The fan doesn’t run all the time in the car…does it
freewheel and/or do the bearings give out?
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of George Lendich
Sent: Friday, October 30, 2009
4:22 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Cooling
report
If I remember right the argument was the fan blade being
close to the rad, would restrict flow when not in use, and to
allow the blade to freewheel would kill the fan bearings.
It's obvious that a fan on the ground is quite an advantage.
I always felt that a fan that could swing away, out of the
air flow, would be ideal. However having the room to do that would be
problematic.
I believe Rino said he had a fan on
the oil cooler, which I feel would be restrictive in aviation use, from what
I've heard. Might be good for taxiing etc.
George ( down under)
George;
I added a fan behind the coolant
radiator; and found it had no detrimental effect in flight, and made a big
improvement in cooling on the ground. This is on a pusher (Velocity) with
a ram scoop. I expect it could make a difference depending on what type
of fan and the effectiveness of the intake scoop.
Al G