From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Temperature control.
Date: Fri, 6 Sep 2019 08:49:54 +0800
References: <list-12928575@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-12928575@logan.com>
Message-Id: <8706393F-619E-4573-884B-38D4BE256640@gmail.com>

Thanks Lynn. Great summary.
Mixture was to close to a Lambda of 1 and needed to be either side.
I=E2=80=99ll aim at a EGT of 1650 max in future.

Steve

> On 6 Sep 2019, at 7:40 am, lehanover lehanover@aol.com =
<flyrotary@lancaironline.net> wrote:
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> Try adding fuel to lower EGT. Tops at 1650 degrees would be nice. Once =
in cruise lean past best power to lower EGT.  Leave the throttle wide =
open. 160 to 180 best coolant. 150 to 160 best oil.
> 62 degrees OAT means big problems on a warm day. .
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> Lynn E. Hanover
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> A successful 32 minute Flight #3. I was very pleased.
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> Main change this flight was winding in some prop pitch and extending =
the envelope to 140 KIAS.
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> Configuration of flight was:
> OAT was a low 62F
> Coolant Inlet - 21in2
> Oil Inlet - 8in2
> Total Outlet - 80in2
> Coolant peeked at 226F
> Oil peeked at 218F
> EGT peeked at 1724F
> Fuel Flow peaked at 18.7 GPH (Flowscan - not sure how accurate from =
the provided data)
> We are still keeping immediately above the airfield
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> Reflections:
>     Idle RPM to low
>     Temps are to high on climb out but maybe OK when we get her up to =
her cruise of 190 KIAS
>     I will investigate water spray cooling for the initial climb. Does =
anyone have experience/data?
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> Here is a graph of the data.
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> Cheers
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> Steve Izett
> Perth Western Australia
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