X-Virus-Scanned: clean according to Sophos on Logan.com From: "Charlie England" Received: from mail-ig0-f170.google.com ([209.85.213.170] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6963031 for flyrotary@lancaironline.net; Thu, 03 Jul 2014 17:12:29 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.170; envelope-from=ceengland7@gmail.com Received: by mail-ig0-f170.google.com with SMTP id h15so7835088igd.5 for ; Thu, 03 Jul 2014 14:11:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=JpidreM6H35ve2Vtxv6xMYYqw+VdUvw3z7eqyxotyfY=; b=si2oBwgEI4ihe/A8v/NXoM0rSY9Z80LRuwzqINpgG2rA8V2e5yC9fooBbUusnHdMsi R5lDbvMeKR/IGu/AmVolmuP/yE6iszViS4+mXeat9HsAzSLp48qw8Qs5n5O+06p8KFlf MpF/8SzAIGoKO8egj2RNcjrE8+B12ReTfHf8sIKvKclsTMdRX5TYu76Y4p1thhgcuEZZ 0qvVfwytYbcHR8PuXXrriGyG77hRtYqnmSPLCiOA+PmKrCkJ0UBIaNv00MnJ0Op40lSp 3K+ROmeHdd9gflfoUJkZk8GIx+lKOQWGVQgypeRKbq8mSE2vuiC6NTak+gI6ANwwKMG7 2XSg== X-Received: by 10.43.39.137 with SMTP id tm9mr12247764icb.41.1404421913604; Thu, 03 Jul 2014 14:11:53 -0700 (PDT) Return-Path: Received: from ?IPv6:2602:306:25fb:2d49:15dc:fabc:ad05:6419? ([2602:306:25fb:2d49:15dc:fabc:ad05:6419]) by mx.google.com with ESMTPSA id n10sm55886546igv.21.2014.07.03.14.11.51 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 03 Jul 2014 14:11:52 -0700 (PDT) Message-ID: <53B5C73F.3000000@gmail.com> Date: Thu, 03 Jul 2014 16:12:31 -0500 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: actual current use by a rotary? References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------080505010009090606020700" This is a multi-part message in MIME format. --------------080505010009090606020700 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Thanks for the info & the panel pic. Must be nice to have that much panel height. :-) It's looking like the real killer is the fuel pump. If Dave's seen as low as 4 amps, that might mean that a turbine style pump with PWM controller would be worth pursuing. Yet another task to keep me from ever finishing.... Charlie On 7/3/2014 12:53 PM, Mark Steitle wrote: > Charlie, > My 3-rotor, along with typical electrical devices running, needs 36 > amps. This includes EC-2, EM-2, 6 fuel injectors, 6 ignition coils, 1 > fuel pump, EFIS, auto-pilot, NavCom, Xpndr, strobes, and M/T Electric > prop controller. Not sure what it needs just to keep the fan > turning. My guess is that I could probably cut that figure in half by > turning off the xpndr, radio, strobes, EFIS, and trailing coils. (It > would be very interesting trying to fly without the EFIS.) > Thanks, > Mark > > > On Tue, Jul 1, 2014 at 7:19 PM, steve Izett > > wrote: > > Hi Charlie > > I think these are in the ball park but not measured under flying > conditions only idle. > > */_ENGINE_/* > > *EC2 .3* > > *EM3 .5* > > *COILS (D585) 5* > > *INJECTORS (Renesis) 2* > > *FUEL PRESSURE PUMP x 1 8.4* > > *FUEL TRANSFER PUMP x 1 1.6* > > *O2 SENSOR 0.6 * > > *Total Engine 18.4* > > Steve Izett > > On 2 Jul 2014, at 5:08 am, Charlie England > > > wrote: > >> Has anyone with an ammeter installed measured their engine's >> actual current draw (controller, injectors, plugs, fuel pump) >> with everything but the engine shut down, and the alternator >> offline? IIRC, Bernie Kerr once did a battery duration test & >> discontinued after ~40 minutes, but I don't recall seeing any >> actual current measurements. >> >> Thanks, >> >> Charlie > > --------------080505010009090606020700 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit
Thanks for the info & the panel pic. Must be nice to have that much panel height. :-)

It's looking like the real killer is the fuel pump. If Dave's seen as low as 4 amps, that might mean that a turbine style pump with PWM controller would be worth pursuing. Yet another task to keep me from ever finishing....

Charlie

On 7/3/2014 12:53 PM, Mark Steitle wrote:
Charlie,
 
My 3-rotor, along with typical electrical devices running, needs 36 amps.  This includes EC-2, EM-2, 6 fuel injectors, 6 ignition coils, 1 fuel pump, EFIS, auto-pilot, NavCom, Xpndr, strobes, and M/T Electric prop controller.  Not sure what it needs just to keep the fan turning.  My guess is that I could probably cut that figure in half by turning off the xpndr, radio, strobes, EFIS, and trailing coils.  (It would be very interesting trying to fly without the EFIS.)
 
Thanks,
Mark


On Tue, Jul 1, 2014 at 7:19 PM, steve Izett <flyrotary@lancaironline.net> wrote:
Hi Charlie

I think these are in the ball park but not measured under flying conditions only idle.

ENGINE

EC2                                          .3

EM3                                         .5

COILS (D585)                          5

INJECTORS (Renesis)             2

FUEL PRESSURE PUMP  x 1  8.4

FUEL TRANSFER PUMP x 1  1.6

O2 SENSOR                             0.6      

Total Engine                            18.4

Steve Izett

On 2 Jul 2014, at 5:08 am, Charlie England <flyrotary@lancaironline.net> wrote:

Has anyone with an ammeter installed measured their engine's actual current draw (controller, injectors, plugs, fuel pump) with everything but the engine shut down, and the alternator offline? IIRC, Bernie Kerr once did a battery duration test & discontinued after ~40 minutes, but I don't recall seeing any actual current measurements.

Thanks,

Charlie 



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