X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA08.westchester.pa.mail.comcast.net ([76.96.62.80] verified) by logan.com (CommuniGate Pro SMTP 5.2.8) with ESMTP id 3185100 for flyrotary@lancaironline.net; Wed, 24 Sep 2008 10:42:21 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.62.80; envelope-from=wschertz@comcast.net Received: from OMTA03.westchester.pa.mail.comcast.net ([76.96.62.27]) by QMTA08.westchester.pa.mail.comcast.net with comcast id JcJi1a0020bG4ec58ehb0M; Wed, 24 Sep 2008 14:41:35 +0000 Received: from WschertzPC ([71.57.77.95]) by OMTA03.westchester.pa.mail.comcast.net with comcast id Jeha1a00F23NHuF3Pehaal; Wed, 24 Sep 2008 14:41:35 +0000 X-Authority-Analysis: v=1.0 c=1 a=_oXmLl1zfDa_ktDZ0fAA:9 a=wMY9S25JgngK8XxcKHJNmTxRBFgA:4 a=v47ZLdibA2YA:10 a=9fhH7G3Emt9tFWrmbekA:9 a=unLoQ6BkqjvrD6J-IB8A:7 a=A7wQNkUmXxDgWLjMhEnWzo0Fi9cA:4 a=4vB-4DCPJfMA:10 a=EzXvWhQp4_cA:10 a=AfD3MYMu9mQA:10 Message-ID: <8BA1EF9C133C4EE78A9C8F096C949D32@WschertzPC> From: "Bill Schertz" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Vacuum Pulses Date: Wed, 24 Sep 2008 09:41:23 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0019_01C91E29.B4B84F40" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6000.16480 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16669 This is a multi-part message in MIME format. ------=_NextPart_000_0019_01C91E29.B4B84F40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Al, I was having some trouble with over-rich, associated with the coupling = of the Blue Mountain unit to the Tach signal from the EC-2. I will = explore higher fuel pressure as one parameter as I sort out other items. Ed, The coolant temperature probes are different types, and I have had = difficulty in getting them calibrated to sufficient accuracy to allow = proper comparison. The coolant in probe is the coolant INTO the = radiator, and the coolant out probe is the coolant EXITING the radiator, = which you would expect to be lower (not higher) than the entry fluid. = May have to make a new probe. By the way, I notice that I get natural circulation of the coolant = through the system after shut-down.=20 Bill Schertz KIS Cruiser #4045 N343BS ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Wednesday, September 24, 2008 9:38 AM Subject: [FlyRotary] Re: Vacuum Pulses I am new at this engine running thing, having just done the third = start/run . I have some instrumentation, and am enclosing a plot of = Manifold pressure and Fuel pressure vs. time for the latest run. After = letting it warm up at ~14 in MP , I started increasing the power, and = you can see that the fuel pressure increases with the MP. Made one = brief excursion to ~5900 rpm, swinging a 76x76 prop. All tests so far are with the cowl off, but the ducts are in place. Bill; Lookin' good. It does seem that the fuel pressure is running a bit = low, but I guess it depends on your injectors. Most are rated at a = pressure of 40 -43 psi., so when your MAP is 30, the fuel pressure is = about 40 psi. I set my pressure a t 40 with engine off; and it then = comes down into the low 30's when at idle. Al G ------=_NextPart_000_0019_01C91E29.B4B84F40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Al,
I was having some trouble with = over-rich,=20 associated with the coupling of the Blue Mountain unit to the Tach = signal from=20 the EC-2. I will explore higher fuel pressure as one parameter as I sort = out=20 other items.
 
Ed,
The coolant temperature probes are = different types,=20 and I have had difficulty in getting them calibrated to sufficient = accuracy to=20 allow proper comparison. The coolant in probe is the coolant INTO the = radiator,=20 and the coolant out probe is the coolant EXITING the radiator, which you = would=20 expect to be lower (not higher) than the entry fluid.  May have to = make a=20 new probe.
 
By the way, I notice that I get natural = circulation=20 of the coolant through the system after shut-down.
 
Bill Schertz
KIS Cruiser=20 #4045
N343BS
----- Original Message -----
From:=20 Al = Gietzen=20
Sent: Wednesday, September 24, = 2008 9:38=20 AM
Subject: [FlyRotary] Re: Vacuum = Pulses

 

I am new at this engine = running=20 thing, having just done the third start/run . I have some = instrumentation, and=20 am enclosing a plot of Manifold pressure and Fuel pressure vs. time = for the=20 latest run. After letting it warm up at ~14 in MP , I started = increasing the=20 power, and you can see that the fuel pressure increases with the = MP. =20 Made one brief excursion to ~5900 rpm, swinging a 76x76=20 prop.

All tests so far are = with the cowl=20 off, but the ducts are in place.

 

Bill;

 

Lookin=92=20 good.  It does seem that the fuel pressure is running a bit = low, but I=20 guess it depends on your injectors.  Most are rated at a = pressure of 40=20 -43 psi., so when your MAP is 30, the fuel pressure is about 40 = psi.  I=20 set my pressure a t 40 with engine off; and it then comes down into = the low=20 30=92s when at idle.

 

Al=20 = G

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