Hey Ed: I was the one who weighed a fabric covered wing and a metal covered wing. I had a pair of metal covered wings in the hangar as well as a freshly covered set of fabric wings. As you reported, the difference was 20 pounds between them. I did not remove the metal covering on the wing to determine its thickness, nor did I have the STC in front of me stating the material to be used. As far as I recall, the fabric wings had just been recovered using the Poly Fiber process. Lynn Nelsen In a message dated 3/12/2010 12:34:21 P.M. Eastern Standard Time, [email protected] writes:
I've long quoted the 40 pound difference between fabric covered and metal covered wings. That was the "old wisdom" I'd learned from old writings. One day, during one of these discussions, a member went to his hangar and weighed a metalized wing and a non-metalized wing which I presume had its fabric covering on it. He reported about a 20 pound difference for the one wing. I can't guarantee that the "fabric" wing had all its fabric, coatings and paint on it but he didn't say it was stripped as I recall. Hartmut has been quoting the 40 pound difference between a pair of wings with regular metalized coating versus stripped wings, then saying the stripped wings will need to take into account the weight of fabric, dope and paint. He may be right - I've not weighed any wings, myself. It'd be nice to get new definitive weighings of wings. > Sorry that I addressed this to you. Apparently > that is now a faux pas but you did ask > the question. I hope I did not hurt your feeling > with my answer. If my answer is incorrect all are > to feel free to call me a dumbXXX. Sorry if I didn't make that clear, Kevin. There's no ban against addressing a person in a facts-only or positive manner. What is strongly discouraged are comments that disparage the person or their ideas. On that theme, we'd rather he didn't call you a dumXXX. :-) Your response to Don, for example, is an excellent example of helping others in a positive manner. However, when we disagree with someone's facts or ideas, it's best just to discuss those facts and ideas. Thanks, everyone for helping keep this forum a positive experience. Ed ------------------------------------ Yahoo! Groups Links
