----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Alan, for what it is worth. I would be inclined to ascertain if there is a performance issue first. The easiest way for me to do this is check the color of the exhaust, I do this after every landing regardless. On take off and landing I rely on the airspeed indicator, however in flight I monitor both it and my Pilot III . I have no doubt that using the GPS as an airspeed indicator is a violation of some FAR so I cannot say that I use it in flight, however I believe it to be very accurate, and my post cross country calcs have backed up the GPS every time. I am in no way condoning breaking the law for the sake of accuracy in flight, but for peace of mind I pay close attention to the GPS. -----Original Message----- From: Alan Lail [mailto:[EMAIL PROTECTED] Sent: Friday, December 21, 2001 7:24 AM To: [EMAIL PROTECTED] Subject: RE: [COUPERS] slow speeds --- ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- Rick Green wrote: > > I've finally got a ferry pilot who is moving my 415D from So California > to Michigan. He made it from Big Bear to 50 miles east of Albuquerque. > > He indicates that he is only getting 80 knots for performance. That's > without a headwind. The plane has a 85 hp with a 7148 climb prop which > > was new in 95. He states that the engine is running strong, but does > not turn over 2300 RPM. He believes that the prop may have been > overpitched. > any other ideas? > > There is a 48 hour window of good weather, but at this speed it doesnt > look like he'll make it. > > Rick Green > N93686 415 C > South Haven MI > > > Howdy Rick, What's the time on the engine? What are the compressions like? I had a C-85-12 on mine for about 10 hours and could barely make 2250 Static, in the air it was about the same performance as you. My engine had over 2000 hours on it with the same prop. I ended up rebuilding my engine and now my performance is way up. My static is about 2300, but I get better then 2575 in full out run with the same prop. I pull back to 2400 and cruise at 112. Now just to get the weather to pull together for a few more break-in runs. Get the engine checked out. Be safe and don't become a statistic for the Truth teller to have more information to shoot back. Alan Ain't We having Fun! You'all Vancouver, WA N3408H, 415D ==^================================================================ This email was sent to: [EMAIL PROTECTED] EASY UNSUBSCRIBE click here: http://topica.com/u/?aVxiLm.aVzvvT Or send an email to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
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