Question 4
The Sketch in Figure 2 represents a three speed sliding mesh gearbox in a neutral position.
Fig. 2
- Identify the parts labelled J, K, L, M and N.
- Calculate he first gear ration.
- Calculate the reverse gear ration.
- List the two types of gear teeth used in a constant mesh gearbox.
Observation
This question attracted very few candidates. The few candidates who attempted it were only able to provide the required response to part (d) of the question.
The required responses to parts (a), (b) and (c) of the question are given below:
(a)
J - Input shaft, clutch, primary, first motion or spigot shaft
K - Constant mesh gear
L - Layshaft or countershaft
M - Reverse idler gear or idler gear
N - Mainshaft, output or third motion shaft
