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Yes Harry you are probably right. I just wrote this out of memory and I will find out the actual weight of one square foot 0.020 aluminum and put that into calculation - also rivets. 40 pounds more than a ragwing is just way too much in my eys. I think they come even - ragwing or metal wing. Hartmut [EMAIL PROTECTED] wrote: > > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > Harmute, > > I think you will find the STC (SA319WA) calls for 0.20 inch thick aluminum..I > think all STC for metalizing also call for 0.020" aluminum. > > In the Specification A-718, page 5, and A-787, page 12 : under Misc...*601 - > "Metal plating of wings per Tech instruction report 103000 by Birtchcraft > Engrg. Co., 11836 Cherry Ave., Inglewood, CA." Weight increase > ......"32 lbs. at +36 arm." > > I too have heard ~ 40 pounds.......( Other approved STC metalizing say use > actual weight increase...) > > Harry Francis > Blacksburg, VA. > ================================================================== > TO UNSUBSCRIBE go to: http://ercoupers.com/lists.htm ================================================================== TO UNSUBSCRIBE go to: http://ercoupers.com/lists.htm
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