Return-Path: Sender: (Marvin Kaye) To: flyrotary@lancaironline.net Date: Tue, 30 Mar 2004 20:06:31 -0500 Message-ID: X-Original-Return-Path: Received: from albatross.mail.pas.earthlink.net ([207.217.120.120] verified) by logan.com (CommuniGate Pro SMTP 4.2b1) with ESMTP id 3137324 for flyrotary@lancaironline.net; Tue, 30 Mar 2004 16:41:09 -0500 Received: from user-33qt4ta.dialup.mindspring.com ([199.174.147.170] helo=Carol) by albatross.mail.pas.earthlink.net with smtp (Exim 3.33 #1) id 1B8Qyo-0007Pl-00 for flyrotary@lancaironline.net; Tue, 30 Mar 2004 13:41:06 -0800 X-Original-Message-ID: <007d01c4169f$af68ab20$0000a398@Carol> From: "sqpilot@earthlink" X-Original-To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: No rev-2 flying yet (Tracy, see comments in red) X-Original-Date: Tue, 30 Mar 2004 15:40:50 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0078_01C4166D.60E986E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2727.1300 This is a multi-part message in MIME format. ------=_NextPart_000_0078_01C4166D.60E986E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageHi, Ed.....I am not trying to answer for Rusty.....just trying to = add my results, as my two injectors in the TWM throttle body are all the = way over on the cool side of the engine also. I don't think I ever = heard the engine crank longer than 3 or 4 seconds before coming to life, = both early morning, (40 degrees), mid day ( 70 degrees), or evenings = (50? degrees). Most of the time, it fires up within the first one or two = revolutions. I still have fuel dripping out of the throttlebody intake = holes immediately after shutdown, but I think that is because it is = still too rich. I finally got my EGT installed, and it is showing = around 700 degrees at an idle speed of around 1500 rpm. (It shows = approximately the same temps around 2500 rpm, maybe up to 790 degrees). = Anyways....as far as starting, I only wish my car would start that = easily. Just one more opinion. Paul Conner ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Tuesday, March 30, 2004 12:36 PM Subject: [FlyRotary] Re: No rev-2 flying yet (Tracy, see comments in = red) I am curious Rusty about how easy/hard to start on a cool morning with = the injectors 30" away. On my last manifold all 4 were approx 24" away = and starting on a cold morning was a b----, I would sometimes use up the = battery charge. Now all 4 injectors are approx 5" away from the inlet = to the combustion chamber and it starts on the first turn or two of the = prop. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Tuesday, March 30, 2004 1:15 PM Subject: [FlyRotary] Re: No rev-2 flying yet (Tracy, see comments in = red) This may occur because in one fraction of a second you are = opearting at WOT (lots of fuel flow) and the next down to idle. =20 In thinking about this some more, it would make sense that I didn't = have nearly the same problem before. In the rev-1 version, I had the = primary injectors in the block, and the secondaries were only about 14 = inches away. Now, all four injectors are about 30 inches away, so = there's a lot more fuel left in the intake when you chop the throttle. I agree with Tracy that this isn't my normal operating mode, but = when testing the engine, I like to try everything I can think of, so = there won't be any unpleasant surprised in flight. FWIW, the turbo used = to throw a nice flame out the short pipe when I'd chop the throttle, but = I don't know if that would make it to the end of a longer pipe, through = a muffler. =20 Rusty (off to test my O2 reading on the EM-2) =20 ------=_NextPart_000_0078_01C4166D.60E986E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Hi, Ed.....I am not trying to answer = for=20 Rusty.....just trying to add my results, as my two injectors in the TWM = throttle=20 body are all the way over on the cool side of the engine=20 also.   I don't think I ever heard the engine crank = longer than 3=20 or 4 seconds before coming to life, both early morning, (40 degrees), = mid day (=20 70 degrees), or evenings (50? degrees). Most of the time, it fires up = within the=20 first one or two revolutions.  I still have fuel dripping out of = the=20 throttlebody intake holes immediately after shutdown, but I think that = is=20 because it is still too rich.  I finally got my EGT installed, and = it is=20 showing around 700 degrees at an idle speed of around 1500 rpm. (It = shows=20 approximately the same temps around 2500 rpm, maybe up to 790 = degrees). =20 Anyways....as far as starting, I only wish my car would start that = easily. =20 Just one more opinion.  Paul Conner
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Tuesday, March 30, 2004 = 12:36=20 PM
Subject: [FlyRotary] Re: No = rev-2 flying=20 yet (Tracy, see comments in red)

I am curious Rusty about how = easy/hard to start=20 on a cool morning with the injectors 30" away.  On my last = manifold all 4=20 were approx 24" away and starting on a cold morning was a b----, I = would=20 sometimes use up the battery charge.  Now all 4 injectors are = approx 5"=20 away from the inlet to the combustion chamber and it starts on the = first turn=20 or two of the prop.
 
Ed
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 Russell=20 Duffy
To: Rotary motors in = aircraft=20
Sent: Tuesday, March 30, 2004 = 1:15=20 PM
Subject: [FlyRotary] Re: No = rev-2=20 flying yet (Tracy, see comments in red)

This may occur because in = one=20 fraction of a second you are  opearting at WOT (lots of = fuel flow)=20  and the next down to idle.   
 
 
In thinking=20 about this some more, it would make sense that I didn't have nearly = the same=20 problem before.  In the rev-1 version, I had the primary = injectors in=20 the block, and the secondaries were only about 14 inches away.  = Now,=20 all four injectors are about 30 inches away, so there's a lot more = fuel left=20 in the intake when you chop the = throttle.
 
I agree with=20 Tracy that this isn't my normal operating mode, but when testing the = engine,=20 I like to try everything I can think of, so there won't be any = unpleasant=20 surprised in flight.  FWIW, the turbo used to throw a = nice=20 flame out the short pipe when I'd chop the throttle, but I don't=20 know if that would make it to the end of a longer pipe, = through a=20 muffler.  
 
Rusty (off to=20 test my O2 reading on the=20 = EM-2)  
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