REFLECTOR: First Flight for N173RT

[HYTEC45 at aol.com]

In a message dated 5/11/2007 10:11:36 A.M. Pacific Standard Time,  
RDTRENT1 at chartermi.net writes:

I also have an engine  compartment cooler in series with the nose  cooler


May I suggest you put the two coolers in parallel.  Being in series  you add 
to the total length the oil must travel through the lines to get back to  the 
engine.  If you think about it, its at least 12 feet to and from the  front 
cooler each way, then add another 2-3' for the rear, and the oil has to  travel 
26-27' or more, plus going through the coolers to get back to  the engine.  
All this through what, a 1/2" I.D. hose, or even  less at the connectors?  This 
increases the friction, pressure and reduces  the flow rate.  The vernaItem is 
probably unseating to allow hot oil to  bypass the coolers due to the 
restricted flow. Should  be quick/cheep to convert to parallel, and I bet it will 
take care of  your problem, or help allot.  My engine(IO360C1C w/10:1) cooler has 
an  dedicated air source, and probably does 90% of the cooling due to the  
shorter path.  I run 187-195' in cruies, and never over 220' in a hard  climb 
out of hell.  I feel I don't even need the front cooler as it's  almost useless 
for heating anyway, and not much better for cooling on it's  own.
TEC 



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