X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=O/h7h11W c=1 sm=1 tr=0 a=yzW1TJDaNRwnwSHGpR/hhQ==:117 a=mufipljMWd53Pz7hSIu+3Q==:17 a=x7bEGLp0ZPQA:10 a=VqmtQeTB-p0A:10 a=JBFolyDoGHsA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=0qqORytXAAAA:8 a=_6GpL_ENAAAA:8 a=7g1VtSJxAAAA:8 a=PX7_dFEAB_b_L92mgKoA:9 a=4cx2UEdOl4Wmss-i:21 a=zncfO7Pk5_eBCc4h:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=wMMUQ-34pajYFvZQ7s0A:9 a=7IavKs43xqjHkG5H:21 a=cc7Q6vHQlmcti_n9:21 a=Kv7-F0VmGS6SlIKA:21 a=_W_S_7VecoQA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=Nj1bhqyGrdl6Az3_ctNx:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "Tracy Crook rwstracy@gmail.com" Received: from mail-pg1-f194.google.com ([209.85.215.194] verified) by logan.com (CommuniGate Pro SMTP 6.2.7) with ESMTPS id 11652818 for flyrotary@lancaironline.net; Mon, 17 Sep 2018 09:34:52 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.194; envelope-from=rwstracy@gmail.com Received: by mail-pg1-f194.google.com with SMTP id 7-v6so7691341pgf.2 for ; Mon, 17 Sep 2018 06:34:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=content-transfer-encoding:from:mime-version:date:subject:message-id :references:in-reply-to:to; bh=W9Dr0OYRrTjxNZU7ddSwAJlzTE3y6A+F2MUs/6R+20s=; b=RwnEIIrpeoyYx5cQZkmFY2v/AeBImNeiVHUNSSKLUV93hkvTeAoeHwIZmJsef+E/N0 0fzu98CCDgJaxrV3RaYS5THd7bTzGOT1nfCVXqgGBgKSAH1w7SIwl/gO8gX22vdfd4dx +N8pjXJXlNhIf4IbkWSfWVP2wCDt9yMDoXXjf9s93jqMOPr93Q90ZezpHXME9WtHk37x W1pZZ+r+QhhvRyFB5uIKPlVFm6vB9aqSIVHua8lcUWDufR89MfF3AYm4vpF5RhTTIlen cwhJXtLFygA2QCEZ6QT5k9EA7m+Q7JTORZII/v+ogFIZSnr1hmpXn/pMcU43cQHgTIFS whCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version:date :subject:message-id:references:in-reply-to:to; bh=W9Dr0OYRrTjxNZU7ddSwAJlzTE3y6A+F2MUs/6R+20s=; b=qpD39W5a2BveqW406BBFcER4qccCzdB0Kwndy8YfJfUzQzNXyjFwf1F1J0yur9/8pT STQBmy14HUTpBU7WyaMiZ6MQH57oZVBVkfal0OQpvrF5MqRLckLxqeADaDSrG95QPA1D GNyaP9GuJhKBprFfa3N5jIy7sG7TyqX0KGqheJTTLi2Wmv7OyYRdaSZWkcjvznzJoXIb gMnbk4XALYqSuwaNvfM4lNj9dR2m2NGcK6Abeb47JbEIzFR6AODmf2ZfDNX5edxU3xjr sE8nmQnpo5ZgvIl8E6IuOzWY/RJQ/I2JYbK1t609LaKCK660hEmE1bGLBnnsRoEYZysf hLeQ== X-Gm-Message-State: APzg51D4Ute8uyZlQVtSXQojV8YhibCbd6wEn2SJ/9Bntzg85RPPFPwD W8PHJtBZBEABIiYQRstTQPAI0tZ7 X-Google-Smtp-Source: ANB0Vdb8ONTH1tkNl6ZDy49TqFjSEQiBxeoc+w7NetCf2tL8HnPafRfc5Rj9tW1ck8/HkRPJGU3zdA== X-Received: by 2002:a63:731b:: with SMTP id o27-v6mr23009339pgc.216.1537191273684; Mon, 17 Sep 2018 06:34:33 -0700 (PDT) Return-Path: Received: from [172.20.10.4] (4.sub-97-43-194.myvzw.com. [97.43.194.4]) by smtp.gmail.com with ESMTPSA id 16-v6sm21544365pfo.164.2018.09.17.06.34.15 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 17 Sep 2018 06:34:32 -0700 (PDT) Content-Type: multipart/alternative; boundary=Apple-Mail-C5B8C77A-B1A3-484D-8686-5A0DF69489A8 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) Date: Mon, 17 Sep 2018 06:42:27 -0600 Subject: Re: [FlyRotary] Re: ignition system Message-Id: References: In-Reply-To: To: Rotary motors in aircraft X-Mailer: iPad Mail (15G77) --Apple-Mail-C5B8C77A-B1A3-484D-8686-5A0DF69489A8 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Totally agree Todd, the Arduino is a fantastic platform to develop engine c= ontrols or avionics on. Just for something to do (and because I=E2=80=99d l= ike to see an EFI solution available to anyone who wants one) I=E2=80=99ve s= tarted porting the EC3 software over to the Arduino. I don=E2=80=99t plan t= o sell them but will give the software to anyone who wants it. The cost to b= uild would be little more than a $35 Arduino board and a chassis to mount it= in. Tracy Crook > On Sep 17, 2018, at 00:54, Todd Bartrim bartrim@gmail.com wrote: >=20 > Hi Neil; > I know it's tempting to cut a corner and use a carb to get flying faster= /cheaper, but I'd really try to stay with EFI. Many advantages. I know you g= et screwed on shipping from across the pond which can make it hard to swallo= w.=20 > Here's a really half-baked, out of the box idea, that you could look into t= hat would save you a lot of money, take up all your remaining time, but give= you a ton of satisfaction. Arduino micro-controllers. I'm just starting to g= et into them while I'm building my own data-logger for my first generation E= M2 and am absolutely amazed at some of the ideas people have used them for. I= t's difficult to stay focused on my current objective and not stray down the= garden path by getting distracted by all the things that can be done with t= hem. Almost anything you can think of, someone has done with an Arduino.=20 > They are an open-source hardware platform so there are many cheap clones a= vailable, with accessory shields for an almost unlimited number of gadgets. T= here are open-source libraries of code available for almost any conceivable p= roject and I know in my browsing that I have seen some for engine ignition/i= njection. > You can even pair up several (or more) micro-controllers for redundancy. T= here are great you-tube tutorials to get you started and I recommend you sta= rt right at the beginning. I know just enough to jump right in, but there we= re enough things to trip me up that I finally went to the beginning and star= ted learning from scratch to fill in the gaps in my knowledge and now this p= roject is beginning to come together. > In most cases you don't need to wright your own code from scratch as you= can find libraries with other users code that you can modify to suit your o= wn needs. It's not as crazy as it might sound and id I didn't already have E= C2 powering my plane, then I would probably attempt to make my own. >=20 > Todd > C-FSTB > 13Bturbo 9.5 hours last week >=20 >=20 > Todd Bartrim >=20 >> On Sun, Sep 16, 2018 at 6:26 PM, Charlie England ceengland7@gmail.com wrote: >>> On 9/16/2018 7:33 PM, Charlie England ceengland7@gmail.com wrote: >>>> On 9/16/2018 4:35 PM, Neil Unger 12348ung@gmail.com wrote: >>>> Gents, >>>>=20 >>>> The cost of an ECU is around the $3000 plus possibly $= 4000 with a few fittings, which is substantial. To simplify things a standa= rd carby with a basic ignition systems would take a lot of money from the pr= oject. What alternatives are there for a simple cheap ignition system to re= place an ECU? >>>>=20 >>>> Neil Unger. >>> Are you willing to change the trigger wheel? You could look at the Mega J= olt (ignition only). It requires a 36-1 wheel, like Ford uses here in the US= A (might be the same down under). >>>=20 >>> If you're interested in alternatives in full injection/ignition controll= ers, the Micro Squirt & Mega Squirt systems can both be set up for a rotary.= Micro Squirt will have batch fired injectors (like almost all aftermarket s= ystems for aviation engines). Mega Squirt can be set up just about any way y= ou can dream up. >>>=20 >>> The Micro Squirt controller with harness is about $400 US. The Mega Squi= rt controller is about $600 US. >>>=20 >>> The car guys love them. Here's a link to an RX-7 forum page on the Mega S= quirt: >>> https://www.rx7club.com/megasquirt-forum-153/ >>>=20 >>> Charlie >> Oops; forgot. Len Hanover has published a method using just a couple of t= rigger detectors and (IIRC) Chrysler ignition modules. Same can be done with= GM HEI modules. Downside is fixed timing. >>=20 >>=20 >> Charlie >>=20 >> --- >> This email has been checked for viruses by Avast antivirus software. >> https://www.avast.com/antivirus >>=20 >>=20 >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/Lis= t.html >=20 --Apple-Mail-C5B8C77A-B1A3-484D-8686-5A0DF69489A8 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Totally agree Todd,  the Arduino is a f= antastic platform to develop engine controls or avionics on.  Just for s= omething to do (and because I=E2=80=99d like to see an EFI solution availabl= e to anyone who wants one) I=E2=80=99ve started porting the EC3 software ove= r to the Arduino.  I don=E2=80=99t plan to sell them but will give the s= oftware to anyone who wants it.  The cost to build would be little more= than a $35 Arduino board and a chassis to mount it in.

T= racy Crook

On Sep 17, 2018, at 00:54, Todd Bartrim bartrim@gmail.com <flyrotary@lancaironline.net> wrote:

Hi Neil;
  I know= it's tempting to cut a corner and use a carb to get flying faster/cheaper, b= ut I'd really try to stay with EFI. Many advantages. I know you get screwed o= n shipping from across the pond which can make it hard to swallow. 
Here's a really half-baked, out of the box idea, that you could look i= nto that would save you a lot of money, take up all your remaining time, but= give you a ton of satisfaction. Arduino micro-controllers. I'm just startin= g to get into them while I'm building my own data-logger for my first genera= tion EM2 and am absolutely amazed at some of the ideas people have used them= for. It's difficult to stay focused on my current objective and not stray d= own the garden path by getting distracted by all the things that can be done= with them. Almost anything you can think of, someone has done with an Ardui= no. 
They are an open-source hardware platform so there are m= any cheap clones available, with accessory shields for an almost unlimited n= umber of gadgets. There are open-source libraries of code available for almo= st any conceivable project and I know in my browsing that I have seen some f= or engine ignition/injection.
You can even pair up several (or mor= e) micro-controllers for redundancy. There are great you-tube tutorials to g= et you started and I recommend you start right at the beginning. I know just= enough to jump right in, but there were enough things to trip me up that I f= inally went to the beginning and started learning from scratch to fill in th= e gaps in my knowledge and now this project is beginning to come together.
  In most cases you don't need to wright your own code from sc= ratch as you can find libraries with other users code that you can modify to= suit your own needs. It's not as crazy as it might sound and id I didn't al= ready have EC2 powering my plane, then I would probably attempt to make my o= wn.

Todd
C-FSTB
13Bturbo  9= .5 hours last week


Todd Bartrim

On Sun, Sep 16, 2018 at 6:26 PM, Charlie Engl= and ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:
On 9/16/2018 7:33 PM, Charlie England ceengland7@gmail.com wrot= e:
On 9/16/2018 4:35 PM, Neil Unger 12348ung@gmail.com wrote:
Gents,

            &nbs= p;     The cost of an ECU is around the $3000 plus possi= bly $4000 with a few fittings, which is substantial.  To simplify thing= s a standard carby with a basic ignition systems would take a lot of money f= rom the project.  What alternatives are there for a simple cheap igniti= on system to replace an ECU?

Neil Unger.
Are you willing to change the trigger wheel? You could look at the Mega Jolt= (ignition only). It requires a 36-1 wheel, like Ford uses here in the USA (= might be the same down under).

If you're interested in alternatives in full injection/ignition controllers,= the Micro Squirt & Mega Squirt systems can both be set up for a rotary.= Micro Squirt will have batch fired injectors (like almost all aftermarket s= ystems for aviation engines). Mega Squirt can be set up just about any way y= ou can dream up.

The Micro Squirt controller with harness is about $400 US. The Mega Squirt c= ontroller is about $600 US.

The car guys love them. Here's a link to an RX-7 forum page on the Mega Squi= rt:
https://www.rx7club.com/megasquirt-forum-153/
Charlie
 Oops; forgot. Len Hanover has published a method using just a couple of trig= ger detectors and (IIRC) Chrysler ignition modules. Same can be done with GM= HEI modules. Downside is fixed timing.


Charlie

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