X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from S2.cableone.net ([24.116.0.228] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 910893 for flyrotary@lancaironline.net; Thu, 21 Apr 2005 22:34:16 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.116.0.228; envelope-from=crayd@cableone.net Received: from chuckathlon (unverified [69.92.218.9]) by S2.cableone.net (CableOne SMTP Service S2) with ESMTP id 17289380 for ; Thu, 21 Apr 2005 19:57:56 -0700 Return-Path: From: "Chuck Dunlap" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Bernie building time 1.8 hours today Date: Thu, 21 Apr 2005 19:33:45 -0700 Message-ID: <000001c546e3$b55f0130$e401a8c0@chuckathlon> 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 10.0.3416 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2739.300 X-IP-stats: Incoming Last 2, First 12, in=3, out=0, spam=0 X-External-IP: 69.92.218.9 X-Abuse-Info: Send abuse complaints to abuse@cableone.net Hi Bernie What is happening is that the ECU is switching between running only the primary injectors below 16"MP and both sets of injectors above 16". Any difference in the flow rates of the injectors can cause a lean condition which usually can be covered up by running up the mixture a little when operating in this area. Perhaps your injectors are not well matched? I had this happen whenever I throttled back to descend when I had Tracy's EC version 1. I have since changed to version 2 and have not had the problem, with the version 2 you can program the switchover point lower, try about 13". The version 1 was fixed at 16" Yep I agree, flying up high feels like its in its own element, like it will run forever its so smooth... Chuck Dunlap -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of jbker@juno.com Sent: Thursday, April 21, 2005 5:20 PM To: Rotary motors in aircraft Subject: [FlyRotary] Bernie building time 1.8 hours today Tried to complete Van's AD for tipup 7's and 9's this AM, got frustrated and went to fly after lunch. South Westbound holding my 50 mile radius for River Ranch( my home field per the limitation) and 10.5k. Followed the circle on around to Lakeland, then climbed to 11.5 eastbound just north of R2901 then south between the build up that looked like they went above 15k. When I ducked down between the clouds to get under, actually got into a light shower (no harm to Ed's prop :>)). Seems like the combination 9 and rotary just like it better the higher I go. Will have to borrow and O2 bottle one of these days. The only thing that made me uncomfortable today was that when I throttle back to stay out of the red arc on the A/S to about 15 manifold pressue, the engine goes into the unstable up and down hunting that no mixture ratio seems to fix. Any ideas?? Bernie, 13+ hours now. >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html