Return-Path: Received: from imf16aec.mail.bellsouth.net ([205.152.59.64] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 564660 for flyrotary@lancaironline.net; Sun, 12 Dec 2004 18:05:48 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.64; envelope-from=sqpilot@bellsouth.net Received: from paul52u7f5qyav ([216.78.114.111]) by imf16aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with SMTP id <20041212230532.HWGE1980.imf16aec.mail.bellsouth.net@paul52u7f5qyav> for ; Sun, 12 Dec 2004 18:05:32 -0500 Message-ID: <006d01c4e09f$126e7ff0$6f724ed8@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Paul's first flight Date: Sun, 12 Dec 2004 17:05:23 -0600 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Thank you, Dave....I will work on getting the static RPM's up before I fly her again. Thanks for providing your rpm numbers....gives me something to shoot for. sincerely, Paul Conner ----- Original Message ----- From: "DaveLeonard" To: "Rotary motors in aircraft" Sent: Sunday, December 12, 2004 2:33 PM Subject: [FlyRotary] Re: Paul's first flight > Congratulations Paul! I have added you to the list of flying rotary > powered > aircraft on the Rotary Roster. An honor held by only 45 individuals. (I > still need to add Mistral - and I am sure I am missing others). > > I'm sure you will fix the power issue. I am able to run up my RV-6 to at > least 5500 RPM at 35"MAP by just holding the brakes, so I imagine you have > a > ways to go, especially if you use some chocks too. > > David Leonard > The Rotary Roster > http://members.aol.com\_ht_a\rotaryroster\index.html > > > >> >> >> Paul, >> Congratulations on the first flight. Sounds like it >> was pretty uneventful other thean the power issue. >> >> I had a similar issue in the beginning, but it was >> only a tuning issue, so maybe that is all yours is as >> well. >> >> If you have an A/F ratio gauge, it would help identify >> the problem, but as a guess, I'd say probably too lean >> >> Steve brooks >> >> >> > You're correct, Rusty....the winds were a direct >> > crosswind 20 knots, gusting higher (windsock >> > standing straight out). At approximately 3:30 P.M. >> > my SQ2000 slipped the surly bounds of Earth....made >> > a couple circuits around the airport and had an >> > uneventful (yawn) landing. The precarious part was >> > the take-off and climbout. I am not getting enough >> > power. From 1/4 to 1/2 throttle, engine accelerates >> > smoothly and plenty of power. As soon as I try to go >> > above 1/2 throttle, the engine begins to bog down. >> > Advancing the throttle more only made it bog down >> > even more. On takeoff roll, I was only able to get >> > 4400 rpm's at approximately 1/2 throttle. >> > Acceleration felt OK, and the nosewheel lifted at >> > around 70 knots. Mains lifted off shortly afterward, >> > but it just didn't want to climb. (Flew fine in >> > ground effect, of course). Unfortunately, I had >> > reached the point of no return (short runway) and >> > past the accelerate/stop point, so I was committed. >> > Found a "V" in the treeline and headed for that. >> > Made it...(whew)....continued slow climb to 2000 >> > feet, made a couple of circuits around the airport >> > and had a smooth landing (considering the strong, >> > gusty crosswinds). Down and stopped by mid field. >> > I had a few "bugs" to work out, like >> > tightening the tension on the nosewheel, so after 3 >> > trips to the runway and back to the hangar, by the >> > time I got to the runway the fourth time, water >> > temperatures were up to 190 degrees. Fortunately, >> > on climbout they started dropping, and by the time I >> > was downwind, they were stable at 170. I am pleased >> > that the temperature decreased in the climb. >> > I have to work on the power problem ASAP. >> > I'm thinking it is mixture related. I had programed >> > the MicroTech ECU to be 10 percent leaner (for all >> > throttle settings), and perhaps that was a mistake. >> > If I remember correctly, you need sufficient air and >> > sufficient fuel to make power. Because the >> > butterfly in the throttlebody continues opening past >> > 1/2 throttle, I'm reaonably certain that I am >> > getting more air past 1/2 throttle. I am assuming >> > that I am not getting more fuel coming in past that >> > 1/2 throttle position, causing the engine to bog >> > down past 1/2 throttle. Best RPM I could obtain was >> > 4400 rpm (in cruise with the prop unloaded), and >> > with a 2.19:1 gear reduction,that puts my max rpm on >> > the prop at only 2000. Barely enough to fly, let >> > alone climb out. Will continue problem solving and >> > pass on results. On the positive side, first flight >> > was successful, aircraft flew well, and no-one got >> > hurt. I have to count that as a success. Take >> > care. Paul Conner, Mobile, AL >> >> >> >> Homepage: http://www.flyrotary.com/ >> >> Archive: http://lancaironline.net/lists/flyrotary/List.html > > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html >