Re: [APML] Baffle tube grease

[astropix@att.net]

> "We use Dow Corning BR2+ grease on the primary baffle tube.  The main 
> thing you want to look for is a grease that will not run in high 
> temperatures and does not freeze or thicken up in cold weather."

 Lorenzo... following this advice, and my own personal experience with a vast 
array of lubricants over many years... (I'm a professional grease-monkey :-)

 Use a general purpose chassis lube with a *synthetic* base. The synthetic 
based lubes have a very low coeffecient of friction, the ultimate viscosity to 
temperature index, and resist oxidation far better than conventional mineral 
based lubricants. They also have very little odor, another concern in your 
application. 

 These synthetic greases are readily available at most auto parts stores and 
come in tubes to be installed in grease guns. There are two standard tube 
sizes, buy the smaller one if possible. This will be a lifetime supply for 
telescope projects... this stuff works on focusers and just about any other 
moving part requiring lubrication. Mobil makes one that is red in color and has 
all the attributes mentioned... sorry I don't have the exact part # but it 
should easy to find this stuff or something similar.

  I also suggest that you completely remove any remaining original lube... 
sometimes compatability issues can arise when mixing lubricants that leads to 
increased oxidation, viscosity breakdown and even metal corrosion.

 Hope This Helps...

 Geoff Powers

--
http://home.att.net/~astropix/


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