Return-Path: <13brv3@bellsouth.net> Received: from imf25aec.mail.bellsouth.net ([205.152.59.73] verified) by logan.com (CommuniGate Pro SMTP 4.2.4) with ESMTP id 454595 for flyrotary@lancaironline.net; Wed, 06 Oct 2004 08:54:22 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.73; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf25aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20041006125352.UHYL1789.imf25aec.mail.bellsouth.net@rd> for ; Wed, 6 Oct 2004 08:53:52 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: #$!%@$ temperatures still high Date: Wed, 6 Oct 2004 07:53:54 -0500 Message-ID: <000001c4aba3$8b3baf60$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C4AB79.A265A760" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C4AB79.A265A760 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable [Steve Brooks] I have the 2.17 drive, and I'm seeing about 5300 RPM's in climb. I don't have a MAP gauge, but rather a boost gauge. I could calculate the MAP, but on take off, I'm setting the throttle to 5 lbs of boost, which seems like plenty. Full throttle will produce about 8 lbs = of boost, with substantially more power. =20 =20 Hi Steve. I was just curious how much power you were making, to see if = that was part of the reason you were having trouble cooling. At 5 psi, you = would be at 40" MAP if you're starting out near sea level, so you'll certainly have more heat to deal with than the average (NA) engine, but not so = much that it should be unmanageable. A little more tweaking with the ducts = will probably get you where you need to be. =20 [Steve Brooks] I tried that, and have it as lean as it will go on mode = 1. I haven't tune it above 4000 RPM's yet. I can't hold the plane still = with the brakes, and haven't been in the air long enough to do it there. I = may be able to resolve the rich running at high RPM's. Mode 3 tuning = doesn't seem to be working. =20 As much as I joke about "backwards plastic planes", the only real disadvantage they seem to have is the inability to tie them down for testing. I can't personally imagine not doing full throttle = tuning/testing on the ground. There must be some way to restrain that thing enough to = tune it on the ground. =20 As for mode 3, it's always worked for me, but it does seem to take a few more pokes at the button than I would have guessed. In other words, it doesn't seem too sensitive. BTW, what injectors are you running to be = so rich with only 30 psi of fuel pressure? Hope your cool morning flight works out well so you can get some air = time. =20 Rusty =20 =20 ------=_NextPart_000_0001_01C4AB79.A265A760 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
[Steve Brooks] I have the 2.17 drive, and I'm seeing about = 5300 RPM's=20 in climb.  I don't have a MAP gauge, but rather a boost = gauge.  I=20 could calculate the MAP, but on take off, I'm setting the throttle to 5 = lbs of=20 boost, which seems like plenty.  Full throttle will produce about 8 = lbs of=20 boost, with substantially more power.  
 
Hi=20 Steve.  I was just curious how much power you were making, to see = if that=20 was part of the reason you were having trouble cooling.  At 5 = psi, you=20 would be at 40" MAP if you're starting out near sea level, so = you'll=20 certainly have more heat to deal with than the average (NA) engine, but = not so=20 much that it should be unmanageable.  A little more tweaking = with the=20 ducts will probably get you where you need to be. =20  

[Steve=20 Brooks]  I tried that, and have it as lean as it will go on mode = 1.  I=20 haven't tune it above 4000 RPM's yet.  I can't hold the plane still = with=20 the brakes, and haven't been in the air long enough to do it = there.  I=20 may be able to resolve the rich running at high RPM's.  Mode 3 = tuning=20 doesn't seem to be working.  

As much as I = joke about=20 "backwards plastic planes", the only real disadvantage they seem to have = is the=20 inability to tie them down for testing.  I can't personally imagine = not=20 doing full throttle tuning/testing on the ground.  There must = be some=20 way to restrain that thing enough to tune it on the=20 ground.  

As for=20 mode 3, it's always worked for me, but it does seem to take a = few more=20 pokes at the button than I would have guessed.  In other words, it = doesn't=20 seem too sensitive.  BTW, what injectors are you running to be so = rich with=20 only 30 psi of fuel=20 pressure?

Hope your cool = morning=20 flight works out well so you can get some air=20 time.  

Rusty

     

 
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