X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-db02.mx.aol.com ([205.188.91.96] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5037739 for flyrotary@lancaironline.net; Wed, 29 Jun 2011 22:46:00 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.91.96; envelope-from=shipchief@aol.com Received: from mtaomg-ma04.r1000.mx.aol.com (mtaomg-ma04.r1000.mx.aol.com [172.29.41.11]) by imr-db02.mx.aol.com (8.14.1/8.14.1) with ESMTP id p5U2jGgj032063 for ; Wed, 29 Jun 2011 22:45:16 -0400 Received: from core-ddc004c.r1000.mail.aol.com (core-ddc004.r1000.mail.aol.com [172.29.52.141]) by mtaomg-ma04.r1000.mx.aol.com (OMAG/Core Interface) with ESMTP id 8930AE000085 for ; Wed, 29 Jun 2011 22:45:16 -0400 (EDT) To: flyrotary@lancaironline.net Subject: EC-2 Jumping MAP table adresses X-MB-Message-Source: WebUI X-AOL-IP: 76.22.118.247 X-MB-Message-Type: User MIME-Version: 1.0 From: shipchief@aol.com Content-Type: multipart/alternative; boundary="--------MB_8CE04E6E0AF4F31_1E48_9F2A2_webmail-m002.sysops.aol.com" X-Mailer: AOL Webmail 33912-STANDARD Received: from 76.22.118.247 by webmail-m002.sysops.aol.com (64.12.101.84) with HTTP (WebMailUI); Wed, 29 Jun 2011 22:45:16 -0400 Message-Id: <8CE04E6E0A82B08-1E48-47562@webmail-m002.sysops.aol.com> X-Originating-IP: [76.22.118.247] Date: Wed, 29 Jun 2011 22:45:16 -0400 (EDT) x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:477372320:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d290b4e0be33c4913 This is a multi-part message in MIME format. ----------MB_8CE04E6E0AF4F31_1E48_9F2A2_webmail-m002.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="us-ascii" Just a few technical questions to Tracy and the group: I have an EC2-A1T #274 upgrade 02-15-09 with EM2-B2 #166 While running today, I noticed that the address table would switch back and= forth between #31 and 41, 42,& 43. I checked the Mixture Correction Table Address Assignments (Pg 33 in the ma= nual), and figured that was the jump off point to the 2500- to=20 3800 RPM part of the table. So I ran the engine some more, and noticed that even lower RPMs with addres= ses in the 20's would jump up to 41, 42, 43, some times 44. Then drop back to the original value (+-). Am I getting speed reference noi= se? The engine runs well, and smoothly, except when it jumps to the 40's. During previous runs, Auto tune richened these up, and I smoothed= it with the MAP table screen while shut down. That's another issue which I= can handle. Anyway, my injector wires are a few inches separate from the ignition wires= to the coils. I have an RV-8, and the EC2 unit is mounted in the=20 right fwd baggage well. The wires pass forward thru the firewall separatel= y. Also, I think I noticed some time delay or dead band when rising or droppin= g thru the 2500 RPM threshold. The Address number doesn't=20 change instantly with the RPM. Is that 'as intended'? I ran briefly above 3800 RPM with no problems or changes required to the mi= xture control. So I don't have any obvious problems up there yet. The stagi= ng point occurs @ address 53, and is noticed as a small increase in power, = but no change in mixture reading. Exhaust temps are close, about 5 degrees difference @ 1500 F.=20 I started this run with a 'Test Card' to run in MAP table screen in Track M= ode, and then move to Mode 8 Ignition timing.=20 This was good. I re-read the manual a lot before this run, it paid off. I r= an the engine about 3000 RPM, and moved the timing to both limits a few tim= es while observing the RPM and adjusting the mixture. I settled on the high= est RPM, which is only 1 degree retarded from the baseline, using Tracy's i= nitial installation instructions for installing the Crank Angle Sensor. I have a Turbo engine, with opened rotor cooling jets and a restrictor in t= he oil fitting on the turbo. I get low oil pressure at 1500 RPM about 24 PS= I using 5W-30 oil, about 68 PSI @ 3500RPM.=20 HOBBS=3D 3.8 Hrs. time to dump the break in oil and filter. I have a drum o= f Mobile DELVAC 1240 40W oil for Detroit Diesel 2 strokes, I think it would= be safe in a rotary (both are ported engines) I mix 2 cycle oil in the gas, about 75:1 for now. My EAA chapter has member photo pages, and the web master recently cleaned = up the spam, so I'm posting progress pic again. http://gallery.eaa326.org/main.php?g2_itemId=3D1727 Scott ----------MB_8CE04E6E0AF4F31_1E48_9F2A2_webmail-m002.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii"
Just a few tec= hnical questions to Tracy and  the group:
I have an EC2-A1T #274 upgrade 02-15-09
with EM2-B2 #166
While running today, I noticed that the address table would switch bac= k and forth between #31 and 41, 42,& 43.
I checked the Mixture Correction Table Address Assignments (Pg 33 in t= he manual), and figured that was the jump off point to the 2500- to
3800 RPM part of the table.
So I ran the engine some more, and noticed that even lower RPMs with a= ddresses in the 20's would jump up to 41, 42, 43, some times 44.
Then drop back to the original value (+-). Am I getting speed referenc= e noise? The engine runs well, and smoothly, except when it jumps to
the 40's. During previous runs, Auto tune richened these up, and I smo= othed it with the MAP table screen while shut down. That's another issue wh= ich I can handle.
Anyway, my injector wires are a few inches separate from the ignition = wires to the coils. I have an RV-8, and the EC2 unit is mounted in the
right fwd baggage well. The  wires pass forward thru the firewall= separately.
Also, I think I noticed some time delay or dead band when rising or dr= opping thru the 2500 RPM threshold. The Address number doesn't
change instantly with the RPM. Is that 'as intended'?
I ran briefly above 3800 RPM with no problems or changes required to t= he mixture control. So I don't have any obvious problems up there yet. The = staging point occurs @ address 53, and is noticed as a small increase = in power, but no change in mixture reading.
Exhaust temps are close, about 5 degrees difference @ 1500 F.
I started this run with a 'Test Card' to run in MAP table screen in Tr= ack Mode, and then move to Mode 8 Ignition timing.
This was good. I re-read the manual a lot before this run, it paid off= . I ran the engine about 3000 RPM, and moved the timing to both limits a fe= w times while observing the RPM and adjusting the mixture. I settled on the= highest RPM, which is only 1 degree retarded from the baseline, using Trac= y's initial installation instructions for installing the Crank Angle Sensor= .
I have a Turbo engine, with opened rotor cooling= jets and a restrictor in the oil fitting on the turbo. I get low oil press= ure at 1500 RPM about 24 PSI using 5W-30 oil, about 68 PSI @ 3500RPM.
HOBBS=3D 3.8 Hrs. time to dump the break in oil = and filter. I have a drum of Mobile DELVAC 1240 40W oil for Detroit Di= esel 2 strokes, I think it would be safe in a rotary (both are ported engin= es)
I mix 2 cycle oil in the gas, about 75:1 for now= .
My EAA chapter has member photo pages, and the w= eb master recently cleaned up the spam, so I'm posting progress pic again.<= /div>
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