Havent been on here for a while so i'll post the pics of my latest project. A 140cc shifter kart. I started with 1 1/4" Steel Tubing with .120 wall thickness and bent it up using a cheap Princess Auto bender (actually designed for pipe) but i used a grinder on the die and it worked allright after filling the tubing with sand.
After bending the main rails, i filled in, using rough measurements off a professional frame but most of it is my own design including the whole front end. its basically finished now except for a few finishing touches yet to do such as to mount the plastic sides properly and hook up the brakes.
Just a few pics to show it... i have more which i might post later if you are interested.