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From: bobperk90658@bellsouth.net
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: How cool is too cool?
Date: Fri, 14 Sep 2007 04:53:15 +0000
Message-Id: <091420070453.15848.46EA13BA000BD8C500003DE822230704929B0A02D2089B9A019C04040A0DBFC7059D0A9F0D010D@bellsouth.net>

I don;t have a Molliere chart in front of me at this moment, but the temperature at which moisture would flash out of the oil would be considerably lower at higher altitude, the higher the better.  Most all oil purification and filtering units employ vacuum chambers to flash out any moisture entrained in the oil.  So if you are running at a low oil temperature fly at a high altitude.

Bob Perkinson


-------------- Original message ----------------------

> 
> You guys, To risk being serious for a moment,
> Something that I find interesting is that many manufacturers are now going  
> in the opposite direction. They are drawing a partial vacuum in the crankcase.  
> This is good for 2-3 free HP on the top end. ALL the motorcycle manufacturers 
>  hve been doing this for years. (The technique is especially effective if 
> your  engine is turning 12,000+ RPM at max power!
> Bill Jepson


>