Mailing List flyrotary@lancaironline.net Message #38964
From: Dale Rogers <dale.r@cox.net>
Subject: Re: [FlyRotary] Re: Alternator drawing current at rest.
Date: Mon, 06 Aug 2007 08:09:04 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Dave,

   If you're going to bring it into the cabin, why not use a shielded wire?
Or, at least bring it in and out on a tightly twisted pair?

Dale R.


David Leonard wrote:
Yep, that was the problem.  I had it wired so that the field windings were active whenever there was power to the system.  I did that to cut down on audio noise, but have decided to bring the field lead back into the cabin so I can control it.  Will add a filter and live with the remaining noise.
 
Dave Leonard

 
On 8/5/07, Al Gietzen <ALVentures@cox.net> wrote:

Subject: [FlyRotary] Alternator drawing current at rest.

 

That current draw for the coils did seem high, so I checked further into it.  Turns out it is the alternator drawing the 3 amps, not the coils.  It gets warm to the touch.  Is that normal?

 

Dave Leonard

Sounds about right.  I measured the field winding draw at about 2.5 A, engine off.

 

Al

 




--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

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