X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qw-out-2122.google.com ([74.125.92.26] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3684099 for flyrotary@lancaironline.net; Tue, 16 Jun 2009 09:58:07 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.92.26; envelope-from=rwstracy@gmail.com Received: by qw-out-2122.google.com with SMTP id 8so2214927qwh.25 for ; Tue, 16 Jun 2009 06:57:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=q8mbamBchSxF1N+WuyJZR0g/rgasgg1i5nYv0n+sXPc=; b=p+SY45Pp/zEjZ0jpP1yVxhHG2lcgrs84+W2alFafKH9foECedadYgdpYgiyfR8tFhd GTE8MjVS5u0CGR9jQaSZ2E4i8syZ7yesQh9i1DhIGnrPoLNnO492UHVLcsDhui1qNMlM A/KMxGKzZExeDdSgU0D1+t1mUM/L5Vcqw3iZA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=LGBe/Esypeaz4FxfCjHGLNFGnsJlAf4uJv3c74EPbdyVaXWtVSbay2scdNSN6dEAxu fgZ2/OAA/U05JKcTI5Y1TYQd7KmI/D8HGAT0AcssVWVIIpVQhviiyuVJWZEGdh8E7IRz N64uG1McwS20KbH0spk0bE4Fw5Jqsi6qmTHwk= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.224.53.199 with SMTP id n7mr8425660qag.196.1245160650772; Tue, 16 Jun 2009 06:57:30 -0700 (PDT) In-Reply-To: References: Date: Tue, 16 Jun 2009 09:57:30 -0400 X-Google-Sender-Auth: 9f88a737052a815b Message-ID: <1b4b137c0906160657l173c92dbpb557f2f1c1185442@mail.gmail.com> Subject: Re: [FlyRotary] More Wire Separation? From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015175cf82047126c046c778efc --0015175cf82047126c046c778efc Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit In order of priority, here are the wires to keep off to themselves: 1. Coil power wires. 2. Injector power wires 3. Injector driver lines 4. Injector current return lines (pins 19 & 37 on EC2) All these can be together by themselves. Having said that, I have never had any problem with having all the wires together. It is just that in cases where system noise levels are high due to electrical system layout, long battery leads, etc, these are the lines which builders have found that would push things over the limit and cause a problem. This is not a cure-all that is guaranteed to fix all noise problems. Another step that has made the difference between lots of problems and working fine is a noise bypass capacitor from coil power to ground. This should be located near the coils. I don't have a part number because this part normally comes on the engine block (big ground tab under a bolt with a single lead coming from the part. The value is typically .47 uF at 250 volts. An acceptable substitute is one of those old timey point type distributor condensers. Tracy Crook On Tue, Jun 16, 2009 at 3:33 AM, Christopher Barber < CBarber@texasattorney.net> wrote: > OK, I think I got separate wire runs for the needed runs to the EC2. To > recap, from what I recall the injector wires should be segregated in a > bundle as well as the wires to the coils in a separate bundle. I believe > the wires to the Crank Angle Sensor do NOT need to be bundled separately > since they are shielded. > > My question is, when segregating the bundle for the injectors Tracy states > to segregate wires 17, 18, 35, 36 & 19 and 37 from the EC2. For this, does > it just include these wires are should the POWER wires for the injectors > also be segregated? > Also, the one wire that goes from the Rotor One Primary injector to the > EM2/engine monitor, should it be segregated along with the other ones since > int is connected to the injector? > > Finally, as to wires 19 and 37. In Tracy version of the wire diagram it > shows these two ground wires grounded on the airframe. He also states that > these two wires should be as short as possible. However, in the alternate > wire diagram provided in the manual (the one with the coil wire harness that > is in color online), and the diagram that is easier for me to wrap my mind > around, it shows these two wires ground to the engine. To ground to the > engine makes it a pretty long wire run. I cannot ground to the airframe in > a composite. IS IT ACCEPTABLE to ground these two wires to my ground > "forest" (the one from B&C per AeroElectric/Bob Knuckles) on my firewall. > This would allow for these two wires to be quite short....from about four > feet to about 10 inches. > > Thanks for your patience guys. Doing this stuff now is much easier on the > third or forth attempt .....I gotta do something while waiting for my new > "Minstral type" injectors to arrive > > All the best, > > Chris > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --0015175cf82047126c046c778efc Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable In order of priority, here are the wires to keep off to themselves:

= 1.=A0 Coil power wires.
2.=A0 Injector power wires
3.=A0 Injector dri= ver lines
4.=A0 Injector current return lines=A0 (pins 19 & 37 on EC= 2)
All these can be together by themselves.

Having said that, I have never had any problem with having all the wire= s together.=A0 It is just that in cases where system noise levels are high = due to electrical system layout, long battery leads, etc,=A0 these are the = lines which builders have found that would push things over the limit and c= ause a problem.=A0 This is not a cure-all that is guaranteed to fix all noi= se problems.

Another step that has made the difference between lots of problems and = working fine is a noise bypass capacitor from coil power to ground.=A0 This= should be located near the coils.=A0 I don't have a part number becaus= e this part normally comes on the engine block (big ground tab under a bolt= with a single lead coming from the part.=A0 The value is typically .47 uF = at 250 volts.=A0 An acceptable substitute is one of those old timey point t= ype distributor condensers.

Tracy Crook





On Tue, J= un 16, 2009 at 3:33 AM, Christopher Barber <CBarber@texasattorney.net>= wrote:
OK, I think I got= separate wire runs for the needed runs to the EC2. =A0To recap, from what = I recall the injector wires should be segregated in a bundle as well as the= wires to the coils in a separate bundle. =A0I believe the wires to the Cra= nk Angle Sensor do NOT need to be bundled separately since they are shielde= d.

My question is, when segregating the bundle for the injectors Tracy states = to segregate wires 17, 18, 35, 36 & 19 and 37 from the EC2. =A0For this= , does it just include these wires are should the POWER wires for the injec= tors also be segregated?
Also, the one wire that goes from the Rotor One Primary injector to the EM2= /engine monitor, should it be segregated along with the other ones since in= t is connected to the injector?

Finally, as to wires 19 and 37. =A0In Tracy version of the wire diagram it = shows these two ground wires grounded on the airframe. =A0He also states th= at these two wires should be as short as possible. =A0However, in the alter= nate wire diagram provided in the manual (the one with the coil wire harnes= s that is in color online), and the diagram that is easier for me to wrap m= y mind around, it shows these two wires ground to the engine. =A0To ground = to the engine makes it a pretty long wire run. =A0I cannot ground to the ai= rframe in a composite. =A0IS IT ACCEPTABLE to ground these two wires to my = ground "forest" (the one from B&C per AeroElectric/Bob Knuckl= es) on my firewall. =A0This would allow for these two wires to be quite sho= rt....from about four feet to about 10 inches.

Thanks for your patience guys. =A0Doing this stuff now is much easier on th= e third or forth attempt <g>.....I gotta do something while waiting f= or my new "Minstral type" injectors to arrive <g>

All the best,

Chris

--
Homepage: =A0http:/= /www.flyrotary.com/
Archive and UnSub: =A0 http://mail.lancaironline.net:81/lists= /flyrotary/List.html

--0015175cf82047126c046c778efc--