Two technicians are discussing how torque is increased inside a manual transmission/transaxle. Technician A says that the gear ratio in first gear between the main shaft and the countershaft should be multiplied by the ratio of the corresponding countershaft gear and output shaft gear. Technician B says that the two ratios should be added together. Which technician is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because in a manual transmission, the overall gear ratio is found by multiplying the gear ratios of the different stages (e.g., from the main shaft to the countershaft and then to the output shaft), not by adding them.

Two Technicians Are Discussing How Torque Is Increased Inside a Manual