[ARC5] [BoatAnchors] BC-348 Backlash/Play

[Richard Knoppow]

----- Original Message ----- 
From: "Arden Allen" <gumbear at pacbell.net>
To: "David Stinson" <arc5 at ix.netcom.com>; "ARC-5 List" 
<arc5 at mailman.qth.net>; <milsurplus at mailman.qth.net>; 
<boatanchors at theporch.com>; <boatanchors at mailman.qth.net>
Sent: Friday, April 26, 2013 1:58 PM
Subject: Re: [ARC5] [BoatAnchors] BC-348 Backlash/Play


>> ......I've been using Mineral Spirits and it has helped,
> but is there anything better I might try?
>
> I've found mineral spirits do a better job than the exotic 
> ($$$$)
> formulations.  Also, it works longer because its 
> evaportion rate is slower.
> Naptha would be good also.  You might try drawing some of 
> the disolved gunk
> out by slippint pieces of typewriter paper, I mean printer 
> paper (my age is
> showing), between the split gear halves.
>
> Arden Allen
> KB6NAX


     FWIW, Mineral Spirits or White Spirits are also known 
as Stoddard solvent. Stoddard solvent was invented in 1928 
as a dry cleaning solvent to replace the naphtha and other 
more inflammable solvents used at the time. If the odor is 
familiar its because dry cleaned clothes often have a 
residual odor of Stoddard solvent. I think other materials 
have supplanted it in clothes cleaning but it may have come 
back into use with the banning of chlorinated hydrocarbons.
     Also, there are two classes of solvents: polar and 
non-polar. Polar solvents are soluble in water like alcohol, 
non-polar solvents do not dissolve in water like gasoline, 
benzene, etc. The right kind of solvent is needed for the 
material one wants to dissolve. For oils and greases one 
needs a non-polar solvent.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com