Mailing List flyrotary@lancaironline.net Message #14920
From: Al Gietzen <ALVentures@cox.net>
Subject: RE: [FlyRotary] fluidyne oil cooler
Date: Thu, 6 Jan 2005 12:19:50 -0800
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message

You should be able to get flow rate; pressure drop; heat rejection rating from Fluidyne.  Based on my calcs, it would be good to about a steady 120 hp in a rotary, if you get good air flow through it.

 

You may have to get in touch with their “Performance” Group (or whatever they call it).  It is in CA, maybe in San Bernadino.  It might be good to know the oil side pressure drop for 12-15 gpm flow rate.

 

Al

 

Subject: [FlyRotary] fluidyne oil cooler

 

Greetings,

 

I got the new oil cooler, and I have my doubts about the size.  It will be easy to fit, but will it cool?  The thing is certainly built like a tank, and it didn't even have any packing in the box.  I guess Fluidyne doesn't figure it needs any special treatment.  The tubes do have nice turbulator fins inside, so I have no doubt that it will be far more efficient than the evap core was.  Will it be twice as efficient???  I guess I'll find out.   Specs follow.

 

Fluidyne DB-30517

 

overall dimensions

12.625” wide  x  5.875” tall  x  3.875” thick

 

Core dimensions

9.375” wide  x  5.875” tall  x  3”  thick  (165 cu in volume)

 

Weight- 7 lbs.   

Factory tested pressure- 175 psi

 

 

For reference:

 

Evap- core dimensions

10.5” wide  x  8.875” tall  x  3.625” thick  (338 cu in volume)

 

Stock 2nd Gen- core dimensions (found in archives)

19.5” wide  x  4.5” tall  x  2” thick  (176 cu in volume)

 

Rusty

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