by Coldman » Tue Mar 28, 2017 9:22 pm
Circles, cylinders and spheres are really interesting shapes and objects for many reasons.
Geometrically it can be shown they have the greatest surface areas and volumes per unit radius and surface area which means less material for same area or volume.
Engineering wise they have consistent distance from centrum to extremity (because its round) making load calculations easier from forces coming from any direction around the diameter compared to a square shape which has varying distance from centrum to extremity.
A tumbling roll cage can be impacted from any direction and multiple directions and each has to be allowed for in strength calculations, much easier to do with a round section. Also I suspect the round tube frame will be lighter than a square tube frame with the same strength.
Flat out like a lizard drinkin'