Originally Posted by Haggar
It depends on the direction its being loaded in, but in 'normal' orientation, square is stronger than round, for bending.
0.125 wall is overkill for a go kart.
what size would you reccomend? like i said idk much about fabrication or steel for that matter. this kart will eventually be powered by a yamaha warrior 350 engine and have full suspension and i will put it through some hell so i want it to withstand the abuse and not crack the frame. my frame is cracked badly in the front and have had to reweld it 2 times already.