Kart chassis design

[Bradley71]

Some of these chassis designs just rack my brain.it kinda defies logic.it doesnt even make sense why they design a kart thats suppose to be symmetrical that turns left and right to put double rails on one side only.i know its for engine mounting but anytime you add a rail and especially a third bearing you stiffen that side.the way i see it ya have a stiff side and a soft side.hang 175 lbs on rs 2 rails and hang 175 lbs on left side rail.wheres it going to give first and the most.i wonder if its faster right or left?

 

[flattop1]

That chassis has double seat rails , double adjustable stiffeners and the third bearing stiffens the axle .
Granted the left rear frame rail will flex more then the right . Also the engine torque is counter acted by the stiffer corner. Otherwise the engine would flex that corner .