X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wproxy.gmail.com ([64.233.184.197] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 1030065 for flyrotary@lancaironline.net; Fri, 10 Mar 2006 18:53:15 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.197; envelope-from=russell.duffy@gmail.com Received: by wproxy.gmail.com with SMTP id i22so777563wra for ; Fri, 10 Mar 2006 15:52:31 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:from:to:subject:date:message-id:mime-version:content-type:x-priority:x-msmail-priority:x-mailer:x-mimeole:importance:in-reply-to; b=k27KCu53B2Wl2duAfHMKXPw7JIA7IqY2V9z/1nb7KBLF4Gw2D2iW9KGEiQt0xUSy2QUwjo85bLKfOhnELHITf+/KHdEbioxJTTAeqver8WHfQOAFH6lGZFisrL/0NV1prJ6visI3pVXRhJ2dZZ+PeJHcNDUCuWJik6jwSIYJSew= Received: by 10.54.153.11 with SMTP id a11mr1409263wre; Fri, 10 Mar 2006 15:52:31 -0800 (PST) Return-Path: Received: from rd ( [65.6.194.9]) by mx.gmail.com with ESMTP id 40sm2541116wrl.2006.03.10.15.52.30; Fri, 10 Mar 2006 15:52:30 -0800 (PST) From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Electrical requirements Date: Fri, 10 Mar 2006 17:52:23 -0600 Message-ID: <023b01c6449d$adcd1250$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_023C_01C6446B.6332A250" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_023C_01C6446B.6332A250 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable If someone has posted numbers before, I can't find them. I'm in the process of working up and electrical budget for my airplane. Does anyone have numbers handy for the current draw of the various electrical things the engine needs. =20 Hi Ernest, Below are the notes from when I measured current in the RV-3. "Running" = and "Not Running" refer to the engine, not the items I was testing. This = was with LS-1 coils. =20 Finally pulled out the new DC clamp meter, and made some current measurements. This should be enough numbers to calculate almost = anything. =20 =20 NOT RUNNING: =20 Fuel pump 1- 6.2 amps Fuel pump 2- 6.0 amps Facet transfer pump- 1.1 amps Davies Craig EWP- 4.4 amps EC-2 (also ignition coils)- .3 amps EM-2- .6 amps Master switch only- 6.4 amps (what is all this?) Radio (receive mode)- .7 amps Transponder- .5 amps CD player- .3 amps =20 RUNNING: =20 Minimum config includes FP-1, EWP, EC-2, EM-2, and of course ignition = coils. Alt is turned off because the master is off. 12.1 amps at 1500 rpm, = 14.1 amps at 3000 rpm. That was as much as I dared run standing next to the plane, using the meter on the battery cable in the baggage compartment. = =20 Max load, as I normally fly, includes everything. Alternator is off = though, because I couldn't measure the load at the main battery lead with the = alt supplying power- 22 amps at 1500 rpm. =20 =20 I'm using the Ford 42lb injectors, and the GM D580 coils and my plan is to buy an EC2/EM2 combination. =20 Let me know if you get ready to buy an EC-2/EM-2. I might sell the ones = I have on the Kolb. I've been giving some thought to selling the Kolb, = and moving the single rotor to a gyro, and I would probably just go with a = carb and the standard ignition, along with a basic EIS. No hurry to do any = of that though.=20 Cheers, Rusty=20 ------=_NextPart_000_023C_01C6446B.6332A250 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

If someone has posted numbers before, I can't find = them. =20 I'm in the
process of working up and electrical budget for my = airplane. =20 Does
anyone have numbers handy for the current draw of the various=20 electrical
things the engine needs. 

Hi Ernest,

Below are the notes from when I = measured=20 current in the RV-3.  "Running" and "Not Running" refer to the = engine, not=20 the items I was testing.  This was with LS-1 coils.  =

Finally pulled out the new DC clamp meter, and made some = current=20 measurements.  This should = be enough=20 numbers to calculate almost anything. =20

 

NOT=20 RUNNING:

 

Fuel=20 pump 1- 6.2 amps

Fuel=20 pump 2- 6.0 amps

Facet=20 transfer pump- 1.1 amps

Davies=20 Craig EWP- 4.4 amps

EC-2=20 (also ignition coils)- .3 amps

EM-2-=20 .6 amps

Master=20 switch only- 6.4 amps (what is all this?)

Radio=20 (receive mode)- .7 amps

Transponder-  .5=20 amps

CD=20 player- .3 amps

 

RUNNING:

 

Minimum config includes FP-1, EWP, EC-2, EM-2, and of = course=20 ignition coils.  Alt is = turned off=20 because the master is off.   = 12.1 amps at 1500 rpm, 14.1 amps at 3000 rpm.   That was as much as I = dared run=20 standing next to the plane, using the meter on the battery cable in the = baggage=20 compartment.  =

 

Max load, as I normally fly, includes everything.  Alternator is off though, = because I=20 couldn’t measure the load at the main battery lead with the alt = supplying power-=20 22 amps at 1500 rpm. =20

 

I'm using the Ford 42lb injectors, and the GM
D580 = coils and=20 my plan is to buy an EC2/EM2 combination. 

Let me know if you get ready to = buy an=20 EC-2/EM-2.  I might sell the ones I have on the Kolb.  I've = been=20 giving some thought to selling the Kolb, and moving the single rotor to = a gyro,=20 and I would probably just go with a carb and the standard ignition, = along with a=20 basic EIS.  No hurry to do any of that though.

Cheers,

Rusty =

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