Here's a lot of reading on this subject > http://motorbicycling.com/f6/oversiz...lved-6427.html
Let us know what you come up with. On the subject of welders; if you're in the market give serious consideration to a wire feed (mig) welder. It will do everything you'll ever want to do on a bicycle, and more.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"