Paul,
Just to chime in here, we were just last
week discussing the importance of minimizing the pressure behind the radiator.
By dumping air into the cowl, you have reduced the airflow across the radiator
core. Ducting the engine intake air directly into the TB will reduce the
pressure behind the radiator and should improve cooling.
Mark S.
(been reading chapter 12…learned
enough to be dangerous)
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Paul
Sent: Sunday, April 10, 2005 7:24
PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: SQ2000
flying again
Hi, Rusty....yes, the air is dumped directly into the
cowling in the vicinity of the throttle body. I reduced the throttle to 4900
rpm's, and temps did not come down in the climb. Prior to installing the ram
air scoop, my temps would actually drop during a climb at 4900 rpm's, so I
believe the ram air scoop to be the culprit. I have a NACA duct and some
3 inch tubing on the way. I am going to build an airtight plenum over the
throttlebody and the NACA duct/sceet tubing will deliver fresh air to the throttlebody
ONLY and not dump it into the low pressure area of the cowling, thus inhibiting
my cooling. I guess that's why they call it experimental.
Paul Conner