Return-Path: Received: from smtp105.mail.sc5.yahoo.com ([66.163.169.225] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with SMTP id 555927 for flyrotary@lancaironline.net; Sat, 04 Dec 2004 12:59:52 -0500 Received-SPF: none receiver=logan.com; client-ip=66.163.169.225; envelope-from=prvt_pilot@yahoo.com Received: from unknown (HELO stevehome) (prvt?pilot@24.136.229.34 with login) by smtp105.mail.sc5.yahoo.com with SMTP; 4 Dec 2004 17:59:21 -0000 Reply-To: From: "Steve Brooks" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: power sag Date: Sat, 4 Dec 2004 12:59:09 -0500 Message-ID: <000f01c4da2a$f5182b60$6b01a8c0@workgroup.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01C4DA01.0C46B740" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.6604 (9.0.2911.0) X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C4DA01.0C46B740 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit MessageRusty, Now that you mention it, I do recall reading about that. I think that I will take your advise of running it a little richer is cool weather. Steve Brooks -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent: Saturday, December 04, 2004 11:48 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: power sag On Saturday, I went to fly, and had some trouble getting it to stay running due to the cold temperatures. I probably didn't keep it rich enough, long enough. I taxied out to the far end of the runway (5000'), and took the runway for take off. As I accelerated to about 90 kts, I was just rotating when to power dropped substantially. I cut the throttle, and aborted the takeoff. Hi Steve, I recently reported something similar, which I also have no explanation. I took off on the coldest day I've flown (58), and at about 800 ft, my engine sagged significantly. I instinctively turned to re-enter the pattern, and also richened the mixture some, which seems to have restored normal rpm. I had the mixture knob at it's normal takeoff position, but wondered if the cold weather required more fuel than the EC-2 added on it's own. For the record, I don't absolutely know that richening the mixture corrected it. It could have just corrected itself and the mixture change was a coincidence. I set the mixture just a bit richer now :-) Rusty ------=_NextPart_000_0010_01C4DA01.0C46B740 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Rusty,
Now=20 that you mention it, I do recall reading about that.  I think that = I will=20 take your advise of running it a little richer is cool=20 weather.
 
Steve=20 Brooks
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Russell=20 Duffy
Sent: Saturday, December 04, 2004 11:48 = AM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] Re: power=20 sag

On Saturday, I went to fly, and had some trouble = getting it to=20 stay running due to the cold temperatures.  I probably didn't = keep it=20 rich enough, long enough.  I taxied out to the far end of the = runway=20 (5000'), and took the runway for take off.

As I accelerated to = about 90=20 kts, I was just rotating when to power dropped substantially.  I = cut the=20 throttle, and aborted the takeoff.

 
Hi=20 Steve,
 
I = recently reported=20 something similar, which I also have no explanation.  I took off = on the=20 coldest day I've flown (58), and at about 800 ft, my engine sagged=20 significantly.  I instinctively turned to re-enter the pattern, = and also=20 richened the mixture some, which seems to have restored normal = rpm.  I=20 had the mixture knob at it's normal takeoff position, but wondered if = the cold=20 weather required more fuel than the EC-2 added on it's own.  For = the=20 record, I don't absolutely know that richening the mixture corrected = it. =20 It could have just corrected itself and the mixture change was a=20 coincidence.  I set the mixture just a bit richer now=20 :-)
 
Rusty
 




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