X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost03.isp.att.net ([207.115.11.53] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2734259 for flyrotary@lancaironline.net; Sun, 17 Feb 2008 22:45:04 -0500 Received-SPF: pass receiver=logan.com; client-ip=207.115.11.53; envelope-from=bbradburry@bellsouth.net Received: from arptk8ng400 (adsl-146-126-24.mco.bellsouth.net[72.146.126.24]) by isp.att.net (frfwmhc03) with SMTP id <20080218034422H0300i4vike>; Mon, 18 Feb 2008 03:44:22 +0000 X-Originating-IP: [72.146.126.24] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] staging Date: Sun, 17 Feb 2008 22:44:42 -0500 Message-ID: <24213EAD0976489798E1DC6A22890CA3@ARPTK8NG400> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01C871B6.B054C070" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AchxzMakI+DU1P3uSK6PQkTTw9BEZwAEwKsg X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16545 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01C871B6.B054C070 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Don, if your mixture is not showing, you may be lean. Are you sure you are getting plenty of fuel to support the higher rpms? You may also be low on gas. When my tanks get low enough to unport the inlet, I get air in the line and the pump starts to squeal. If you have plenty of fuel, you may have an air leak letting bubbles in the line causing the same effect. Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Don Wallker Sent: Thursday, February 28, 2008 8:24 PM To: Rotary motors in aircraft Subject: [FlyRotary] staging The list has been a little quiet lately, so here goes. I'm the guy who couldn't get his Renesis going. Turns out a capacitor was missing for the EC-2. Then it would only start on a rare occation. Turns out it needed a 1000 ohm resistor across the CAS line as noise was changing the timing. Now, Stageing is difficult. Auto tune isn't really working and I have resolved that I will do it manually. It kind of works, but takes a long time and it's easier to just do it manually. My suspicion is that the manifold pressure is not holding steady enough, but now I am not so sure. I even added 2 ports near the throttle body, but it is still erratic. Even teed them together with the back ports. Now back to staging. I get up to 19 inches, the staging * turns off and the engine start bucking. Tryed mode 6, setting for larger injectors (I am running stock renesis 295 primaries and 610 secondaries) Still bucks. Tried mode 6 turning down flow rate. At about 20 inches I was able to get it to even out, but it still bucks at 19, 19.5 and it bucks so bad that I can't get it to 21. I assume it is flooding as I was able to get it to run at 20 inches, but can't get it to change at any other setting. The EM-2 is erratic. The grafical mixture moniter, works and displays most of the time at lower manifold settings, but the higher the setting, the less it displays. At 19 inches, it only displays about 5% of the time. Kind of hard to set things if I have no feedback. Even stuck in a new O2 sensor to no avail. I can't run it long at these power levels, as I quickly get to 210 degrees. My suspicion is there is a root cause of all this EM-2 erratic displaey stuff. My very uneducated guess is that electical noise is causing all these problems. Your thoughts?? Solutions? To add more problems, at high temps, I heard a squeel, then it stopped. Then it happened again. I didn't know what it was, so shut down. Couldn't get it restarted. Pumps sounded funny and no fuel pressure. Seems pumps over heated and cavitated as 5 minuets later, they started working. They are shielded and with a cool tube blowing on them. Apparently not enough. Your suggestions are very appreciated. Tracy??? Oh, yeah. If I disconnect the secondary injectors, it won't buck. Don Walker Frustrated RV-8 renesis builder Now I'm e-mailing the Dynon list to find out why it won't display GPS data ------=_NextPart_000_0000_01C871B6.B054C070 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Don, if your mixture is not showing, you may be lean.  Are = you sure you are getting plenty of fuel to support the higher rpms?  = You may also be low on gas.  When my tanks get low enough to unport the = inlet, I get air in the line and the pump starts to squeal.  If you have = plenty of fuel, you may have an air leak letting bubbles in the line causing the = same effect.

 

Bill B 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Don Wallker
Sent: Thursday, February = 28, 2008 8:24 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] = staging

The list has been a little quiet lately, so here = goes.  I'm the guy who couldn't get his Renesis going. Turns out a capacitor = was missing for the EC-2.  Then it would only start on a rare = occation.  Turns out it needed a 1000 ohm resistor across the CAS line as noise was changing the timing.  Now, Stageing is difficult.  Auto tune = isn't really working and I have resolved that I will do it manually.  It = kind of works, but takes a long time and it's easier to just do it = manually.  My suspicion is that the manifold pressure is not holding steady enough, = but now I am not so sure.  I even added 2 ports near the throttle body, but = it is still erratic.  Even teed them together with the back ports.  = Now back to staging. 

I get up to 19 inches, the staging * turns off = and the engine start bucking.  Tryed mode 6, setting for larger injectors = (I am running stock renesis 295 primaries and 610 secondaries)  Still bucks.  Tried mode 6 turning down flow rate.  At about 20 = inches I was able to get it to even out, but it still bucks at 19, 19.5 and it = bucks so bad that I can't get it to 21.  I assume it is flooding as I was able = to get it to run at 20 inches, but can't get it to change at any other = setting.  The EM-2 is erratic.  The grafical mixture moniter, works and = displays most of the time at lower manifold settings, but the higher the setting, = the less it displays.  At 19 inches, it only displays about 5% of the time. Kind of hard to set things if I have no feedback.  = Even stuck in a new O2 sensor to no avail.   I can't run it = long at these power levels, as I quickly get to 210 degrees. My suspicion is = there is a root cause of all this EM-2 erratic displaey stuff.  My very = uneducated guess is that electical noise is causing all these problems.  Your thoughts??  Solutions?

To add more problems, at high temps, I heard a = squeel, then it stopped.  Then it happened again.  I didn't know what it = was, so shut down.  Couldn't get it restarted.  Pumps sounded funny = and no fuel pressure.  Seems pumps over heated and cavitated as 5 minuets = later, they started working.  They are shielded and with a cool tube = blowing on them. Apparently not enough.  Your suggestions are very = appreciated.  Tracy???  Oh, yeah.  If I disconnect the secondary injectors, it won't = buck.

 

Don Walker

Frustrated RV-8 renesis = builder

 

Now I'm e-mailing the Dynon list to find out why it = won't display GPS data

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