REFLECTOR: Uneven Cylinder Cooling

Sun Mar 11 12:02:24 CDT 2012

I'm about 20 hours into the flight testing of my SERG with the dual overhead  NACA cooling plenum on a Lycoming IX-390-X and three bladed MT Prop. 

I have added aluminum deflectors in the runners of the plenum to direct more air to the number 3 & 4 cylinders and made sure that the plenum does not have any air escaping around the outer edges of the cylinders but no luck so far. 

Here are the numbers  getting on the engine:

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Richard 

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