Gang, if you want to totally avoid any of these issues go with alum. It was a little over a year ago I documented a construction technique for KR builders. Although the documentation is of wing tanks, it is easily adapted for a header tank. Mark Langford posted my word.doc file somewhere, maybe someone can chime in with the location. With Mark Jones supplying the money and me the alum work, we used the exercise as a means to provide KR builders a very doable alternative in consideration of the varying additives in fuels today. Mark Jones now has the project tanks in his wings. It is a very, very easy process using solid head pop rivets, thus no bucking, and provides a non degradeable tank that will last a lifetime. I provided a list of required rivets, supplies, fittings, tubing. If you use this method I would encourage you not to "roll your own" and follow the instructions for a tried and true method.
Dana Overall 1999 & 2000 National KR Gathering host Richmond, KY i39 RV-7 slider, Imron black, "Black Magic" Finish kit 13B Rotary. Hangar flying my Dynon. http://rvflying.tripod.com/aero1.jpg http://rvflying.tripod.com/aero3.jpg http://rvflying.tripod.com/blackrudder.jpg do not archive
