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