove it works most of the time.  The trick is to use a big enough  
  > drop so it flows around the head and seeps into the screw threads.   
  > On radios that have been in the water for a long time this technique  
  > frees up the calcium, etc. that is present.
  >
  > On an SBD that had been in fresh water for 65 years we removed every  
  > screw in a GP transmitter (up to 10-32) without shearing a single  
  > one.  Also we have found that a sharp rap on the end of the  
  > screwdriver handle while turning helps especially on the large screws.
  >
  > Experience in removing corroded and stuck fasteners goes a long way  
  > in helping the process.
  >
  > Good luck,     John W4THQ
  >
  >
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