X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao06.cox.net ([68.230.241.33] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 943868 for flyrotary@lancaironline.net; Sat, 14 May 2005 14:06:32 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.33; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao06.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050514180547.ORQF19494.fed1rmmtao06.cox.net@BigAl> for ; Sat, 14 May 2005 14:05:47 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Killing engine in flight for glide test?? Date: Sat, 14 May 2005 11:05:51 -0700 Message-ID: <000001c558af$90a0b720$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 As stated earlier, have turned pump off momentarily and back on, the engine restarted immediately. For longer duration engine off glide testing, should both the injectors also be turned off? My concern is = that without fuel in the rail, engine windmilling , the control will probably continue firing the plugs and injectors. What should be disabled beyond turning fuel off ??=20 ---------- I think I'd choose to turn off the injectors, and leave the pump on, or = turn it on at intervals. Leaving the pump off for an extended period could = allow the pressure to bleed off, and with no flow in the hot environment, = could result in vapor forming in the line or fuel rail. This should clear = fairly quickly when the pump is turned back on; but even short delay could = cause an adrenalin injection and rapid heart rate. Al=20