X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao10.cox.net ([68.230.241.29] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1069852 for flyrotary@lancaironline.net; Sun, 16 Apr 2006 01:18:47 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.29; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao10.cox.net (InterMail vM.6.01.06.01 201-2131-130-101-20060113) with ESMTP id <20060416051759.YPBC17757.fed1rmmtao10.cox.net@BigAl> for ; Sun, 16 Apr 2006 01:17:59 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Typical EGT Date: Sat, 15 Apr 2006 22:18:17 -0700 Message-ID: <000001c66115$2b566e90$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Based on my dyno results, for NA I'd expect the highest to be about = 1650F WOT, 6000 rpm at max power mixture. At 5000 maybe 1550 - 1600. At 1700 = I'd consider measures to reduce it. =20 FWIW, Al -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of John Slade Sent: Saturday, April 15, 2006 4:33 PM To: Rotary motors in aircraft Subject: [FlyRotary] Typical EGT Rotarians, When I installed my T04 turbo I must have damaged the EGT probe. I was=20 seeing 500F on take-off. Today I installed a new probe and it looks like = the new turbo runs a lot hotter than the old one. While installing the=20 new probe I noticed that the ceramic coating on the turbo had turned to=20 dust. On take-off today I saw 1730 and the EGT alarm went off. I backed off=20 the throttle and flew with it down around 1600, but that only gets me=20 around 4500 rpm and zero boost. Bring it up to 5000 rpm and I see 1650.=20 This is with the mixture a little higher than mid scale. Richen the=20 mixture a tad and I can reduce EGT by 30 F or so. If I bring the rpm up=20 to 5300 the EGT is up to 1700 pretty quickly. Oil and coolant temps are=20 fine at around 180 - 190. I put 3.3 hours on the plane today with no=20 other issues, but at 4500 rpm I don't get there very fast. :( What do other rotary flyers consider max EGT, and what could be causing=20 it to be so high (if this is really high)? John N96PM 60.5 Hrs. -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/