Guys, new to the forum. Looking at getting into a shifter. I’m tall and skinny at 6’0″ and 170 lbs. problem is I have long legs and sitting in a CRG road rebel the other day my knees just clear the steering wheel and shifter with pedals all the way forward. I know about the extension, my question is will it dramatically affect the kart? I know weight will increase and shift the balance forward, but is it significant? Or should I just learn to live with the cramped conditions.
I am much the same size and fit perfectly well in the same kart. Are you sure the seat is in the right position. Go to CRG website and check out their set up guide, that will give you the measurements for seat install. Also the pedal can be moved forward on the chassis without the porch extension.
I’m 6’1″, 195lbs with long legs and fit in a CRG Road Rebel. It’s tight, but I have gotten used to it. I actually purchased a front porch extention, but once I installed it and sat in the kart it just did not feel right. My heels were moved higher, because they had to go on top of the front rail, and it moved the bodywork and everything else forward. I ended up getting rid of the front porch. Add around 1.5cm to the dimensions listed in the CRG manual linked above for 125cc classes, and that is right where my seat would end up. My current DR kart the seat is real close to that as well, same amount of legroom. With your weight, I’m guessing you would have to add a few lbs depending on what class you run. That should give you even more flexibility with the seat location.
I’m 5′ 11″ 200 lbs and run an extended porch on my Birel, which I road race. I added the porch after setting a new Tillet 9.5 seat in the kart and putting it tilted as far back as allowed. This cut down my wind resistance significantly, but left me no room for my long legs. The porch has taken a couple of races to get used to the new positioning of my feet, which now ride atop the front frame rail, but I’m now very comfortable in the seat.