X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [129.116.87.143] (HELO MAIL01.austin.utexas.edu) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 991710 for flyrotary@lancaironline.net; Mon, 20 Feb 2006 10:59:43 -0500 Received-SPF: none receiver=logan.com; client-ip=129.116.87.143; envelope-from=mark.steitle@austin.utexas.edu X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C63636.8EDEFD9A" Subject: RE: [FlyRotary] Another rotary failure Date: Mon, 20 Feb 2006 09:58:57 -0600 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E03C3D5D3@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Another rotary failure Thread-Index: AcY1hJvfDfffbnCjQGKrmqTElVMJ9gAsWL0w From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C63636.8EDEFD9A Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Kelly, I've been working on finishing all the other stuff and haven't done any more ground runs lately. I'm still at about 10 hours on the Hobbs with no leaks. =20 =20 Mark =20 =20 ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer Sent: Sunday, February 19, 2006 12:44 PM To: Rotary motors in aircraft Subject: [FlyRotary] Another rotary failure =20 Chuck, So relieved that the failure was benign enough to allow you to pick where and how to land.........Like all of the "Rotorheads" I will be waiting to hear the cause of compression loss........Along the same line I and others will be=20 interested in how the "TES" O-rings in your rotor side oil seals were holding out.........You and Mark Steitle are the only ones currently using them in your engines rotors (that I am aware of) and Mark has only ground run time=20 on his 20B.........How many hours do you have on them now ? -- Kelly Troyer=20 Dyke Delta/13B/RD1C/EC2=20 ----- Original Message -----=20 From: Chuck Dunlap =20 To: Rotary motors in aircraft =20 Sent: Sunday, February 12, 2006 12:26 AM Subject: [FlyRotary] Another rotary failure =20 Sorry I didn't make to Bill Eslick's for the Rotorfest, I missed by about one hour. About 30 miles north of San Angelo TX the RPM suddenly dropped and I could not restore it with any of my emergency procedures. GPS told me nearest airport was Robert Lee about 15 miles away. I headed there and landed without incident. Turning the prop by hand shows almost zero compression in one rotor, indicating bad/broken apex seals, quite similar to my engine-out experience 2 1/2 years ago which caused a forced landing near the Grand Canyon. This time the vibration was not quite as bad, and the RPM dropped to around 4300 which was still not enough to maintain altitude. I called my friend with a Glasair and he cam got me and took me home. I will have to find some time to build another motor and drive 12 hours back there and swap motors. Or I might drive there, remove the wings and trailer it back, have not decided yet. My good friend/mentor/flight instructor is trying to talk me into going back to a Lycosaurus, and I have to think of some good reasons not to. Until I get the motor back and torn apart, I wont know what caused the failure, but I will post anything that I find. =20 Regards Chuck Dunlap RV-6 13B 535 hours ------_=_NextPart_001_01C63636.8EDEFD9A Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Kelly,

I’ve been working on = finishing all the other stuff and haven’t done any more ground runs = lately.  I’m still at about 10 hours on the Hobbs with no leaks. =  

 

Mark  =   

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
Sent: Sunday, February = 19, 2006 12:44 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] = Another rotary failure

 

Chuck,

    So relieved that the failure was benign = enough to allow you to pick where

and how to land.........Like all of the = "Rotorheads" I will be waiting to hear the

cause of compression loss........Along the same line I and = others will be

interested in how the "TES" O-rings in your = rotor side oil seals were holding

out.........You and Mark Steitle are the only ones currently = using them in

your engines rotors (that I am aware of) and Mark has = only ground run time

on his 20B.........How many hours do you have on them now = ?

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

----- Original Message ----- =

Sent: Sunday, = February 12, 2006 12:26 AM

Subject: = [FlyRotary] Another rotary failure

 

Sorry I didn't make to Bill Eslick's for the = Rotorfest, I missed by about one hour. About 30 miles north of San Angelo TX the RPM suddenly dropped and I could not restore it with any of my = emergency procedures. GPS told me nearest airport was Robert Lee about 15 miles = away. I headed there and landed without incident.

Turning the prop by hand shows almost zero = compression in one rotor, indicating bad/broken apex seals, quite similar to my = engine-out experience 2 1/2 years ago which caused a forced landing near the = Grand Canyon. This time the vibration was not = quite as bad, and the RPM dropped to around 4300 which was still not enough to = maintain altitude.  I called my friend with a Glasair and he cam got me and = took me home. I will have to find some time to build another motor and drive 12 = hours back there and swap motors. Or I might drive there, remove the wings and trailer it back, have not decided yet.

My good friend/mentor/flight instructor is trying to = talk me into going back to a Lycosaurus, and I have to think of some good = reasons not to. Until I get the motor back and torn apart, I wont know what = caused the failure, but I will post anything that I = find.

 

Regards

Chuck Dunlap

RV-6 13B 535 hours

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