Hi there. I am running a direct drive kart on a 3/8 mile track with 7 turns. The gearing on my kart is 10/93. And this kart will spin the tires coming out of the hairpin. It has plenty of power. Its all about the driver on a direct drive kart. Direct drives love a lot of fuel so you have to constantly keep adjusting the carb to give it some more. If you are a newbie clutch will be a lot easier to drive. But direct drive will be faster even with more weight.