Hi John, just wondering if you were satisfied that soldering the aluminum made a good high quality permanent seal. I used to watch vendors selling the aluminum rod and welding up aluminum coke cans and such at Oshkosh. The ones I looked at, the aluminum rods caused the repair to be really hard in the welded area. I used to wonder if a failure point exhisted at the edges of the repair. Heavier wall aluminum (as compared to aluminum coke cans) might not matter. I will have to admit that they suckered me into buying a plastic tube filled with the aluminum welding rods that I still have and have never used in a 20 year span ?? : ) I am used to seeing aluminum tig welded, not me actually but my brother who is a certified welder usually is recruited for my aluminum welding needs. Also, there is a guy named Kent White who is at Oshkosh every summer giving aluminum gas welding instruction. If any of you are gas welders you might be interested in looking up Kent and finding out about his techniques. He has shown old films from WW2 where most of the aircraft fuel tanks were gas welded together. When I first watched him gas weld pieces of aluminum edges butted together I was really surprised, I had never heard of that before. I have gas welded steel together and have seen many steel tube fuselages gas welded together but the gas welding aluminum really was interesting. If you are interested in the aluminum gas welding techniques of Kent White copy and paste the link below.
http://www.tinmantech.com/html/kent_white.php Larry H. ________________________________ From: John Gotschall <johng...@comcast.net> To: KRnet <kr...@mylist.net> Sent: Saturday, November 22, 2008 9:44:15 AM Subject: Re: KR>reworking my old KR-2 Has anyone made aluminum tanks in the same size and shape as the original fiberglass method and just foam/glassed into place the aluminum ones? And on that subject, My 20+ year old aluminum tank (forward of the instrument panel) had a pin hole in it that I "soldered" up with "aluminum weld rod" from Weeks. Has anyone constructed an entire tank using this stuff for construction? This stuff sure makes joining aluminum sheet easy since the melting point is around 720 degrees f. The documentation that comes with it indicates it's as strong or stronger than the base metal. I figure if the tank reaches 720 degrees while in use, it's too late to worry about it.. I have years of soldering experience in electronics, but never imagined I'd ever be able to solder aluminum so easily ! jg On Fri, 2008-11-21 at 20:51 -0800, Ronald Wright wrote: > Curiosity here!! Doesn't both of these systems, pvc pipe and vinyl fence > posts, get brittle with cold weather?? With even minor flexing in the wing > structure it seems the possibility of cracking could become a factor. > > I would tend to lean toward using aluminum tubing rather than any plastic of > this type. > > Just my .02 worth. > > Ron _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
