[GreenKeys] Model 14 typing errors - lubrication problem? Misadjusted? Wrong selector magnet wiring?

[Richard Knoppow]

----- Original Message ----- 
From: "Jim Haynes" <jhhaynes at earthlink.net>
To: "Gerry Block" <gblock at sbcglobal.net>
Cc: "John Nagle" <nagle at animats.com>; 
<greenkeys at mailman.qth.net>
Sent: Monday, September 03, 2012 9:45 AM
Subject: Re: [GreenKeys] Model 14 typing errors - 
lubrication problem? Misadjusted? Wrong selector magnet 
wiring?


> OK, but SAE30 is too heavy for Teletypes.
>
> Just for amusement, since the oil topic comes up 
> periodically, I remember
> the DEC maintenance instructions said for Teletypes to use 
> a 50:50 mixture
> of oil (don't remember if it was SAE30 or SAE20) and STP. 
> Gives your
> machine the racer's edge.
>
> jhhaynes at earthlink dot net

     Automobile engine oil has a lot of additives in it for 
various purposes that may not be desirable for a general 
purpose lubricant.  Highly refined petroleum based oil can 
be gotten from Nye lubricants, do a web search for them. 
Nye sells lubricants which vary from watch oil up to very 
viscous damping oils.  STP, mentioned in another post, 
contains 50 weight oil with viscosity enhancers, mainly 
zinc.  It forms a sort of extreme pressure lubricant with 
motor oil. I have no idea if this is desirable for this 
application.
     Three-in-One oil, in the BLUE can is 20 weight 
paraffinic machine oil and is suitable for general use.  Do 
not use the RED can stuff, its a mixture of solvent and 
naphthenic oil which is not a very good lubricant.  Its 
meant mostly for getting stuff unstuck.


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