[GreenKeys] KS-7470

[Richard Knoppow]

     Two possibilities:  One is Microil made by Kano Labs and described 
as instrument oil.  See their web site for details. Also, most oil 
companies make "R&O Turbine Oil"   R&O means it has additives to prevent 
rust and oxidation.   Turbine oil is recommended as a general purpose 
fine machinery oil, especially for electric motor bearings.  It needs 
agitation from the bearing so is not a substitute for grease.  There are 
a number of synthetic greases made for aircraft use under names like 
Aeroshell No.7.  A grease with similiar specs is specified by Collins 
Radio for the cams and gear train in the R-390A.   There are also fine 
synthetic (silocone based) oils and greases available at hobby shops 
that specialize in model trains.   These do not gum up with age but may 
not be as good as lubricants as highly refined petroleum based oils like 
Microil or the turbine oils.   Turbine oils are usually specified with 
ISO numbers.  No.46 is about equal in viscosity to SAE 20 weight.  
Normally, these are sold in 55 gallon drums but are also available in 
small amounts with some searching.  One source says Grainger carries it.

On 6/12/2015 11:24 AM, Jim Haynes wrote:
> Speaking of gumminess, we know that KS-7470 is not really good around the
> plastic tubing that was used in Model 28s to enclose the wire bundles.
> They get noticeably sticky.
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL