X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost02.isp.att.net ([204.127.217.102] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4224786 for flyrotary@lancaironline.net; Sat, 17 Apr 2010 13:21:48 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.102; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-85-140-14.mco.bellsouth.net[98.85.140.14]) by isp.att.net (frfwmhc02) with SMTP id <20100417172110H0200nmeade>; Sat, 17 Apr 2010 17:21:10 +0000 X-Originating-IP: [98.85.140.14] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] cooling for ground runs Date: Sat, 17 Apr 2010 13:21:10 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01CADE30.D9270510" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcreT+1jtUj+Qf6ORZKDhj3K0ns6lQAAcAAA X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01CADE30.D9270510 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit What is getting hot? Water or oil? Both? It looks like you might have problems with the oil due to the restricted outlet for the air. It is smaller than the inlet and should be larger than the inlet. If you use a spray bar, it should be a fine spray. Almost atomized for best results. That means high pressure and fine nozzle. Can you taxi during these tests? That will assist in air flow if you can. Don't get too far away incase you have to shut down and push.. :-) Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris and Terria Sent: Saturday, April 17, 2010 1:03 PM To: Rotary motors in aircraft Subject: [FlyRotary] cooling for ground runs Gents, I am doing the higher power ground runs now, and am only able to run for about 5 minutes before reaching 195* or so. I'm looking for ideas on how to extend the time for each ground run. I was thinking of adding a spray bar like others have discussed. My thought was to drill some holes in some PVC and connect it to the garden hose. Then put it in the intake in front of the radiator. I would have to run the hose out the front and clamp it down so it doesn't come close to the prop. I'm open to all ideas though. I've attached a picture that shows my radiator and duct work. Thanks, Chris ------=_NextPart_000_0006_01CADE30.D9270510 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

What is getting hot?  Water or oil?  Both?  It looks like you might have problems with the = oil due to the restricted outlet for the air.  It is smaller than the inlet = and should be larger than the inlet.  If you use a spray bar, it should = be a fine spray.  Almost atomized for best results.  That means = high pressure and fine nozzle.

Can you taxi during these = tests?  That will assist in air flow if you can.  Don’t get too far away = incase you have to shut down and push..  J

 

Bill B

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris and Terria
Sent: Saturday, April 17, = 2010 1:03 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] = cooling for ground runs

 

Gents,

 

I am doing the higher power ground runs now, and am only able to run for = about 5 minutes before reaching 195* or so.  I’m looking for ideas on = how to extend the time for each ground run.  I was thinking of adding a = spray bar like others have discussed.  My thought was to drill some holes in = some PVC and connect it to the garden hose.  Then put it in the intake = in front of the radiator.  I would have to run the hose out the front and = clamp it down so it doesn’t come close to the = prop.

 

I’m open to all ideas though.

 

I’ve attached a picture that shows my radiator and duct = work.

 

Thanks,

 

Chris

------=_NextPart_000_0006_01CADE30.D9270510--