Mark, yes that is for cabin heat. It provides some heat but not enough; but as said before, my oil return temp is only 150F and I’m trying to force warm air to go around corners and downhill through a 2” hose.  Needs improvement as it’s getting cold up here.   Jeff

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Tuesday, December 15, 2009 3:49 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Oil cooler

 

Jeff,

 

Is the black tube on the backside of the oil cooler for cabin heat?  How well does that work? 

 

Mark

On Tue, Dec 15, 2009 at 2:16 PM, Jeff Whaley <jwhaley@datacast.com> wrote:

Al, no I do not measure “before and after”; it’s measured at block output near standard oil filter pedestal and is feed to PSRU input … see attached (this photo  shows the first  cooler input, the pressure sender and the return line from second cooler) … if I understand the oil flow correctly, this is after the coolers.

My max oil pressure was 80 psi when I had one cooler and is still max 80 psi with 2 coolers – typical operating pressure is 75 psi at 5500 rpm.

Jeff

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al Gietzen
Sent: Tuesday, December 15, 2009 2:05 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Oil cooler

 

Mark, I have two of the DB-30416, single-pass coolers … no measureable pressure drop with 2 in series … I’m seeing 80 psi max with the 13B.

JWW

 

What do you mean “ . … no measurable pressure drop”?  Are you measuring pressure before and after the 2 coolers?

 

Al G

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