Thread: drag racing facts

Tweet

AH ha....Tire and clutch slippage. You forgot to factor that part. I'ts a major part of why a crew chief gets his salary. Management of the clutches to slip enough to roll out and start to get a bite creates a revolution count higher than the theory indicates. Tires never do get a perfect bite throughout the run. Too much slippage, it takes the skins right off quickly. tires only good for a few passes. Too much bite, you either suffer "shake" or internally break the casing down to a point that no more than two runs per pair. The Engines turn on average of 7200 RPM. Fluctuating slighty(if it's a good run) a few hundred RPM. So let's say the geometry that the calculator was count for count. The car could have gears for wheels, the track would have a rack gear laid out to accomodate the wheel gears. Then according to the circumference of the Gear/Wheel it would only take so many revolutions to complete the run according to the gear ratio of the axle. Not everything is on the track as it is on paper. Fun stuff to ponder to figure how to get your car down the track.