X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-banded.atl.sa.earthlink.net ([209.86.89.70] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2185079 for flyrotary@lancaironline.net; Wed, 18 Jul 2007 10:29:11 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.70; envelope-from=CBarber@TexasAttorney.net Received: from [64.91.181.4] (helo=BLF) by elasmtp-banded.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1IBAW0-0007fV-0y for flyrotary@lancaironline.net; Wed, 18 Jul 2007 10:28:32 -0400 From: "Christopher Barber" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: RPM's and intake leaks Date: Wed, 18 Jul 2007 09:26:41 -0600 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0BA0_01C7C91D.BFB80050" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 In-Reply-To: Importance: Normal X-ELNK-Trace: 04a7e290e6af3b12d3631fa4f7b525ef239a348a220c260958f0c733bd930b9efbf13f14c5f952928483c75118a9a15a350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 64.91.181.4 This is a multi-part message in MIME format. ------=_NextPart_000_0BA0_01C7C91D.BFB80050 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Yeah, I will be shooting for 800. 400 was just the number that it was running at for a bit.....VERY badly, but it was achieved, which seemed to verify I got the air leaks licked. Now to better tune the thing and the PSRU issue and continue the quest. All the best, Chris Christopher Barber Attorney and Counselor at Law 5110 Bissonnet, No 418 Bellaire, Texas 77401 Serving the Needs of Senior Texans 281-464-LAWS (5297) 281-754-4168 Fax www.TexasAttorney.net -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Ed Anderson Sent: Wednesday, July 18, 2007 4:53 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: RPM's and intake leaks Glad to hear you got the idle speed down, Chris. Air leaks are the most common cause. You may be asking a bit much for the engine with the light mass of the prop to idle nicely at 400 rpm. I would suggest that 800 rpm is really excellent. My normal idle speed is 1600 rpm FWIW Ed ----- Original Message ----- From: Christopher Barber To: Rotary motors in aircraft Sent: Tuesday, July 17, 2007 10:49 PM Subject: [FlyRotary] RPM's and intake leaks Went to the hangar early this afternoon (hey, it was my day off...I lounged around a bit this am and watched Flyboys from PPV....mediocre, but lots of plane stuff) and took off the revisited every orifice, recapped and sealed every potential for leaks. I found two that were probable the cuprits. I also ground down some old screw points on the top of the engine to allow a much more natural lay for the Mistral runners. Got in, and started the engine. It was a bit tough, but if finally caught AND it was running COMPLETLY differently. I was able to have it run all the way down to 400 RPM.....however it runs like.....uh, poorly this low. The engine was surging and running very rough even when I increased the throttle, then I remembered that I had started to tune it with the higher RPM's. So, I reset the ECU, actually, I figured to do this just after it started and it actually started after only a short rest (as of now, it really has not liked to start for a while once it is shut down). It was runny rough, but I got it into autotune mode and things started to smooth out. I had it running about 15 minutes at lower RPM and began to worry about temps since it has been an issue. I took it out of autotune mode and the H2O temp was 158 and the oil was around 173.....MUCH BETTER. As we mentioned, we have a leak in the PSRU, which seems to be getting worse, so I didn't want to run it too much 'till we figure the leak out. I wanted to start it for an EAA sister chapter (EAA 712) meeting at my hangar tonight. So I cleaned the hangar a bit. When the EAA chapter arrived and I had an audiance the thing would not start. Of course. The injectors firing at 3000 in Mode Zero reared its head again and I am guessing it flooded the engine. So, even though it would not start this evening I consider it a good day as we seemed to get the rpms down. Now to investigate the PSRU issue as well as get this thing running more smothly again. Just one more step. All the best, Chris Cross posted in Flyrotary ------=_NextPart_000_0BA0_01C7C91D.BFB80050 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yeah,=20 I will be shooting for 800.  400 was just the number that it was = running at=20 for a bit.....VERY badly, but it was achieved, which seemed to verify I = got the=20 air leaks licked.  Now to better tune the thing and the PSRU = issue and=20 continue the quest.
 
All=20 the best,
 
Chris
 

Christopher Barber
Attorney and Counselor at = Law
5110=20 Bissonnet, No 418
Bellaire, Texas 77401

Serving the Needs of = Senior=20 Texans

281-464-LAWS (5297)
281-754-4168 = Fax
www.TexasAttorney.net=20

-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Ed=20 Anderson
Sent: Wednesday, July 18, 2007 4:53 = AM
To: Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: RPM's and intake = leaks

Glad to hear you got the idle speed down, = Chris. =20 Air leaks are the most common cause.  You may be asking a bit = much for=20 the engine with the light mass of the prop to idle nicely at=20 400 rpm.  I would suggest that  800 rpm is really=20 excellent.  My normal idle speed is 1600 rpm FWIW
 
Ed
----- Original Message -----
From:=20 Christopher Barber =
To: Rotary motors in = aircraft=20
Sent: Tuesday, July 17, 2007 = 10:49=20 PM
Subject: [FlyRotary] RPM's = and intake=20 leaks

Went to the hangar early this afternoon (hey, it was my day = off...I=20 lounged around a bit this am and watched Flyboys from = PPV....mediocre, but=20 lots of plane stuff) and took off the revisited every orifice, = recapped and=20 sealed every potential for leaks.  I found two that were = probable the=20 cuprits.  I also ground down some old screw points on the top = of the=20 engine to allow a much more natural lay for the Mistral runners.

 

Got in, and started the engine.  It was a bit tough, but if = finally=20 caught AND it was running COMPLETLY differently.  I was able to = have it=20 run all the way down to 400 RPM.....however it runs like.....uh, = poorly this=20 low.  The engine was surging and running very rough even when I = increased the throttle, then I remembered that I had started to tune = it with=20 the higher RPM's.  So, I reset the ECU, actually, I figured to = do this=20 just after it started and it actually started after only a short = rest (as of=20 now, it really has not liked to start for a while once it is shut = down).

 

It was runny rough, but I got it into autotune mode and things = started to=20 smooth out.  I had it running about 15 minutes at lower RPM and = began=20 to worry about temps since it has been an issue.  I took it out = of=20 autotune mode and the H2O temp was 158 and the oil was around = 173.....MUCH=20 BETTER.

 

As we mentioned, we have a leak in the PSRU, which seems to be = getting=20 worse, so I didn't want to run it too much 'till we figure the leak=20 out.  I wanted to start it for an EAA sister chapter (EAA 712) = meeting=20 at my hangar tonight. So I cleaned the hangar a bit.  When the = EAA=20 chapter arrived and I had an audiance the thing would not = start.  Of=20 course. The injectors firing at 3000 in Mode Zero reared its = head again=20 and I am guessing it flooded the engine.

 

So, even though it would not start this evening I consider it a = good day=20 as we seemed to get the rpms down.  Now to investigate the PSRU = issue=20 as well as get this thing running more smothly again.  Just one = more=20 step.

 

All the best,

 

Chris

 

Cross posted in Flyrotary

 

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