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1. 05:17 PM - Re: Sealing Around Engine Baffles (Speedy11@aol.com)
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| Subject: | Re: Sealing Around Engine Baffles |
Matt,
I say horsepucky!
Install your engine baffling. Go fly the airplane. Then spend hours
putting red RTV in every crevasse and fly it again. You will notice there is
no difference in your CHTs or Oil Temp. None.
Now - if your goal is maximum speed, then you will want to pay more
attention to sealing the air cooling flow since it produces 30-40% of your
overall drag. But, if you are trying to maximize speed, there are more important
things to do to reduce cooling drag than filling every tiny opening with
RTV. Making a plenum is more important. Improving the exit air flow is
more important. Optimizing the intake/exit ratio is more important. Once
those are done, then sealing all tiny openings with RTV is the final step.
I flew my RV-8 without RTV sealing the baffling and then sealed it
carefully with RTV. Zero difference in any temperatures. None.
Stan Sutterfield
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