Mailing List flyrotary@lancaironline.net Message #61090
From: David Leonard <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: actual current use by a rotary?
Date: Tue, 1 Jul 2014 18:38:47 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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My measurements more or less agree with Charlie's.  The main fuel pump will vary its draw depending upon the back pressure from about 4 amps to more than 10 (guess how I know it goes higher than 10 if the filter gets clogged.... )

Dave Leonard


On Tue, Jul 1, 2014 at 5:19 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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