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 4.3.4) with ESMTP id 1001455 for flyrotary@lancaironline.net; Tue, 14 Jun 2005 08:41:41 -0400 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 V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C570DE.505CBF04" Subject: RE: [FlyRotary] Re: Engine Not Starting Date: Tue, 14 Jun 2005 07:40:58 -0500 Message-ID: <87DBA06C9A5CB84B80439BA09D86E69E016C1A0A@MAIL01.austin.utexas.edu> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Engine Not Starting Thread-Index: AcVwf7U84sfdrW6iQ0aihS7JPsrXLAAXO79g From: "Mark R Steitle" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01C570DE.505CBF04 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable George,=20 That may have been me following Paul Conner's first engine-out landing. I picked up the idea from the Eggenfellner Subaru group. They had had a couple of instances where pilots ran one tank dry and then couldn't get the EFI pump to re-prime, and ended up in off-field landings. It is now a mandatory change for anyone running the Eggenfellner package. I used a small carburetor jet from my stash of 2-cycle motorcycle jets. It was about .020-025" and installed so as to bypass the pressure regulator, bleeding air back through the fuel return line. I have tested my setup and it allows enough pressure relief to permit the pump to re-prime if I run a tank dry. Before installing the bypass bleeder circuit, it would not re-prime unless I cracked open a line downstream of the pump. =20 =20 Mark S. ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer Sent: Monday, June 13, 2005 8:23 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Engine Not Starting =20 Georges & George, I used a .020 thousands (.508 mm) ! -- Kelly Troyer=20 Dyke Delta/13B/RD1C/EC2=20 =20 -------------- Original message from "George Lendich" : --------------=20 =09 =09 =09 =20 Georges, Very small is my guess, someone on here gave that suggestion some time ago and I can't remember the size they suggested. It's just to relieve the pressure after shut down. The loss during running is so small as not to matter. I thought it was a great idea ! George ( down under) =20 What maximum size orifice would you use in the bypass hose? Georges B. =20 -------Original Message------- =20 From: Rotary motors in aircraft =20 Date: 06/13/05 15:50:42 To: Rotary motors in aircraft =20 Subject: [FlyRotary] Re: Engine Not Starting =20 > 3. Always stop the engine by turning off the fuel pump, so that > there is no fuel pressure in the line. Otherwise, unburned fuel may > leak from the still pressurized injectors into the rotors and increase > the chances of hard starting or flooding the next time you try to start > the engine. =20 Bob, The suggested low volume by-pass hose ( by passing the fuel pressure regulator) will also solve that problem. George ( down under) =20 =20 =20 =20 . =20 =20 =20 =20 ------_=_NextPart_001_01C570DE.505CBF04 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

George, =

That may have been me following = Paul Conner’s first engine-out landing.  I picked up the idea from = the Eggenfellner Subaru group.  They had had a couple of instances = where pilots ran one tank dry and then couldn’t get the EFI pump to re-prime, = and ended up in off-field landings.  It is now a mandatory change for = anyone running the Eggenfellner package.  I used a small carburetor jet = from my stash of 2-cycle motorcycle jets.  It was about .020-025” and = installed so as to bypass the pressure regulator, bleeding air back through the fuel = return line.  I have tested my setup and it allows enough pressure relief = to permit the pump to re-prime if I run a tank dry.  Before installing = the bypass bleeder circuit, it would not re-prime unless I cracked open a = line downstream of the pump. 

 

Mark = S.

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
Sent: Monday, June 13, = 2005 8:23 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Engine Not Starting

 

Georges & George,

     I used a .020 thousands (.508 mm) = !

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


 

-------------- Original message from "George Lendich" <lendich@optusnet.com.au>: --------------


 

Georges,

Very small is my guess, someone on here gave that = suggestion some time ago and I can't remember the size they suggested. It's just to relieve the pressure after shut down. The loss during running is so = small as not to matter.

I thought it was a great idea = !

George ( down under)

 

 What maximum size orifice would you use in = the bypass hose?

Georges B.

 

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

 

Date:= 06/13/05 15:50:42

Subject: [FlyRotary] Re: Engine Not Starting

 

> 3. Always stop the engine by turning off the = fuel pump, so that

> there is no fuel pressure in the line.  Otherwise, unburned fuel = may

> leak from the still pressurized injectors into = the rotors and increase

> the chances of hard starting or flooding the = next time you try to start

> the engine.

 

Bob,

The suggested low volume by-pass hose ( by passing = the fuel pressure

regulator) will also solve that = problem.

George ( down under)

 

 

 

.

 

 

 

 

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