From: "steve Izett" <flyrotary@lancaironline.net>
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Subject: Cooling
Message-Id: <07A9B22E-DF8E-4A9A-9874-3D06E21BA0CF@gmail.com>
Date: Tue, 15 Nov 2016 06:21:04 +0800
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

Hi guys.
The Glasair SIIRG is near completion and we are taxi testing.
The OAT is rising as we enter summer. Yesterday was 37C ~ 100F.
She can idle forever with water stabilising below 220F and oil below =
180F if the OAT is below 70F but not sure yet about the warmer days.
I=E2=80=99m wondering about 3 options and would value your experience =
and thoughts:
1. Route some more air from the left cheek into the water heat exchange =
diffuser currently fed by the right cheek. I am currently only using 50% =
of the left cheek (Blanked off). The other 50% of the left cheek feeds =
air to the engine. The air is likely not to want to do the gymnastics =
required to travel the path available.=20
2. Install another small core fed by the available left cheek air with =
water from the heater outlet. This would make for easy plumping as far =
as the water system. I=E2=80=99m not sure how much heat we could reject =
from that small diameter heater outlet?
3. Install an electric fan on the main exchanger for extended on the =
ground running. Main concern with fan is, what happens when cruising at =
up to 200Knots?=20

Appreciate you feedback

Steve Izett
Glasair SIIRG Genesis 4 port RD1C EC2
Perth Western Australia