X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from omta1.toronto.rmgopenwave.com ([4.59.182.99] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4132961 for flyrotary@lancaironline.net; Sun, 21 Feb 2010 20:21:02 -0500 Received-SPF: pass receiver=logan.com; client-ip=4.59.182.99; envelope-from=lacombr@nbnet.nb.ca Received: from torspm04.toronto.rmgopenwave.com ([142.167.68.133]) by tormtz01.toronto.rmgopenwave.com (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20100222012027.VOBD15090.tormtz01.toronto.rmgopenwave.com@torspm04.toronto.rmgopenwave.com> for ; Sun, 21 Feb 2010 20:20:27 -0500 Received: from PCdeRita ([142.167.68.133]) by torspm04.toronto.rmgopenwave.com with SMTP id <20100222012026.SMFX30831.torspm04.toronto.rmgopenwave.com@PCdeRita> for ; Sun, 21 Feb 2010 20:20:26 -0500 Message-ID: From: "Rino" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Some assistance Please! Date: Sun, 21 Feb 2010 21:20:07 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0066_01CAB33B.A41FF2C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 X-Opwv-CommTouchExtSvcRefID: str=0001.0A020209.4B81DBDB.0051,ss=1,fgs=0 This is a multi-part message in MIME format. ------=_NextPart_000_0066_01CAB33B.A41FF2C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, I will give you my understanding of setting the fuel mixture I did a = couple of weeks ago. I reinstalled the Renesis after overhaul and the = EC3 made a trip to tracy's shop where he replaced one chip. I also = changed my injectors, now I have 4 yellow injectors, two primary and two = secondaries. I adjusted with mode 3 as you did, probably not as much. Then I adjusted mode 2,I turned the program knob clockwise, then I = pressed the program store switch about 10 times because the mixture was = too rich below staging point, I wanted to get a leaner mixture below the = staging point. That gave me a descent situation where the auto mixture = adjust (mode 9) would not go too far off the zero point. I think one = has to spread the mixture difference between below and above the = staging. First I changed the staging point to between 15 and 16 inches manifold. = The factory staging point is set at 19 inches. This does not work for = me because 19 inches of manifold pressure is at about the rpm I use when = I come in for a landing. I do not like the engine to hesitate when I am = getting ready to land, I got other more important things to do at that = time. I used the auto adjust quite a bit around the staging point before it = got to be acceptable. After using auto adjust, there is a step in the map table between = positions 44 and position 45, that is where staging occur in my case. I = still can tell when staging occurs but I now find it quite acceptable. Rino Lacombe ----- Original Message -----=20 From: Bill Bradburry=20 To: Rotary motors in aircraft=20 Sent: Sunday, February 21, 2010 8:33 PM Subject: [FlyRotary] Some assistance Please! First, some news.. I recently redesigned my cooling system due to unable to run the = engine for more than about 20 min at high idle without it overheating. = Now I have the good problem. Granted it was cold..low 60s. But I was = not able to get my oil above about 145 and the water above 185! I ran = it full bore till I got tired of holding the brakes! I still need to do = some work balancing the air between the oil and water. And I didn't = have the cowl on, so the problem is not completely solved, but I am on = the right track! =20 Now the question. I have the Renesis that has the very small red primaries and the very = large blue secondaries. I recently changed them to all yellow. This = removes the need to balance the flow so much when it stages. The total = output is very similar between the two systems. Now I have a larger = flow when on the primaries and the secondaries kick in with a smaller = change. I removed the large secondary option using mode 6. So I checked the mixture at 22 inches manifold pressure and it seemed = fine with mixture at center setting so I deemed that I didn't need to = change the fuel flow with mode 3. BUT when I started to let it auto = tune, I noticed that it was setting all the bins to -127 until after it = staged, then it started to build the graph that you normally see. It = stages at 20 inches manifold pressure. Is that the recommended = pressure? I expected 15"?? So my question is.Should I set the mode 3 at a lower setting? This = will affect the entire range so I am concerned that I will not have = enough fuel at WOT if I do that. Should I make an adjustment using Mode = 2? I don't really understand what dynamic range is?? What are your = thoughts? =20 Thanks, Bill B ------=_NextPart_000_0066_01CAB33B.A41FF2C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bill,
 
I will give you my understanding of = setting the=20 fuel mixture I did a couple of weeks ago.  I reinstalled the = Renesis after=20 overhaul and the EC3 made a trip to tracy's shop where he replaced one=20 chip.  I also changed my injectors, now I have 4 yellow injectors, = two=20 primary and two secondaries.
 
I adjusted with mode 3 as you did, = probably not as=20 much.
Then I adjusted mode 2,I turned the = program knob=20 clockwise, then I pressed the program store switch about 10 times = because=20 the mixture was too rich below staging point, I wanted to get a leaner = mixture=20 below the staging point.   That gave me a descent situation = where the=20 auto mixture adjust (mode 9) would not go too far off the zero=20 point.   I think one has to spread the mixture difference = between=20 below and above the staging.
 
First I changed the staging point to = between 15 and=20 16 inches manifold.  The factory staging point is set at 19 = inches. =20 This does not work for me because 19 inches of manifold pressure is at = about the=20 rpm I use when I come in for a landing.  I do not like the engine = to=20 hesitate when I am getting ready to land, I got other more important = things to=20 do at that time.
 
I used the auto adjust quite a bit = around the=20 staging point before it got to be acceptable.
After using auto adjust, there is a = step in the map=20 table between positions 44 and position 45, that is where staging occur = in my=20 case.  I still can tell when staging occurs but I now find it quite = acceptable.
 
Rino Lacombe
----- Original Message -----
From:=20 Bill=20 Bradburry
Sent: Sunday, February 21, 2010 = 8:33=20 PM
Subject: [FlyRotary] Some = assistance=20 Please!

 First, some = news..

I recently redesigned my cooling system due = to unable=20 to run the engine for more than about 20 min at high idle without it=20 overheating.  Now I have the good problem.  Granted it was = cold..low=20 60s.  But I was not able to get my oil above about 145 and the = water=20 above 185!   I ran it full bore till I got tired of holding = the=20 brakes!  I still need to do some work balancing the air between = the oil=20 and water.  And I didn=92t have the cowl on, so the problem is = not=20 completely solved, but I am on the right = track!

 

Now the = question.

I have the Renesis that has the very small = red=20 primaries and the very large blue secondaries.  I recently = changed them=20 to all yellow.  This removes the need to balance the flow so much = when it=20 stages.  The total output is very similar between the two = systems. =20 Now I have a larger flow when on the primaries and the secondaries = kick in=20 with a smaller change.  I removed the large secondary option = using mode=20 6.

So I checked the mixture at 22 inches = manifold=20 pressure and it seemed fine with mixture at center setting so I deemed = that I=20 didn=92t need to change the fuel flow with mode 3.  BUT when I = started to=20 let it auto tune, I noticed that it was setting all the bins to -127 = until=20 after it staged, then it started to build the graph that you normally=20 see.  It stages at 20 inches manifold pressure.  Is that the = recommended pressure?  I expected = 15=94??

So my question is=85Should I set the mode 3 = at a lower=20 setting?  This will affect the entire range so I am concerned = that I will=20 not have enough fuel at WOT if I do that.  Should I make an = adjustment=20 using Mode 2?  I don=92t really understand what dynamic range = is??=20   What are your thoughts?

 

Thanks,

Bill=20 B

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