TH-414 | Gear Box Model

  Gear box with engine cutaway model is carefully sectioned for training purposes, professionally painted with different colours to better differentiate the various parts, cross-sections, lubricating circuits, fuel system, cooling system etc. Many parts have been chromium-plated and galvanized for a longer life. The gearbox provides a selection of gears for different driving conditions: standing start, climbing a hill, or cruising on level surfaces. The lower the gear, the slower the road wheels turn in relation to the engine speed. The engine drives the input shaft, which drives the lay shaft. The lay shaft rotates the gears on the main shaft, but these rotate freely until they are locked by means of the synchromesh device, which is splined to the shaft.