Like our resident @tjkoyen I am hollow boned and weigh about 140lbs. Until I was about 22 I weighed about 120lbs so ballast has always been an issue for me both in the UK and now the USA. I currently race Stock Honda (125 shifter) and LO206 and it’s highlighted starkly for me the seemingly ridiculous weight limits in some classes.
For example. Stock Honda 125 shifter weight limit for the battle of the brickyard this yr is 375lbs. LO206 senior at the local track I race is 365lbs, just 10lbs under shifter, and 206 masters is 385lbs, 10lbs HEAVIER than my shifter! When you think about how much more hardware a shifter kart has on it compared to a 206 (Front brakes, gearbox, liquid cooling system incl radiator, clutch) it boggles my mind where some weight limits are derived from.
My biggest peeve is the argument that massively underweight drivers are at an advantage because they can place the ballast where they want. While this is true to an extent, my 206 is running approx 50lbs of lead and that is a LOT of lead to place, which you cannot distribute all of in the optimal positions.
Luckily I have a Stone kart stand that reduces the effort somewhat as I would be killing my back lifting that thing.
Anyway rant over