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From: <jewen@comporium.net>
Subject: Re: [FlyRotary] Re: Alternator Filter
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Date: Mon, 20 Jul 2009 13:17:54 -0400 (EDT)

Thanks Mark,
Fuel Pressure is remaining constant.  =

Joe

---- Original message ----
>Date: Mon, 20 Jul 2009 09:20:19 -050=
0
>From: Mark Steitle <msteitle@gmail.com>  =

>Subject: [FlyRotary] Re: Alternator Filter  =

>To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
>
>   J=
oe,
>   =A0
>   The first thing to come to mind is that with the
>   =
alternator on-line you have a higher bus voltage
>   which would cause =
the electric fuel pump to run
>   faster and produce more pressure.=A0 =
But the fuel
>   pressure regulator should take care of the higher
>  =
 pressure, assuming it is working properly.=A0 If the
>   fuel pressure=
 does rise when you bring the
>   alternator on-line, then that could c=
ause the engine
>   to go rich and run rough.=A0 Just a thought...
>  =
 =A0
>   Mark S.
>
>   On Mon, Jul 20, 2009 at 8:38 AM,
>   <jewen@c=
omporium.net> wrote:
>
>     Tuning is coming along pretty well on my =
newly
>     running 20B. =A0I have run into a bit of a snag.
>     =A0=
Until last week I was running only on battery
>     power, then I broug=
ht my alternator on line.
>     =A0When the alternator is turned on, th=
e engine
>     starts to stumble and run rough. =A0As soon as the
>   =
  alternator is turned off it starts to run smoothly
>     again. =A0An=
y suggestions for alternator filtering?
>
>     Thanks,
>     Joe
>
>     --
>     Homepage: =A0http://www.flyrotary.com/
>     Archive an=
d UnSub: =A0
>     http://mail.lancaironline.net:81/lists/flyrotary/Lis=
t.html