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Jim, I think your assumption that the Univair metalization weighs no more than fabric is unfounded. We know people mess up on paperwork. We DON'T know how to make metal as light-weight as fabric (unless you make the metal as thin as foil). For 20 years many of us quoted the "received" wisdom from the old books that metal wings weigh 40 lb. more than fabric. When it was questioned, a member of the list went to his hangar and weighed two wings, metal and fabric and we came up with 38+ lb. difference. I don't think yours can be significantly different. I've NEVER heard a claim that Univair was using titanium metalization to keep the weight down. :-) You might want to update your weight and balance to be sure it's right. Then you'll know how heavy you're flying. Though I did fly my Coupe over gross occasionally, I did it knowingly and with extra care and allowances. Ed Burkhead http://edburkhead.com/ [EMAIL PROTECTED] -----Original Message----- From: Jim Phelps [mailto:[EMAIL PROTECTED] Sent: Sunday, November 10, 2002 11:51 PM To: [EMAIL PROTECTED] Subject: Re: [COUPERS-FLYIN] RE: [COUPERS-TECH] fabric wings Ed my 46 coupe 2749H had the wings metalized by univar sometime in the sixty's and researching my log books their never was a wt. & bal. recalalition. Never was their a change in wt. put in the books. All I can assume is that univairs covering (all flush rivets and yes it has the concave on the bottom)than weighted no more than fabric. My Dad had a fabric covered coupe and it was faster, but it was faster than this coupe(we flew together and shared the same hanger) when it was fabric covered. As coupes differ in performance it's hard to tell which is better, unless you had a fabric covered one and replaced it with metal and knew that particular plane changed, by than it's too late as your bucks have been spent. Having said this, I would agree if you had fabric stick with fabric. The new fabric's are so superior to the old fabric's ----- Original Message ----- From: Ed Burkhead <mailto:[EMAIL PROTECTED]> To: Scott <mailto:[EMAIL PROTECTED]> Hanson ; Coupe-List <mailto:[email protected]> Sent: Sunday, November 10, 2002 9:58 AM Subject: [COUPERS-FLYIN] RE: [COUPERS-TECH] fabric wings ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- Scott, I'll be first, this time, to urge you to stay with fabric. Reasons: 1. Metalized wings weigh about 40 lb. more than fabric. (38+ by actual measurement of a pair of wings on a previous time this subject came up. Because of this, you have: a. about 40 lb. lower useful load b. a bit slower speed due to increased gross weight at the same payload. 2. A disproportionate amount of the corrosion found in Coupe wings has been in metalized wings. Consensus in previous discussions is that metal does a. NOT protect the load-bearing structure better than fabric and that b. metal skinned wings don't get the complete inspection and repair fabric covered wings get during recovering. It's nice that fabric gets removed every 20 years or so and EVERYTHING inside gets repaired before recovering. 3. Some metalizations are done incompetently. Coupe wings have a slight concavity on the bottom of the wing just behind the leading edge. This concavity is important to the good behavior of the Coupe in slow flight. If you are looking at previously metalized wings, be SURE they have that concavity. If you contemplate metalizing your own wings, be sure the concavity is maintained. 4. A good fabric job gives a good smooth finish to the wing. I was asked 20 or more times if my wings were metalized when they were fabric covered. Summary: fabric covered Coupe wings are superior to metal covered wings. Ed Burkhead http://edburkhead.com/ [EMAIL PROTECTED] -----Original Message----- From: Scott Hanson [mailto:[EMAIL PROTECTED] Sent: Sunday, November 10, 2002 10:08 AM To: [email protected] Subject: [COUPERS-TECH] fabric wings ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- Does anyone know if there is an FAA approved procedure to change a fabric wing on a 46' to metal? _____ Do you Yahoo!? U2 on <http://rd.yahoo.com/launch/mailsig/*http://launch.yahoo.com/u2> LAUNCH - Exclusive medley & videos from Greatest Hits CD ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm ========================== To leave this forum go to: http://ercoupers.com/lists.htm ========================== To leave this forum go to: http://ercoupers.com/lists.htm
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