Return-Path: Received: from mail.tsisp.com ([65.23.108.44] verified) by logan.com (CommuniGate Pro SMTP 4.2.4) with ESMTP-TLS id 455499 for flyrotary@lancaironline.net; Wed, 06 Oct 2004 18:40:41 -0400 Received-SPF: none receiver=logan.com; client-ip=65.23.108.44; envelope-from=prvt_pilot@yahoo.com Received: from stevehome by mail.tsisp.com (Technical Support Inc.) with SMTP id CQA74584 for ; Wed, 06 Oct 2004 18:40:10 -0400 Reply-To: From: "Steve Brooks" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: #$!%@$ temperatures still high Date: Wed, 6 Oct 2004 18:41:33 -0400 Message-ID: <012901c4abf5$a32f4da0$6400a8c0@workgroup.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_012A_01C4ABD4.1C1DADA0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_012A_01C4ABD4.1C1DADA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit MessageRusty, Flying didn't work out too well this morning. I ended up having to work all day instead, which isn't nearly as fun. Airport is 600 MSL, so pretty near SL. I think that the instructions said that only do mode 3 3-4 clicks, so that was all I did. Maybe just need more. I have the stock turbo injectors that came with the engine, and I am suspicious of the fuel pressure gauge that I have. It reads 0-100 lbs, and is only about an inch or slightly more in diameter. I think that it is reading low. Steve -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent: Wednesday, October 06, 2004 8:54 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: #$!%@$ temperatures still high [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. 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. [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. 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. 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. Rusty ------=_NextPart_000_012A_01C4ABD4.1C1DADA0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Rusty,
Flying=20 didn't work out too well this morning.  I ended up having to work = all day=20 instead, which isn't nearly as fun.  Airport is 600 MSL, so pretty = near=20 SL.
I=20 think that the instructions said that only do mode 3 3-4 clicks, so that = was all=20 I did.  Maybe just need more.  I have the stock turbo = injectors that=20 came with the engine, and I am suspicious of the fuel pressure gauge = that I=20 have.  It reads 0-100 lbs, and is only about an inch or slightly = more in=20 diameter.  I think that it is reading low.
 
Steve
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Russell=20 Duffy
Sent: Wednesday, October 06, 2004 8:54 = AM
To: Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: #$!%@$ = temperatures=20 still high

[Steve Brooks] I have the 2.17 drive, and I'm seeing = about 5300=20 RPM's in climb.  I don't have a MAP gauge, but rather a boost=20 gauge.  I could calculate the MAP, but on take off, I'm setting = the=20 throttle to 5 lbs of boost, which seems like plenty.  Full = throttle will=20 produce about 8 lbs of 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,=20 you 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=20 the 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. =20 I haven't tune it above 4000 RPM's yet.  I can't hold the plane = still=20 with the brakes, and haven't been in the air long enough to do it=20 there.  I may be able to resolve the rich running at=20 high RPM's.  Mode 3 tuning 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=20 the inability to tie them down for testing.  I can't personally = imagine=20 not doing full throttle tuning/testing on the ground.  There = must be=20 some 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=20 more pokes at the button than I would have guessed.  In other = words, it=20 doesn't seem too sensitive.  BTW, what injectors are you running = to be so=20 rich with 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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