>When placing Al tanks (AKA Mark Jones & Dana Overall) how are the tanks >supported relative to the spars? Bonding small Al angle pieces seams >appropriate but is anyone also strapping them in some how???
My aluminum tanks are sitting on two 1" x 1" pieces of aluminum angle that is bolted between the front and rear spars. I placed some 1/8" rubber stripping on the aluminum angle to prevent any possible rubbing or friction between the tanks and the aluminum angle. Once the tanks were seated, I poured two part liquid foam between the tanks and the spars and allowed that area to completely fill. This holds the tanks firmly in place yet allows for any flex in the wing. On the top and bottom of the tanks, I epoxied polyurethane foam in place and then proceeded to shape the airfoil once all the foam was placed in the wing. By doing this you have totally encased the tank in the wing with foam. These tanks now have 250 flight hours with absolutely no leaks or problems. Mark Jones (N886MJ) Stevens Point, WI E-mail: [email protected] Web: www.flykr2s.com
