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Message-ID: <4ACA6971.2070309@gmail.com>
Date: Mon, 05 Oct 2009 16:47:29 -0500
From: Dave <david.staten@gmail.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Seepage, no more.  Oil system
References: <list-3874613@logan.com>
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Chris,
     What would be the possibility of getting/salvaging a bypass valve 
off a mazda cooler? something that sends cold thick oil though a bypass 
to the exit, and not through the cooler. As it heats up it opens slowly 
letting thinner, hotter oil down through the cooler, and once its HOT 
oil, it ALL goes through the cabin heater. This does add complexity to 
an already problematic and may not be the cure, but it gives you 
additional oil cooling capacity which as we both know is a larger 
percentage of the heat shedding equation that in non-rotary engines..

    If this isn't an option, then you could plumb (like you are asking) 
the front cooler to use hot coolant for cabin heat, and in my best 
estimation will work just fine for this function. The big outlet on the 
rear iron is the traditional heater outlet - its the hottest coolant... 
the return on a stock engine was on the water pump housing. The front 
oil cooler is more than robust enough to manage the thinner, lower 
pressure aqueous coolant.

Dave