X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.211.128.10] (HELO mail-in02.adhost.com) by logan.com (CommuniGate Pro SMTP 5.0) with ESMTP id 813097 for flyrotary@lancaironline.net; Thu, 03 Nov 2005 01:49:01 -0500 Received-SPF: none receiver=logan.com; client-ip=216.211.128.10; envelope-from=JoeH@PilgrimTech.com Received: from pilgrim9 (c-67-183-14-36.hsd1.wa.comcast.net [67.183.14.36]) by mail-in02.adhost.com (Postfix) with ESMTP id 08ED22C306C for ; Wed, 2 Nov 2005 22:48:10 -0800 (PST) (envelope-from JoeH@PilgrimTech.com) Reply-To: From: "Joe Hull" To: "'Rotary motors in aircraft'" Subject: Another Run - with Questions Date: Wed, 2 Nov 2005 22:47:58 -0800 Organization: Pilgrim Technologies Message-ID: <003901c5e042$87aca870$8802a8c0@redmond.corp.microsoft.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003A_01C5DFFF.79896870" X-Mailer: Microsoft Office Outlook 11 thread-index: AcXgQob+MFipIo/FQYahiIzHEmZWOQ== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_003A_01C5DFFF.79896870 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I ran the engine for an hour straight tonight. It seemed to run well but I do have a couple of questions that maybe this esteemed group can comment on. 1. Engine starts out at about 1300RPM at idle when cold and Oil PSI briefly is 81PSI and then drops to 65 or so after 15-20 seconds. Then as things warm up the RPM's increase and oil pressure drops. RPM levels out at about 1550 and oil pressure hovers around 30PSI. Is 30PSI an OK oil pressure level at that RPM? I did increase the RPM briefly toward the end of the hour and oil pressure did go up. At 1900-2000 RPM oil pressure was around 50PSI. 2. At the 1550 RPM the MicroTech says manifold pressure is 9-10Hg (18-20PSI). Does that sound reasonable? 3. EGT's are 2000-2050F. Seems a tad high to me!! My EGT probes are located about 2.5" from the rotor housing. When I shut it down my exhaust manifold/muffler was a very nice glowing red. It's made out of Inconel and is .06 thick so it seems to hold up pretty well. But if it's like this at 1600RPM what's it going to be at 5800RPM?? Cooling seems to be OK at the moment. When ever it gets to 212F I've got the MicroTech setup to turn on my radiator fan and it immediately heads down and goes to 180F in 1-2 minutes. Oil temps never got above 150F. But we are in Washington and the air temp was between 45F and 50F so I'm sure that helped. Thanx (rethinking fuel return and heater hoses) Joe Hull Redmond (Seattle), Washington Cozy MkIV #991 (working on Engine & Electrical & Finishing) http://www.maddyhome.com/canardpages/pages/JoeHull/index.html ------=_NextPart_000_003A_01C5DFFF.79896870 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I ran the engine for an hour straight tonight. It = seemed to run well but I do have a couple of questions that maybe this esteemed = group can comment on.

 

  1. Engine starts out at about 1300RPM at idle when cold and Oil PSI briefly = is 81PSI and then drops to 65 or so after 15-20 seconds. Then as things warm = up the RPM’s increase and oil pressure drops.  RPM levels out = at about 1550 and oil pressure hovers around 30PSI.  Is 30PSI an OK oil = pressure level at that RPM?  I did = increase the RPM briefly toward the end of the hour and oil pressure did go = up. At 1900-2000 RPM oil pressure was around = 50PSI.
  2. At the 1550 RPM the MicroTech says manifold = pressure is 9-10Hg (18-20PSI).  = Does that sound reasonable?
  3. EGT’s = are 2000-2050F.  Seems a tad high to = me!!  My EGT probes are located = about 2.5” from the rotor housing.  = When I shut it down my exhaust manifold/muffler was a very nice glowing = red.  It’s made out of = Inconel and is .06 thick so it seems to hold = up pretty well.  But if = it’s like this at 1600RPM what’s it going to be at = 5800RPM??

 

Cooling seems to be OK at the moment.  When ever it gets to 212F = I’ve got the MicroTech setup to turn on my radiator = fan and it immediately heads down and goes to 180F in 1-2 minutes.  Oil temps never got above = 150F.  But we are in Washington and = the air temp was between 45F and 50F so I’m sure that = helped.

 

Thanx (rethinking fuel return and heater hoses)

Joe Hull

Redmond (Seattle), = Washington

Cozy MkIV #991 (working on Engine = & Electrical & Finishing)

http://www.maddyhome.com/canardpages/pages/JoeHull/index.html

 

------=_NextPart_000_003A_01C5DFFF.79896870--