Return-Path: Received: from fed1rmmtao06.cox.net ([68.230.241.33] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 383180 for flyrotary@lancaironline.net; Sun, 29 Aug 2004 03:10:33 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.33; envelope-from=daveleonard@cox.net Received: from davidandanne ([68.111.224.107]) by fed1rmmtao06.cox.net (InterMail vM.6.01.03.02.01 201-2131-111-104-103-20040709) with SMTP id <20040829071001.HNEX22016.fed1rmmtao06.cox.net@davidandanne> for ; Sun, 29 Aug 2004 03:10:01 -0400 From: "DaveLeonard" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Engine run - Good news/bad news Date: Sun, 29 Aug 2004 00:10:05 -0700 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0038_01C48D5C.893A6630" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0038_01C48D5C.893A6630 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Al, congrats on the good run. Now you have convinced me to install more volume in my system as well to see if I can make things even smoother. Too bad about the clogged PSRU. Before you take every thing apart stick a probe into the inlets and outlets to see if you can find something stuck there. But even if you do have to take everything apart it only takes a few hours. Could be worse, you could be sanding fiberglass. Dave Leonard (almost finished with new gear leg and intersection fairings.. itch itch scratch scratch) Some further sorting out on the engine today. The major good news/ bad news: 1.. I teed together the rotor 2&3 MAP ports with the rotor 1 port, and added about an 18" length of 3/8 dia vinyl hose before the EC2 port to add some accumulator volume. Started the engine and YES; achieved smooth running at 1600 rpm with the mixture setting between 1:00 - 2:00 position. Joy! J Thank you Dave, Mike, Rusty. (Yes this constitutes poor experimental practice, making two changes at the same time, but I can check that later.) 2.. The joy was short-lived because it was only a one minute run while I had the redrive drain line disconnected. Taking the drain line off gave the first clue. No sign that a drop of oil had ever been there. The amount of oil in the container after the run - zippo; not a drop. I took off the feed line and there was oil sitting in the fitting. Feeding to a container, I ran again for less than 30 seconds, and sent more than a pint into the container. Complete blockage inside the drive. The prospect of removing the prop, drive and disassembly is not a happy one. Other items: 1.. Adjusted calibration of temp readings to be correct at room temp, and checked response of all senders with heat gun. All responded normally. High temperature calibration check coming later; I'm picking up pyrometer gun from a friend tomorrow. Some spots of flat black paint in key places should give me a good check - ah-h-h; when I can run again. He is also giving me a fuel pressure guage to verify FP readout. 2.. Checked voltage reading, compared voltage at pin 9 connector P3 (EM2 disconnected) with readout from EM2. Differred by 0.1 volts. For roughly a 10' run of #22 wire that suggests about 0.6 amps. I don't recall the EM2 draw, but this seems close enough 3.. Tried to check the O2 sensor output using a flame from a propane torch. Nothing. I'll probably try again to get a voltage reading at the sensor when I can run again. It still gives close to full scale reading no matter what mixture setting. ------=_NextPart_000_0038_01C48D5C.893A6630 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Al,=20 congrats on the good run.  Now you have convinced me to install = more volume=20 in my system as well to see if I can make things even=20 smoother.
 
Too=20 bad about the clogged PSRU.  Before you take every thing apart = stick a=20 probe into the inlets and outlets to see if you can find something stuck = there.  But even if you do have to take everything apart it only = takes a=20 few hours.  Could be worse, you could be sanding=20 fiberglass.
 
Dave=20 Leonard (almost finished with new gear leg and intersection fairings..=20 itch  itch scratch scratch)
 

Some further sorting = out on the=20 engine today.  The major good news/ bad news:

 

  1. I teed together the = rotor=20 2&3 MAP ports with the rotor 1 port, and added about an = 18” length of=20 3/8 dia vinyl hose before the EC2 port to add some accumulator = volume.=20  Started the engine and YES; achieved smooth running at 1600 = rpm with=20 the mixture setting between 1:00 – = 2:00=20 position.  Joy! J=20 Thank you Dave, Mike, Rusty.  (Yes this constitutes poor = experimental=20 practice, making two changes at the same time, but I can check that=20 later.)

 

  1. The joy was = short-lived=20 because it was only a one minute run while I had the redrive drain = line=20 disconnected.  Taking the drain line off gave the first = clue.  No=20 sign that a drop of oil had ever been there.  The amount of oil = in the=20 container after the run – zippo; not a drop.  I took off = the feed line=20 and there was oil sitting in the fitting.  Feeding to a = container, I=20 ran again for less than 30 seconds, and sent more than a pint into = the=20 container.  Complete blockage inside the drive.  The = prospect of=20 removing the prop, drive and disassembly is not a happy = one.=20

 

Other = items:

 

  1. Adjusted calibration = of temp=20 readings to be correct at room temp, and checked response of all = senders=20 with heat gun.  All responded normally.  High temperature=20 calibration check coming later; I’m picking up pyrometer gun = from a friend=20 tomorrow.  Some spots of flat black paint in key places should = give me=20 a good check – ah-h-h; when I can run again.  He is also = giving me a=20 fuel pressure guage to verify FP readout.=20
  2. Checked voltage = reading,=20 compared voltage at pin 9 connector P3 (EM2 disconnected) with = readout from=20 EM2.  Differred by 0.1 volts.  For roughly a 10’ run = of #22 wire=20 that suggests about 0.6 amps.  I don’t recall the EM2 = draw, but this=20 seems close enough=20
  3. Tried to check the = O2 sensor=20 output using a flame from a propane torch.  Nothing.  = I’ll=20 probably try again to get a voltage reading at the sensor when I can = run=20 again.  It still gives close to full scale reading no matter = what=20 mixture setting.

 

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