I stopped at Ed Anderson house on Tuesday near Charlotte NC and spent a few hours
talking to Ed and taking pictures of his airplane.

Here is a picture of his two mufflers.

Ed's airplane was not running at the time so I could not get
any noise measurements.

BTW the A weighted noise data for Tracy's airplane is
as follows.

30 feet away 104 Db at 3900 RPM

60 feet away 96 Db during takeoff.

On a high speed fly over I estimated at 300 to 500 feet
84-86 Db.

30 feet away at idle 87 Db.

Unfortunately I did not have time to see Finn's airplane and measure his noise level
as I flew back to CA out of Dulles and not Tampa.

Paul Lamar
 
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