X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 09 May 2007 15:55:56 -0400 Message-ID: X-Original-Return-Path: Received: from mail3.dotsterhost.com ([72.5.54.189] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with SMTP id 2034584 for lml@lancaironline.net; Wed, 09 May 2007 15:00:07 -0400 Received-SPF: pass receiver=logan.com; client-ip=72.5.54.189; envelope-from=jtrepicone@trepicone.com Received: (qmail 15374 invoked from network); 9 May 2007 18:57:55 -0000 Received: from unknown (HELO jenny) (jtrepicone@trepicone.com@[65.24.51.114]) by 72.5.54.189 with SMTP; 9 May 2007 18:57:54 -0000 From: "Joe Trepicone" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] Joe T's fuel system X-Original-Date: Wed, 9 May 2007 14:59:26 -0400 X-Original-Message-ID: <004d01c7926c$2b580320$0210a8c0@jenny> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004E_01C7924A.A447E9C0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Importance: Normal Thread-Index: AceST0a5WmQMaveEQEWw42LKQz+U/wAGOP6Q In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_004E_01C7924A.A447E9C0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable The header tank was conceived to help protect against inadvertent, short term un-porting of fuel and not as an auxiliary fuel tank. I wanted it = to be as simple as I could make it and as close to the standard Lancair = system as possible. I have a lot of faith in Lancair. =20 I believe you are correct. If I fly around for 6 minutes or so while = header tank runs dry, air will enter the FCU and I'll undoubtedly be making an emergency landing. But on the bright side, if I'm able to fly around = all that time and my fuel pickup can't find any fuel during that entire = time, I doubt that I'll have to worry about landing with fuel in my belly tank. =20 The fuel system you are describing actually does exist and it's = currently flying on at least one IVPT with several others flying soon. It's = produced as a kit by Diemech Turbine Solution Group (the same people who supply engines) and it's been engineered by Chris Skoppe. It incorporates a = low flow, low pressure, fuel pump that transfers fuel out of the belly and = into the left wing. Among other things, the kit has a small, stainless = steel, header tank, mounted on the fire wall with an integrated fuel filter. = My standard parts came from Lancair of course but many others were = purchased from Chris. I found he's always willing to help. The system can bee = seen on their web site. www.diemechturbinesolution.com Joe =20 =20 -----Original Message----- From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = Bill McDonald Sent: Wednesday, May 09, 2007 11:34 AM To: lml@lancaironline.net Subject: [LML] Joe T's fuel system =20 Thinking more about Joe T's fuel system. Excellent way to purge air out of the system. BUT, it is a pretty long = pipe run from the aft baggage to the engine. How do you get rid of that air? In other words, if the header ever gets empty for any reason, air purges great up to the header. Then you have a 7 or 8 ft run of pipe to the engine. How do you purge = that air? The air will have to go through the engine, and you will get a non start = or a very delayed start. Probably delayed enough that the wheels will already be decending in rotations as the batteries = will start to pull down. Then you have inertia against you=20 instead of with you and that is a good way to get a hot start. Ok, good fuel system if the small header was moved as close to the = engine as possible, like on the firewall or attached to the engine mount in the FCU area. =20 Keeping it aft, without a way to purge air from the header to the engine sounds like BIG trouble to me. =20 ------=_NextPart_000_004E_01C7924A.A447E9C0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

The header tank was conceived to help protect against = inadvertent, short term un-porting of fuel and not as an auxiliary fuel tank.  I = wanted it to be as simple as I could make it and as close to the standard Lancair = system as possible.  I have a lot of faith in Lancair.  =

I believe you are correct.  If I fly around for 6 minutes = or so while header tank runs dry, air will enter the FCU and I’ll undoubtedly = be making an emergency landing.  But on the bright side, if I’m = able to fly around all that time and my fuel pickup can’t find any fuel = during that entire time, I doubt that I’ll have to worry about landing = with fuel in my belly tank.

 

The fuel system you are describing actually does exist and = it’s currently flying on at least one IVPT with several others flying = soon.  It’s produced as a kit by Diemech Turbine Solution Group (the same people who = supply engines) and it’s been engineered by Chris Skoppe.  It = incorporates a low flow, low pressure, fuel pump that transfers fuel out of the belly = and into the left wing.  Among other things, the kit has a small, = stainless steel, header tank, mounted on the fire wall with an integrated fuel = filter.  My standard parts came from Lancair of course but many others were = purchased from Chris.  I found he’s always willing to help.  The = system can bee seen on their web site.

www.diemechturbinesolution.com

Joe

 

 

-----Original = Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Bill McDonald
Sent: Wednesday, May 09, 2007 11:34 = AM
To: = lml@lancaironline.net
Subject: [LML] Joe T's = fuel system

 

Thinking more about Joe T's fuel = system.

Excellent way to purge air out of the system. = BUT, it is a pretty long pipe run from the aft baggage to the = engine.

How do you get rid of that air? In other = words, if the header ever gets empty for any reason, air purges great up to the = header.

Then you have a 7 or 8 ft run of pipe to the = engine. How do you purge that air?

The air will have to go through the engine, = and you will get a non start or a very delayed start. Probably delayed = enough

that the wheels will already be decending in = rotations as the batteries will start to pull down. Then you have inertia against = you

instead of with you and that is a good way to = get a hot start.

Ok, good fuel system if the small header was = moved as close to the engine as possible,

like on the firewall or attached to the = engine mount in the FCU area.

 

Keeping it aft, without a way to purge air = from the header to the engine sounds like BIG trouble to me.

 

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