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Egg had significant cooling issues. Pretty marginal. So he went with the
less efficient npg to reduce flight risk. Good decision, except they never put
any effort into improving cooling. Only recently did they discover that all
their radiators were restricting flow too much. Now are replacing them with much
better results.
They also made progress by adding fins to improve air flow into the
cores.
For unproven cooling install I think npg is good conservative decision.
Just because it greatly reduces risk of boil over. I would never consider it for
my install, as I have robust cooling. FWIW
-al wick
Artificial intelligence in cockpit, Cozy IV powered by stock
Subaru 2.5
N9032U 200+ hours on engine/airframe from Portland, Oregon
Prop
construct, Subaru install, Risk assessment, Glass panel design
info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html
Can anyone confirm whether Eggenfellner
recommends NPG? I know that some of his customers run it, but I can't
tell whether it's factory recommended or not. Just curious.
Rusty
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