REFLECTOR: SPAM-LOW: Cooling Question

[Thomas Mann via Reflector]

So for those that responded …..

The current configuration seems to have a history of providing sufficient cooling.


If I scale my NACA scoops such that it has the same size opening (i.e. same area in square inches), would that be sufficient?

By my estimation, this configuration should be more efficient. I’ve always been under the impression that you don’t want to alter the direction of flow until the incoming air has been expanded. I can’t see how this could possible be occurring under the current configuration.


Tom Mann



Velocity N951TM (STD/RG)





From: Velocity Reflector
Sent: ‎Sunday‎, ‎January‎ ‎4‎, ‎2015 ‎3‎:‎35‎ ‎PM
To: Velocity Reflector






As I am working on my CF Top Cowl I had a though.

 

Currently my cooling system for the cylinders consists of a pair of scoops (one for each cylinder bank) plumbed from underneath to a plenum for top down cooling. 

What I see in the newer Velocities are the NACA scoops built into the top cowl feeding a cooling plenum. I'm entertaining the thought of converting mine to use a similar manner to catch air from the top rather than deal with snaking a six inch glass tube through an already crowded area.

 

What has the experience been for these top cowl cooling systems? 

Do you sacrifice much in the way of cooling efficiency during climb?

Tom Mann
 Velocity N951TM (STD/RG)
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