Norton Commando Gearbox Power Flow Diagrams
Download the complete PDF version using the green download button at the top right of this page for a visual Norton Commando gearbox reference showing power flow through the four-speed transmission. This illustrated guide uses color-coded diagrams to explain what is happening inside the gearbox in neutral, first, second, third and fourth gear, making it easier to understand which gears are rotating, which gears are free on their shafts and which gears are transmitting drive.
The diagrams identify the clutch input, output drive, mainshaft, layshaft and individual gear positions from first through fourth. Each page includes a key explaining the color coding for gearwheels rotating at mainshaft speed, gearwheels rotating freely on their shaft, gearwheels and layshaft transmitting torque, and gears receiving torque from the mainshaft through splines.
This resource is especially useful alongside a Commando gearbox rebuild or inspection because it gives a clear visual explanation of the dogged gearwheel positions in each selected gear. The neutral diagram shows no drive on the output, while the remaining diagrams show how torque moves through the gear train as the selector locks the appropriate gearwheel into position.
Contents Include
- Norton Commando gearbox power flow diagrams
- Neutral, first, second, third and fourth gear illustrations
- Mainshaft and layshaft identification
- Clutch input and output drive reference
- Color-coded gearwheel rotation guide
- Gearwheels rotating freely on their shafts
- Gearwheels transmitting torque from the mainshaft
- Splined gearwheel position references
- Dogged gearwheel position in each gear
- Visual aid for understanding Commando gearbox operation
