My Chromoly frame rails measure 33mm. with a 3mm. wall thickness.
Free Go Kart Frames | good place to start - DIY Go Kart Forum
Frame Plans. Could learn from this article when building my own. Must be done!
go kart frame | Frame question - DIY Go Kart Forum
How To Make A Cart | ... these plans show how to make a cool and easy to drive wooden go cart
How To Build A Go Kart Frame! by T. Powers. $1.13. 37 pages. Publisher: WcWelding.com (December 15, 2011)
Planos para go kart.
Go Kart blue prints
Free go kart plans. Download a PDF of the plans to build a two seat go kart from scratch. Shows how to build the frame, paint, and get a go kart parts kit.
how to make a steering for a go kart - Google Search