Torque to Weight Ratio Calculator:
Enter the values of torque, T(lbf-ft) and weight, W(lbs) to determine the value of torque to weight ratio, W(lbf-ft/lbs).
Torque to Weight Ratio Formula:
The torque to weight ratio (TWR) is a crucial metric in engineering and automotive applications, representing the relationship between the torque produced by an engine or motor and the weight of the vehicle or system. It provides insight into the performance and efficiency of a vehicle, especially in terms of acceleration and handling. A higher TWR indicates a more powerful vehicle relative to its weight, which often translates to better performance, especially in sports cars and racing applications.
Torque (TQ) is a measure of rotational force applied to an object, typically expressed in units like pound-feet (lbf-ft) or Newton-meters (Nm). It reflects the ability of an engine to perform work, especially when starting from a stop or climbing inclines. On the other hand, weight (W) refers to the gravitational force acting on an object, commonly measured in pounds (lbs) or kilograms (kg).
The torque to weight ratio is calculated by dividing the torque by the weight of the object, expressed as TWR(lbf-ft/(lbs)) = TQ/W. This formula indicates how effectively the engine’s torque can overcome the weight of the vehicle, influencing acceleration capabilities.
The torque to weight ratio, W(lbf-ft/lbs) in pound-force feet per pound is calculated by dividing the torque, T(lbf-ft) in pound-force feet by the weight, W(lbs) in pounds.
Torque to Weight ratio, W(lbf-ft/lbs) = T(lbf-ft) / W(lbs)
W(lbf-ft/lbs) = torque to weight ratio in pound-force feet per pound, lbf-ft/lbs.
T(lbf-ft) = torque in pound-force feet, lbf-ft.
W(lbs) = weight in pounds, lbs.
Torque to Weight Ratio Calculation of Formula:
1.An engine produces a torque of 400 lbf-ft, and the torque to weight ratio is 0.2 lbf-ft/lbs. Calculate the weight of the vehicle (W).
Given: W(lbf-ft/lbs) = 0.2lbf-ft/lbs, T(lbf-ft) = 400lbf-ft.
Torque to Weight ratio, W(lbf-ft/lbs) = T(lbf-ft) / W(lbs)
W(lbs) = T(lbf-ft) / W(lbf-ft/lbs)
W(lbs) = 400 / 0.2
W(lbs) = 2000lbs.
2.A vehicle weighs 2500 lbs, and it has a torque to weight ratio of 0.15 lbf-ft/lbs. Calculate the torque produced by the engine (TQ).
Given: W(lbf-ft/lbs) = 0.15lbf-ft/lbs, W(lbs) = 2500lbs.
Torque to Weight ratio, W(lbf-ft/lbs) = T(lbf-ft) / W(lbs)
T(lbf-ft) = W(lbf-ft/lbs) * W(lbs)
T(lbf-ft) = 2500 * 0.15
T(lbf-ft) = 375lbf-ft.