X-Virus-Scanned: clean according to Sophos on Logan.com From: "steve Izett" Received: from mail-pa0-f49.google.com ([209.85.220.49] verified) by logan.com (CommuniGate Pro SMTP 6.1c2) with ESMTPS id 7427959 for flyrotary@lancaironline.net; Wed, 21 Jan 2015 09:16:38 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.49; envelope-from=steveize@gmail.com Received: by mail-pa0-f49.google.com with SMTP id fa1so1519683pad.8 for ; Wed, 21 Jan 2015 06:16:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:content-type:message-id:mime-version:subject:date:references :to:in-reply-to; bh=eI3Z5VQ4B6oUwAcsK7UcRYKtAiQ9JucSdAVVYI6Jusk=; b=vyFig/3QT1q4NnJQ/7674zv1TtFgI2FZLDPsSJXTwurG8rwbAY2nYwr1T1+VXO1H3W 6r1flFKTIST7WVgwwoiP4VSKfSsHuY44G87L3evNWcx60/7lrD4QlvOaH5Q5qsM1fAff bG65KpIr2dj7jfcx1rYT9UK3rGzuaxYCQSCLt+NtDfD3bsZE7GK0VkyeKrdk3k9u/x8R OrSAWt7EZQ0ju1fV8QqjhCrJJwnw9wLFXkXdLPvThobHCwGwytcDPWldRGCkk7jKe6Sj Kv8Dvh0QB9u2wEieTTuVLz1o6RroDGUEfFZOFiU+mibEAiJuvvbt7jyRcG/qT+xyfVsO nk6A== X-Received: by 10.69.19.171 with SMTP id gv11mr15034997pbd.16.1421849762372; Wed, 21 Jan 2015 06:16:02 -0800 (PST) Return-Path: Received: from [10.1.1.4] (124-148-106-162.dyn.iinet.net.au. [124.148.106.162]) by mx.google.com with ESMTPSA id c2sm3258818pdi.25.2015.01.21.06.15.58 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 21 Jan 2015 06:16:00 -0800 (PST) Content-Type: multipart/alternative; boundary="Apple-Mail=_B30BB238-3FB2-4D44-BFD2-D8A779257163" Message-Id: <93A86F3B-83A2-402C-BD32-2747C202B9A0@gmail.com> Mime-Version: 1.0 (Mac OS X Mail 8.1 \(1993\)) Subject: Re: [FlyRotary] Re: Cooling Date: Wed, 21 Jan 2015 22:15:55 +0800 References: To: Rotary motors in aircraft In-Reply-To: X-Mailer: Apple Mail (2.1993) --Apple-Mail=_B30BB238-3FB2-4D44-BFD2-D8A779257163 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Thanks I=E2=80=99ll see if I can work out where the air is flowing. Steve > On 21 Jan 2015, at 10:09 pm, Ernest Christley = wrote: >=20 > I'm not sure this fits here, but it is a surprising lesson I learned = and I'd like to pass it on. My setup had a radiator on the right side = of the cowl. The opening was just a few inches behind the prop, and the = exit was the traditional opening at the bottom. I could not get it to = cool sufficiently at idle even on a 60 degree day. I finally figured = out the problem when my manifold pressure line melted on the top LEFT of = the engine bay. >=20 > Air was being pushed in by the prop. As it left the radiator, it hit = the firewall and turned left. The momentum carried it across the red = hot muffler, straight past the exit opening and back up the other side = of the engine. Basically, I had turned my cowling into a convection = oven. The solution was a simple baffle to scoop the air out the exit. = At 1500 RPM, the temps would stabilize at 190 on a 90 degree day. = Idling faster or slower would increase temps. >=20 > Moral of the story, track the airflow all the way out of the plane. >=20 >=20 > On Tuesday, January 20, 2015 6:04 PM, Stephen Izett = wrote: >=20 >=20 > Thanks Jeff and Neil > Steve Izett >> On 21 Jan 2015, at 5:45 am, Jeff Whaley > wrote: >>=20 >> Steve, my setup will cool on the ground <80 F OAT provided that = engine rpm is > Both my oil air intake and radiator air intake plenums are within a = few inches of the prop. >> If you open the throttle during stationary ground operation you = should expect it to overheat. Stationary engine dynamometers have HUGE = radiators/coolers with ducted fans. >> Jeff >> =20 >> From: >> Neil Unger > >> Subject: >> Re: [FlyRotary] Cooling >> Date: >> Wed, 21 Jan 2015 07:39:29 +1100 >> To: >> Rotary motors in aircraft > >> = >>=20 >> = >> Steve, I can run full noise on the ground with no heating problems, = but then I do have 900 cub inches of cooling. 600 for water and 300 for = oil. I did insist that PWR make a rad that WILL cool. It does = regardless of OAT. I had to put a thermostat in to get the water over 60 = degrees. I have too much cooling. Neil. >>=20 >> -----Original Message----- From: steve Izett >> Sent: Tuesday, January 20, 2015 6:35 PM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] Cooling >>=20 >> Hi Guys >>=20 >> So what are your experiences of running on the ground. >> Do your setups cool on the ground at any throttle setting? >>=20 >> I=E2=80=99m still not in a position to open the throttle as Im in a = garage at home. >> After start and running at about 1500RPM (engine) with an OAT 90+ >> temps slowly rise till i shut it down before it gets past 210F. >> This takes probably 20 Minutes. >>=20 >> What do you guys see on the ground in your various climates and = cooling setups? >>=20 >> Steve Izett >> Perth Western Australia >> =20 >> This message, and the documents attached hereto, is intended only for = the addressee and may contain privileged or confidential information. = Any unauthorized disclosure is strictly prohibited. If you have received = this message in error, please notify us immediately so that we may = correct our internal records. Please then delete the original message. = Thank you. >=20 >=20 >=20 --Apple-Mail=_B30BB238-3FB2-4D44-BFD2-D8A779257163 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Thanks
I=E2=80=99ll see if I can work out = where the air is flowing.

Steve
On 21 Jan 2015, at 10:09 pm, Ernest Christley = <flyrotary@lancaironline.net> wrote:

I'm not sure this fits here, but it is a surprising lesson I = learned and I'd like to pass it on.  My setup had a radiator on the = right side of the cowl.  The opening was just a few inches behind = the prop, and the exit was the traditional opening at the bottom.  = I could not get it to cool sufficiently at idle even on a 60 degree = day.  I finally figured out the problem when my manifold pressure = line melted on the top LEFT of the engine bay.

Air was being pushed in by the prop.  = As it left the radiator, it hit the firewall and turned left.  The = momentum carried it across the red hot muffler, straight past the exit = opening and back up the other side of the engine.  Basically, I had = turned my cowling into a convection oven.  The solution was a = simple baffle to scoop the air out the exit.  At 1500 RPM, the = temps would stabilize at 190 on a 90 degree day.  Idling faster or = slower would increase temps.

Moral of = the story, track the airflow all the way out of the plane.


=
On Tuesday, = January 20, 2015 6:04 PM, Stephen Izett <flyrotary@lancaironline.net> wrote:
=


Thanks Jeff and Neil
Steve = Izett
On 21 Jan 2015, at = 5:45 am, Jeff Whaley <flyrotary@lancaironline.net> = wrote:

Steve, my setup will cool on the = ground <80 F OAT provided that engine rpm is </=3D 3000 with zero = wind; it will do a bit better than that if airplane is taxiing or there = is a strong breeze.
Both my oil air intake and radiator air intake plenums are within a few inches of the prop.
If you open the throttle during = stationary ground operation you should expect it to overheat.  = Stationary engine dynamometers have HUGE radiators/coolers with ducted = fans.
Jeff
 
<= tr class=3D"yiv8274710807">
From:
Subject:
Re: [FlyRotary] = Cooling
Date:
Wed, 21 Jan 2015 07:39:29 = +1100
To:
Rotary motors in aircraft = <flyrotary@lancaironline.net>
<image001.gif>

<image002.gif>
Steve,  I can run full noise on the = ground with no heating problems, but then I do have 900 cub inches of = cooling.  600 for water and 300 for oil.  I did insist that = PWR make a rad that WILL cool.  It does regardless of OAT. I had to = put a thermostat in to get the water over 60 degrees.  I have too much cooling. =  Neil.

-----Original Message----- From: steve = Izett
Sent: Tuesday, January 20, 2015 6:35 = PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Cooling

Hi Guys

So what are your experiences of running on the = ground.
Do your setups cool on the ground at any = throttle setting?

I=E2=80=99m still not in a position to open the = throttle as Im in a garage at home.
After start and running at about 1500RPM = (engine) with an OAT 90+
temps slowly rise till i shut it down before it = gets past 210F.
This takes probably 20 Minutes.

What do you guys see on the ground in your = various climates and cooling setups?

Steve Izett
Perth Western Australia
 
This message, and the = documents attached hereto, is intended only for the addressee and may = contain privileged or confidential information. Any unauthorized = disclosure is strictly prohibited. If you have received this message in = error, please notify us immediately so that we may correct our internal = records. Please then delete the original message. Thank = you.



=
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