REFLECTOR: One or Two oil coolers?

steve korney s_korney at hotmail.com
Fri May 11 21:47:11 CDT 2007


Maybe... But at 8000 ft., your only making about 135 horse power... Just a 
little more then a O-290  at sea level...That's why one oil cooler works for 
you... (NOTE)  That 230 HP that Lycon talks about is computer corrected (not 
actual) for sea level and standard day at 2800 RPM's...


Best... Steve




----Original Message Follows----
From: "Velocity" <velocity_az at cox.net>
Reply-To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
To: "'Velocity Aircraft Owners and Builders list'" <reflector at tvbf.org>
Subject: Re: REFLECTOR: One or Two oil coolers?
Date: Fri, 11 May 2007 16:18:28 -0700

IO360-C1E6 with 10:1 pistons (from Lycon in Visilia CA - dynoed at 230 hp) -
173FG - 1 cooler in front - summer flying in AZ I watch my climb rate to
keep oil temps below max, but after level off oil temps drop to 200-215. In
winter (in AZ) oil temps 180-200.

Kevin

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Brian Michalk
Sent: Friday, May 11, 2007 4:12 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: One or Two oil coolers?

What is your compression ratio?

Are all the high compression guys running two coolers?

Ron Brown wrote:

 >
 > I agree with Scott - one oil cooler is enough.
 >
 > I got one cooler mounted up front.  Works great with my IO 360 200 HP.
 > Has for 330 hours.  As I have mentioned before, it can run hot if take
 > off right after shutting down like picking up Young Eagles.
 >
 > Also works great on those long taxi runs at Oshkosh and Sun-n-Fun.
 > 320-330 degrees is the norm on the ground and in cruise - I have my
 > high oil temp alarm set at 360.  If it goes off, I lower the nose a
 > bit, pull back on the power a bit, and we keep on climbing to cruise
 > altitude (8000 ft.)  I cruise at 155-160 kts, 2600 rpms, 8 GPH, LOP.
 > One cooler will do the job if installed correctly.
 >
 > There's only one cooler on most other airplanes - I don't know why the
 > Velocity got stuck with two???
 >
 > Ronnie
 >
 >     ----- Original Message -----
 >     *From:* HYTEC45 at aol.com <mailto:HYTEC45 at aol.com>
 >     *To:* reflector at tvbf.org <mailto:reflector at tvbf.org>
 >     *Sent:* Friday, May 11, 2007 6:32 PM
 >     *Subject:* Re: REFLECTOR: First Flight for N173RT
 >
 >     In a message dated 5/11/2007 2:05:37 P.M. Pacific Standard Time,
 >     scott at tnstaafl.net <mailto:scott at tnstaafl.net> writes:
 >
 >             I'm in complete disagreement with TEC.   One cooler will
 >             do fine for a 200HP IO360 if its installed correctly
 >
 >
 >
 >             I also have an engine compartment cooler in series with
 >             the nose cooler.
 >
 >
****************************************************************************
************************************
 >     Wow, You are in complete disagreement with me, apparently on both
 >     my suggestions regarding oil coolers,as you say one is good
 >     enough, yet you apparently have two. Hmmmm.
 >     TEC
 >
 >
 >
 >
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