I understand that the ERCO factory did not add corrosion protection because they expected the airplanes not to be used longer than ten years. Aluminum lasts long beyond that time frame as we can see. Also Alclad 2024 provides a good portion of protection due to the pure aluminum layer on the outside.
Hartmut From: charles washburn Sent: Wednesday, May 26, 2010 8:43 PM To: [email protected] Subject: [ercoupe-tech] spar caps I have a 1946 415 c and have noticed that the spar caps in the wings are zinc chromated. Does anyone know if this would have been done at the factory or likely when the wings were metalized? The original logs are gone. Thanks Charlie Washburn -------------------------------------------------------------------------------- The New Busy is not the too busy. Combine all your e-mail accounts with Hotmail. Get busy.
