I have been racing and collecting ho scale slot cars since the 1960’s, when i purchased my first aurora model motoring set as a young boy. The pursuit racing chassis from slack karts is a state of the art winning chassis that is available in a flat kart version as well as a champ kart. Simple machines, Gear rack, Catalog The interruption of tractive 4.82. Slot car city gear ratio chart . 4dr sdn 2.0l turbo luxury rwd $51,000. Featuring brands such as slot.it, scalextric, nsr, thunderslot, sideways, cb design, quick slicks and paul gage. Transmission ratio too high a ratio: 1/24 slot car starter kits 1/24 slot car ready to run (rtr) cars 1/24 slot car drag racing 1/24 slot car controllers 1/24 slot car. The pitch circle of a gear is an imaginary circle which passes through the point where the teeth touch when one gear meshes with another. By raising your car’s gear ratio from 2.73 to 3.73, typically you reduce your engine’s fuel consumption since you increase your car’s nor...