X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.148.248.31] (HELO txamrnwh003.ent.textron.com) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1546815 for flyrotary@lancaironline.net; Thu, 09 Nov 2006 00:46:21 -0500 Received-SPF: none receiver=logan.com; client-ip=216.148.248.31; envelope-from=JHutchison2@bellhelicopter.textron.com Received: by bhdfwex110.bh.textron.com with Internet Mail Service (5.5.2658.27) id ; Wed, 8 Nov 2006 23:45:38 -0600 Message-ID: <3CAB2FE6D4255949A25157F5D666E623047DCA70@bhdfwex103.bh.textron.com> From: "Hutchison, Jason" To: 'Rotary motors in aircraft' Subject: Latest cooling mods. Date: Wed, 8 Nov 2006 23:45:38 -0600 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2658.27) Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C703C2.48AA1B22" This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C703C2.48AA1B22 Content-Type: text/plain As some of you may know I added an evaporator core to my cooling system a month ago. Full throttle climbs resulted in cooling temps peaking around 170 degrees. The problem was in cruise flight the water temp would drop to 140-145 degrees. This was running at 6000 to 6500 rpm. Yesterday I installed a heater control valve to the evaporator core. Test flight results are as follows. OAT was 27C. Full throttle climb to 3000 feet water temp was 170 degrees. Level at 6300 rpm 165 mph indicated water temp stabilized at 172. Closing the valve water temp was slowly rose to 200 degrees opened the valve and within 1-2 minutes water temp was back down to 175. At about half open the water temp stabilized at 185. I will try to post some pics soon. Jason Hutchison (On to speed mods!!!!) ------_=_NextPart_001_01C703C2.48AA1B22 Content-Type: text/html Content-Transfer-Encoding: quoted-printable

As some of you may know I added an evaporator core = to my cooling system a month ago. Full throttle climbs resulted in cooling = temps peaking around 170 degrees. The problem was in cruise flight the water = temp would drop to 140-145 degrees. This was running at 6000 to 6500 rpm. = Yesterday I installed a heater control valve to the evaporator core. Test flight = results are as follows. OAT was 27C. Full throttle climb to 3000 feet water = temp was 170 degrees. Level at 6300 rpm 165 mph indicated water temp stabilized = at 172. Closing the valve water temp was slowly rose to 200 degrees opened the = valve and within 1-2 minutes water temp was back down to 175. At about half = open the water temp stabilized at 185. I will try to post some pics = soon.

Jason Hutchison

(On to speed mods!!!!)

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