X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost03.isp.att.net ([207.115.11.53] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4233217 for flyrotary@lancaironline.net; Sat, 24 Apr 2010 22:30:55 -0400 Received-SPF: none receiver=logan.com; client-ip=207.115.11.53; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-85-113-131.mco.bellsouth.net[98.85.113.131]) by isp.att.net (frfwmhc03) with SMTP id <20100425023018H030017rjpe>; Sun, 25 Apr 2010 02:30:18 +0000 X-Originating-IP: [98.85.113.131] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: cooling for ground runs Date: Sat, 24 Apr 2010 22:30:20 -0400 Message-ID: <9BBED77B578F4B388CA2E150CCC8A413@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01CAE3FD.B9A5EAD0" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcrkHC7eClzTWbFqQD6d6mqWAdH9jAAAfmoQ X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01CAE3FD.B9A5EAD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Chris, My experience has been that mine cools much better with the cowl off. = Of course, when I ran that way it was much cooler, about 60 degrees. At = that temp, with the cowl off, I had trouble getting the oil up to operating = temp. Today, with the cowl on and temp in the 80s, my water temp climbed to = about 220 and the oil to 185 after about 30 min. I need to do some air = pressure testing to see what I need to do to get more air to go thru the = radiator. I have already diverted some air from the oil cooler to the radiator, so I need to see what the pressures are in front and behind the two coolers. = =20 Bill B =20 _____ =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris and Terria Sent: Saturday, April 24, 2010 10:08 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: cooling for ground runs =20 Right now, it is off. Today was the first really high power run, and I = want to do a couple with the cowl off first. I can feed the hose in through = the hole between the cowl and firewall, so I can still get the cooling with = the cowl on. =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bill Bradburry Sent: Saturday, April 24, 2010 7:55 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: cooling for ground runs =20 Chris, Are you doing your ground running with the cowl on or off? =20 Bill B =20 _____ =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris and Terria Sent: Saturday, April 24, 2010 4:06 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: cooling for ground runs =20 Here is how I solved the high temperatures during ground runs. I bought = $10 worth of stuff at Lowes, =BD inch PVC, 90 and 45 angles, end caps, and = misters for spraying plants in the garden (two in the oil cooler, three for the water cooler). I hooked it up to the hose, and although water flowed = all over the ground, the engine remained within limits. =20 Before, I could get about 4-5 minutes of high power. With this spray = bar running, I had to push the power up above 2500 RPM to get it to heat up above 135*, then after about 8 minutes at high power, I was still only = 185*. =20 Easy, cheap, and it keeps the cooling system intact. =20 CHris ------=_NextPart_000_0006_01CAE3FD.B9A5EAD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Chris,

My experience has been that mine = cools much better with the cowl off.=A0 Of course, when I ran that way it was = much cooler, about 60 degrees.=A0 At that temp, with the cowl off, I had = trouble getting the oil up to operating temp.=A0 Today, with the cowl on and = temp in the 80s, my water temp climbed to about 220 and the oil to 185 after about = 30 min.=A0 I need to do some air pressure testing to see what I need to do to get = more air to go thru the radiator.=A0 I have already diverted some air from the = oil cooler to the radiator, so I need to see what the pressures are in front and = behind the two coolers. =A0

 

Bill B

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris and Terria
Sent: Saturday, April 24, = 2010 10:08 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = cooling for ground runs

 

Right now, = it is off.  Today was the first really high power run, and I want to do a = couple with the cowl off first.  I can feed the hose in through the hole = between the cowl and firewall, so I can still get the cooling with the cowl = on.

 <= /o:p>

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bill Bradburry
Sent: Saturday, April 24, = 2010 7:55 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = cooling for ground runs

 

Chris,

Are you doing your ground running = with the cowl on or off?

 

Bill B

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris and Terria
Sent: Saturday, April 24, = 2010 4:06 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = cooling for ground runs

 

Here is how = I solved the high temperatures during ground runs.  I bought $10 worth of = stuff at Lowes, =BD inch PVC, 90 and 45 angles, end caps, and misters for = spraying plants in the garden (two in the oil cooler, three for the water cooler).  = I hooked it up to the hose, and although water flowed all over the ground, = the engine remained within limits.

 <= /o:p>

Before, I = could get about 4-5 minutes of high power.  With this spray bar running, I = had to push the power up above 2500 RPM to get it to heat up above 135*, then = after about 8 minutes at high power, I was still only = 185*.

 <= /o:p>

Easy, = cheap, and it keeps the cooling system intact.

 <= /o:p>

CHris

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