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Well with 3 coolers already, I didn’t want to add a heater
core and all the plumbing – I may move my scavenge point from oil cooler
to water radiator as it is below the engine (uphill for warm air) and closer to
the firewall (fewer corners to turn). I picked the oil cooler because at the
time my oil temp was higher than water temp – now it’s the other
way around … also the outlet of oil cooler as installed is less likely to
get contaminated with exhaust fumes.
Jeff
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Tuesday, December 15, 2009 4:10 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Oil cooler
That's was I thought you might say. I built a cabin
heater using an early Mustang heater core and a 6" muffin fan. It
works ok, but is a bit heavy. Looking for something better.
On Tue, Dec 15, 2009 at 3:01 PM, Jeff Whaley <jwhaley@datacast.com> wrote:
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
Is
the black tube on the backside of the oil cooler for cabin heat? How well
does that work?
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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