Specifications & FeaturesCourtesy of Royal Enfield and Watsonian Squire
Description: Constant mesh gearbox
Gear shifting pattern: 1 down & 4 up.
1 < N > 2 > 3 > 4 > 5 < 4 < 3 < 2 < N
Primary ratio: 2.24:1
Lubricant oil: 450 ml. Of EP 90 gear oil.
Gear ratio comparision:
| 5-speed | |
| Top gear | 1:1 |
| 4th gear | 1.212:1 |
| 3rd gear | 1.522:1 |
| 2nd gear | 2.013:1 |
| 1st gear | 3.063:1 |
|
| 4-speed | |
| 1:1 | Top gear |
| 1.364:1 | 3rd gear |
| 1.842:1 | 2nd gear |
| 2.778:1 | 1st gear |
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5-speed
Cam plate/selector fork/index pawl mechanism for gear change.
4-speed
Ratchet/selector fork/plunger mechanism for gear change.
Results
Provides smoother operation and positive lock.
|
5-speed
Carrier plate inside the gearbox casing and end cover.
4-speed
End cover butted with gearbox casing and end cap.
Results
Assembly is simpler.
5-speed
Fully splined shafts/gears.
4-speed
Stub tooth shafts/gears.
Results
Provides better torque carrying capacity and less lash.
5-speed
Use of needle roller bearings in kickstart shaft, lay shaft, sleeve gear.
4-speed
Use of bushes in kickstart shaft and lay shaft.
Results
Improves reliability and ensures smooth running.
5-speed
Innovative three ball clutch operating mechanism mounted with end cover.
4-speed
Lever type clutch operating mechanism mounted with end cap.
Results
Improves efficiency and provides smoother operation of clutch.
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