X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.25.9.102] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTP id 2075766 for flyrotary@lancaironline.net; Wed, 30 May 2007 20:56:01 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-03.southeast.rr.com (8.13.6/8.13.6) with SMTP id l4V0tAHn015127 for ; Wed, 30 May 2007 20:55:11 -0400 (EDT) Message-ID: <002a01c7a31e$5cea6500$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Engine data Date: Wed, 30 May 2007 20:55:20 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0027_01C7A2FC.D582DCD0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0027_01C7A2FC.D582DCD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Wait! Isn't your coolant out of the engine suppose to be higher than = coolant in {:>). But, your temperatures look nice and reasonable for = your rpm. You don't say how long you were running which of course is = another factor - I assume steady state at 2500 rpm? Bill, I normally shut off my engine by switching off the injectors, so = it dies immediately, within 1 revolution or less. I'll try turning off = the fuel pumps next time out and let you know how long it takes. I'm glad to see you are collecting data - next you will have to show me = your duct data - I really liked the way you mated your ducts to your = forward cowl. Ed ----- Original Message -----=20 From: Bill Schertz=20 To: Rotary motors in aircraft=20 Sent: Wednesday, May 30, 2007 8:27 PM Subject: [FlyRotary] Engine data Okay Ed, Enclosed is a chart of some data from my second engine run. Clearly I = have more work to do, since my coolant out temperature is higher than my = coolant in temperature!! I thought I had the calibrations done, but they = are different sensors so I will have to recalibrate them. Looks like you can tell when the oil thermostat opened. Temp was = climbing steadily and then leveled off. Lots more work to do. The engine is running very rich, I think I need = to use mode 3 to reduce injector flow rate. Also have the following = phenomena -- when I shut off the fuel pumps, the engine continues to run = just fine.I stopped the engine by shutting off the injectors. My last experiment was plugging the inlet and outlet lines (they = currently are drawing/returning to a 5 gallon can) and then starting the = engine without turning on the fuel pump at all (there was residual = pressure showing). The engine ran for 3 minutes, and really smoothed out = as the fuel pressure dropped to about 8 psi, and the fuel rich indicator = on the EM-2 moved down into a reasonable range. I think what is happening is that the fuel filters are mounted = horizontally, and can trap some air in the top of the filter, which then = serves to maintain the flow to the engine.=20 How fast does your engine die when you shut off the fuel pump? Bill Schertz Bill Schertz KIS Cruiser #4045 -------------------------------------------------------------------------= ----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0027_01C7A2FC.D582DCD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Wait! Isn't your coolant out of the engine = suppose to be=20 higher than coolant in {:>).  But, your temperatures look nice = and=20 reasonable for your rpm.  You don't say how long you were running = which of=20 course is another factor - I assume steady state at 2500 = rpm?
 
Bill, I normally shut off my engine by switching = off the=20 injectors, so it dies immediately, within 1 revolution or less.  = I'll try=20 turning off the fuel pumps next time out and let you know how long it=20 takes.
 
I'm glad to see you are collecting data - next=20 you will have to show me your duct data - I really liked the way = you mated=20 your ducts to your forward cowl.
 
Ed
----- Original Message -----
From:=20 Bill=20 Schertz
Sent: Wednesday, May 30, 2007 = 8:27=20 PM
Subject: [FlyRotary] Engine = data

Okay Ed,
Enclosed is a chart of some data from = my second=20 engine run. Clearly I have more work to do, since my coolant out = temperature=20 is higher than my coolant in temperature!! I thought I had the = calibrations=20 done, but they are different sensors so I will have to recalibrate=20 them.
 
Looks like you can tell when the oil = thermostat=20 opened. Temp was climbing steadily and then leveled off.
 
Lots more work to do. The engine is = running very=20 rich, I think I need to use mode 3 to reduce injector flow rate. Also = have the=20 following phenomena -- when I shut off the fuel pumps, the engine = continues to=20 run just fine.I stopped the engine by shutting off the = injectors.
 
 My last experiment was plugging = the inlet=20 and outlet lines (they currently are drawing/returning to a 5 gallon = can) and=20 then starting the engine without turning on the fuel pump at all = (there was=20 residual pressure showing). The engine ran for 3 minutes, and really = smoothed=20 out as the fuel pressure dropped to about 8 psi, and the fuel rich = indicator=20 on the EM-2 moved down into a reasonable range.
 
I think what is happening is that the = fuel=20 filters are mounted horizontally, and can trap some air in the top of = the=20 filter, which then serves to maintain the flow to the engine. =
 
How fast does your engine die when = you shut off=20 the fuel pump?
 
Bill Schertz
 
 
 
 
 
Bill Schertz
KIS Cruiser = #4045

--
Homepage:  http://www.flyrotary.com/
Archive and=20 UnSub:  =20 = http://mail.lancaironline.net:81/lists/flyrotary/List.html
------=_NextPart_000_0027_01C7A2FC.D582DCD0--