Wayne, It appears You are correct. The Ercoupe Service Memorandum #57, October 11, 1949 states--- para 2 -:" As a result of recent tests and analysis, it has
been determined that the aileron weights on Ercoupes may be removed and the aileron will still maintain freedom from flutter throughout the operational range of the airplane, provided the aileron free play does not exceed 5/16"."-----------------, and Para 5, : "Removal of aileron balance weights is not mandaatory, but is recommended for all Ercoupes Model 415C, 415CD, 415D,E, and G. Thje weight of the parts removed totals 3.5 pounds and their CG is 55.5" behind the Datum line." Note: The Memorandum points out the proceedure for checking free play. The Service Memorandum emphatically points out -----"--- Will still maintain freedom from flutter throughout the operational range of the airplane-------", implying that the ailerons may in fact create flutter if the operational range is exceeded. We all know that we are supposed to, and MUST stay below Red Line - Never Exceed; and that we must also stay below Manuvering speed in rough air, etc, DON'T WE? If control flutter does begin to occur, you may be able to stop it by putting a load on the ailerons by banking, and the elevator by a slight climb; and by immediately reducing airspeed. Short Advice - Don't play test pilot. Fly the airplane - any airplane - within the prescribed airspeed and manuvering limits as proscribed in the flight manual. Fly Safe - Have Fun Regards, Harry 93530 Blacksburg, Va.
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