Return-Path: Received: from [129.116.87.170] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 819285 for flyrotary@lancaironline.net; Thu, 24 Mar 2005 16:45:30 -0500 Received-SPF: none receiver=logan.com; client-ip=129.116.87.170; envelope-from=mark.steitle@austin.utexas.edu X-MIMEOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C530BA.B101334B" Subject: RE: [FlyRotary] Bad Day Good Day Non-Rotary Date: Thu, 24 Mar 2005 15:44:44 -0600 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69EC080F9@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Bad Day Good Day Non-Rotary Thread-Index: AcUwtmXj/k+qE5CVTqSpX+UsaZNfPwABA0fQ From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C530BA.B101334B Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Ed, Sounds to me like they need to find themselves a good mechanic... or maybe they just did? =20 =20 Mark S. =20 Well, I know nothing about rotax engines but that sounded like fuel starvation at higher power settings. I asked what type fuel pump they had and it turns out it is a diaphragm type driven by pulsation's from the engine via a tube. Sure enough as I looked it over, I found that the tube from the engine to the pump that provided the suction pulses to work the diaphragm was crimped almost shut near the pump where it was difficult to see. Clearly not a good condition, I point this out to them and they rapidly put on a new tube. =20 Fired it up and got almost 6000 rpm on the ground. Took off and look like he was going straight up - a marked difference in performance. Don't know if this condition would have resulted in an accident - but clearly not a good situation. Ed =20 Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ------_=_NextPart_001_01C530BA.B101334B Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Ed,

Sounds to me like they need to find themselves a good mechanic… or maybe they just did? =

Mark = S.

Well, I know nothing about rotax engines but that = sounded like fuel starvation at higher power settings. I asked what type = fuel pump they had and it turns out it is a diaphragm type driven by pulsation's from the engine via a tube. Sure enough as I looked it = over, I found that the tube from the engine to the pump that provided the = suction pulses to work the diaphragm was crimped almost shut near the pump where = it was difficult to see. Clearly not a good condition, I point this out = to them and they rapidly put on a new tube.

Fired it up and got almost 6000 rpm on the = ground. Took off and look like he was going straight up - a marked difference in performance. Don't know if this condition would have resulted in = an accident - but clearly not a good = situation.

Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com

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