X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [67.8.182.29] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 5.0.9) with HTTP id 1141910 for lml@lancaironline.net; Mon, 05 Jun 2006 17:54:20 -0400 From: "Marvin Kaye" Subject: Re: [LML] Re: David Hickman Crash To: lml X-Mailer: CommuniGate Pro WebUser v5.0.9 Date: Mon, 05 Jun 2006 17:54:20 -0400 Message-ID: In-Reply-To: <005001c688c4$2ff17a40$1102a8c0@YOUR85A8F7B8EC> References: <005001c688c4$2ff17a40$1102a8c0@YOUR85A8F7B8EC> X-Priority: 3 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "cblitzer" : I can echo Jack's statements not because my knowledge or experience comes anywhere close to his, but what I do know is that Jack checked me out in my IV-P. We first did some stalls and noticed a wing drop. Landed, put stall strips on and now my airplane stalls like a 152. Plenty of buffet, stalls straight ahead. On another note, during flight testing, the original DAR had my builder change the governor setting because the prop was not producing enough RPM. Turned out the governor was fine but the prop came out of MT from overhaul NOT set at 2700 RPM. So we adjusted the prop, but neglected to re-adjust the governor that should NEVER have been touched in the first place. Jack took off, and about 200 feet, the engine sputtered, black smoke etc. Jack recovered by REDUCING power, and thankfully landed without further incident. Why the power loss and balk smoke - as previously stated, watch your fuel/air ratio. Turned out that when we increased the prop RPM without adjusting the governor, the prop exceeded 2700 RPM by a lot. This in turn made the mixture so rich the engine would not power up. Result - power loss, black smoke, AND recovery by reducing power, Lessened the fuel. Lessons learned - 1 - always have a great test pilot/instructor, (thanks Jack) 2 - NEVER EVER touch the governor when you are looking at McCauley calibration sheet that says 2704 RPM on the bench no matter who tells you to (even a DAR) 3 - Check you fuel/air ratio on the ground. full power, we strapped the horizontal to a truck. 4 - don't be afraid to install stall strips. 5 - Always have great instructor/test pilot Craig Blitzer L-IV-P 798CB 95 hours, ready for paint