Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2b1) with ESMTP id 3138315 for flyrotary@lancaironline.net; Wed, 31 Mar 2004 07:59:19 -0500 Received: from edward (clt25-78-058.carolina.rr.com [24.25.78.58]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i2VCxFSn012983 for ; Wed, 31 Mar 2004 07:59:17 -0500 (EST) Message-ID: <003101c4171f$fa444660$2402a8c0@edward> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: No rev-2 flying yet (Tracy, see comments in red) Date: Wed, 31 Mar 2004 07:59:17 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002E_01C416F6.1139C0E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_002E_01C416F6.1139C0E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageOk, Thanks, Paul Another data point, it could be that the "Plugs Up" orientation may = be a factor in cold morning starts with the injectors installed away = from the block. =20 Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: sqpilot@earthlink=20 To: Rotary motors in aircraft=20 Sent: Tuesday, March 30, 2004 8:06 PM Subject: [FlyRotary] Re: No rev-2 flying yet (Tracy, see comments in = red) Hi, 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) ------=_NextPart_000_002E_01C416F6.1139C0E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Ok, Thanks, Paul
 
    Another data point, = it could be=20 that the "Plugs Up" orientation may be a factor in cold morning starts = with the=20 injectors installed away from the block. 
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 sqpilot@earthlink
Sent: Tuesday, March 30, 2004 = 8:06=20 PM
Subject: [FlyRotary] Re: No = rev-2 flying=20 yet (Tracy, see comments in red)

Hi, Ed.....I am not trying to answer = for=20 Rusty.....just trying to add my results, as my two injectors in the = TWM=20 throttle 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=20 3 or 4 seconds before coming to life, both early morning, (40 = degrees), mid=20 day ( 70 degrees), or evenings (50? degrees). Most of the time, it = fires up=20 within the first one or two revolutions.  I still have fuel = dripping out=20 of the throttlebody intake holes immediately after shutdown, but I = think that=20 is because it is still too rich.  I finally got my EGT installed, = and it=20 is 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=20 easily.  Just one more opinion.  Paul Conner
----- Original Message -----
From:=20 Ed Anderson
To: Rotary motors in = aircraft=20
Sent: Tuesday, March 30, 2004 = 12:36=20 PM
Subject: [FlyRotary] Re: No = rev-2=20 flying 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=20 4 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=20 turn 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=20 occur because in one fraction of a second you are=20  opearting at WOT (lots of fuel flow)  and the next down = to=20 idle.   
 
 
In thinking about this some more, it = would make sense=20 that I didn't have nearly the same problem before.  In the = rev-1=20 version, I had the primary injectors in the block, and the = secondaries=20 were only about 14 inches away.  Now, all four injectors are = about 30=20 inches away, so there's a lot more fuel left in the intake when = you chop=20 the throttle.
 
I agree with Tracy that this isn't my = normal=20 operating mode, but when testing the engine, I like to try = everything I=20 can think of, so there won't be any unpleasant surprised in=20 flight.  FWIW, the turbo used to throw a nice flame = out the=20 short pipe when I'd chop the throttle, but I don't know if = that would=20 make it to the end of a longer pipe, through a=20 muffler.  
 
Rusty (off to test my O2 reading on = the=20 = EM-2)  
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