In manual transmissions, which components are always in mesh with each other?

In manual transmissions, which components are always in mesh with each other?

• A. The input gear and the countergear
• B. The countergear and the output gears
• C. The output gears and the main shaft gears
• D. The input gear and the output gears

Answer: (B)

Power is transmitted through a fixed gear train in a manual transmission, with a countershaft carrying gears that mesh with gears on both the input side and the output side. The key idea is that the gear pair linking the countershaft to the output shaft stays in continuous contact, forming the constant path that carries torque to the output regardless of which forward gear is selected. The input gear does mesh with a gear on the countershaft as part of the overall train, but the relationship that remains engaged to deliver power to the output shaft in every gear is the meshing between the countergear and the output gears.

Power is transmitted through a fixed gear train in a manual transmission, with a countershaft carrying gears that mesh with gears on both the input side and the output side. The key idea is that the gear pair linking the countershaft to the output shaft stays in continuous contact, forming the constant path that carries torque to the output regardless of which forward gear is selected. The input gear does mesh with a gear on the countershaft as part of the overall train, but the relationship that remains engaged to deliver power to the output shaft in every gear is the meshing between the countergear and the output gears.