X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 10 [X] Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.25.9.102] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2056258 for flyrotary@lancaironline.net; Mon, 21 May 2007 07:29:52 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-03.southeast.rr.com (8.13.6/8.13.6) with SMTP id l4LBSoAm020944 for ; Mon, 21 May 2007 07:28:51 -0400 (EDT) Message-ID: <000e01c79b9b$75fb7b40$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Fix that Thing! Was Frustration update Date: Mon, 21 May 2007 07:30:39 -0400 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine No answer, Buly. I have no experience with the EM2. However, the two problems you have may or may not be related. I do not see why the EM2 problem would keep the EC2 from sending out the injector simulation pulse train. You are placing the mode switch in mode 1 (with pumps off) and pushing the program control button to simulate the injectors - I mean Mode 8 works for your ignition so I don't see what mode 1 is not working for the injectors (I know, you'd really like to know as well). I personally believe that you have tried about everything (at least once) that I can think of to suggest. The only thing I can think to recommend is that you ( or an electronic friend) need to connect an oscilloscope to the injector triggering pins of your EC2 - if the proper pulse wave form is there then the EC2 is OK (but you already know that isn't the problem because with Bob's installed it doesn't still doesn't work) - then you connect the oscilloscope to the other end of the injector wiring (at the injectors) and see what the injector pulses are indeed there and are of the proper shape. If the pulses are OK at the EC2 end and Not OK at the injector end then it must be the shielded wiring. Here is one more though. If you use a volt ohm meter to measure 12 volts at your injectors there is one more thing that could cause a problem like you are experiencing. If there is a resistance between your 12V power source through your injectors and your EC2, it could permit a small current to flow (sufficient to run a volt ohm meter) without any noticeable drop. However, if your injectors start to fire and draw a bunch of current this resistance could cause enough voltage drop across it that your injectors would not have enough to cause them to function. This might explain also why you can get a click by grounding one injector at a time - sufficient current/voltage to cause one to click, but trying to fire all four injectors many times a second (via the EC2) might create too much load. This is pretty far-out, but given you have tried just about everything plausible, I think you may have to start trying the less plausible. . I mean if Bob's and your EC2 are both functioning and the wiring is connected to the injectors then - either the pulse train is Not getting there (which doesn't seem likely giving your testing) OR the pulse is arriving but distorted to the point it won't open the injectors. Ed ----- Original Message ----- From: "Bulent Aliev" To: "Rotary motors in aircraft" Sent: Sunday, May 20, 2007 2:51 PM Subject: [FlyRotary] Re: Frustration update > Ed, let's assume that was the problem. Why is the blink'n NOP blinking? > Once again couple of years ago it happen and I remember it was something > minor. But finding it, almost ate a month of my time. > Anybody have a good deal on a carburator :) > Buly > > On May 20, 2007, at 12:25 PM, Ed Anderson wrote: > >> Found this chart, Buly. If I interpret it correctly and you have more >> than 30 feet length of shielded cable, it would appear to distort the >> injector pulse sufficient for it to need reshaping. However, I presume >> you don't have more than a few feet - so this may not be the problem - >> it really depends a lot of the capacitance to the particular shield >> cable you used. >> >> Ed >> >> >> >> Justified signal processing >> Waveform Maximum Reshaping >> transmission required >> Sine wave < 5 ft. not required >> TTL Square wave >> (single ended) < 30 ft. > 30 ft. >> TTL Square wave >> (complementary) < 50 ft. > 50 ft. >> TTL Square wave same as TTL complementary >> (open collector) except greater noise immunity >> Line Driver >> (differential) > 50 ft. not required >> Amplified analog >> (complementary) < 30 ft. > 30 ft. >> Pulse < 20 ft. not feasible >> If signal cables are long, the signal can require reshaping to >> ensure its reliability. Assuming quality cable is used, listed here are >> rough breakpoints at which additional processing is required. >> >> ----- Original Message ----- From: "Bulent Aliev" >> >> To: "Rotary motors in aircraft" >> Sent: Friday, May 18, 2007 6:32 AM >> Subject: [FlyRotary] Re: Frustration update >> >> >>> My coils are the LS-1 Bob, but the coils tested fine. Just the >>> injectors are dead when the whole thing is plugged? >>> Buly >>> >>> On May 17, 2007, at 11:45 PM, Bob White wrote: >>> >>>> Hi Buly, >>>> >>>> I'm really disappointed. I was hoping it would fire right up. BTY, >>>> do you have LS-1 coils. That's what my unit is programmed for. >>>> >>>> Bob W. >>>> >>>> On Thu, 17 May 2007 21:41:49 -0400 >>>> Bulent Aliev wrote: >>>> >>>>> Today I received Bob White's EC and that helped clear Tracy's update >>>>> from being the problem. Did ring all the pins between the EC plug and >>>>> control panel. Everything checked OK. Did ring all the pins to the >>>>> crank angle sensor. All OK. Checked all ground pins for a 10th time, >>>>> all OK. Headed home in disgust. I'll keep pocking until I stumble on >>>>> something? >>>>> >>>>> >>>>> Buly >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Homepage: http://www.flyrotary.com/ >>>>> Archive and UnSub: http://mail.lancaironline.net:81/lists/ >>>>> flyrotary/List.html >>>> >>>> >>>> -- >>>> N93BD - Rotary Powered BD-4 - http://www.bob-white.com >>>> 3.8 Hours Total Time and holding >>>> Cables for your rotary installation - http://www.roblinphoto.com/ shop/ >>>> >>>> -- >>>> Homepage: http://www.flyrotary.com/ >>>> Archive and UnSub: http://mail.lancaironline.net:81/lists/ >>>> flyrotary/List.html >>> >>> >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: http://mail.lancaironline.net:81/lists/ >>> flyrotary/List.html >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net:81/lists/ >> flyrotary/List.html > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html