Norton Commando Workshop Manual

## Technical Data

# A

| Camplate plunger spring
|  | Free length: 1.500 in. (38.1 mm) Spring rate: 21 Ibs./in.
| Selector spindie diameter: 0.3740/0.3735 in. (9.499/9.486 mm)
|  | Selector fork bore: 0.3755/0.3745 in. (8.537/9.525 mm)
| Primary Transmission

Engine sprocket no. of teeth: 26
Primary chain details 92 pitches: .375 in. x .250 in. Triple row
Clutch chainwheel no. of teeth: 57
Clutch pushrod - length: 9.813/9.803 in. (249.250/248.996 mm)
Clutch pushrod - diameter: 0.237/0.232 in. (5.984/5.857 mm)
Clutch operating ball diameter: 1/2 in. (12.70 mm)
Clutch operating body lock ring thread size: 1 5/8 in. x 20 TPI
Clutch type: Multi plate, diaphragm spring
Clutch friction plate no. off: 4
Clutch friction plate thickness: .148/.142 in. (3.759/3.607 mm)
Clutch friction plate material: DON 112

|  | Clutch centre bearing specification: | Deep grove ball bearing - one dot
|  |  |  | OD 62 mm, ID 35 mm, Width 14 mm
|  |  |  | Corner rad 1.5 mm
|  | Clutch adjuster dia. and thread: 1/2 in. x 20 UNF 2A
|  | Clutch adjuster length: 0.904 in. x 0.894 in. (22.962/22.708 mm)

### CAPACITIES

Fastback fuel tank capacity: 34 Imp. galls (15 litres)
L.R. Fastback fuel tank capacity: 4 galls. (18 litres)
Roadster fuel tank capacity: GRP 2 1/4 Imp. galls (10 litres): Steel 2 1/2 Imp. galls (11 litres)
S.S. Hi-rider fuel tank capacity: 2 Imp. galls (9 litres)
Interstate fuel tank capacity: GRP 5 1/4 Imp. galls. (24 litres): Steel 5 1/2 Imp galls. (25 litres)

|  | Interpol fuel tank capacity: | No radio: 4 Imp. galls. (18 litres)
|  |  |  | Radio insert: 3 1/2 Imp. galls. (16 litres)
|  | Oil tank: 5 Imp./6 U.S. pints, 2.8 litres Gearbox: 0.75 Imp./0.9 U.S. pints, 0.42 litres Front forks: 150 cc (5 fl. oz.) each leg Primary chaincase: 200 cc (7 fl. oz.)

### MISCELLANEOUS DATA

|  | Height: | Fastback etc. - 40.75 (103.5 cm)
|  |  | Hi-Rider only- 5O 1/4 in. (127.6 cm)
|  | Length: 87.5 in. (222 cm) Wheelbase: 56.75 in. (144 cm) Total weight (with oil and 1 gal. fuel):
|  |  | Roadster 422 lb. (191.440 Kg) | (Dry): 395.4 lb. (179.3 Kg) |
|  |  | Interstate 436 lb. (197.749 Kg) | (Dry): 410 lb. (186.1 Kg) |
|  | Weight on front tyre (dry): 179.7 lb. (84.37 Kg). (Weights for Roadster and linterstate model similar)

Weight on rear tyre (dry): 215.7 lb. (97.5 Kg)
(For motorcycle equipped with 4.10 in. x 19 in. tyres front and rear)
Ground clearance: 6 in. (15 cm)
Width: 26 in. (66 cm)
Front brake drum diameter: 7.95 in. (20.32 cm)
Rear brake drum diameter: 7 in. (17.78 cm)
Total braking area (front): 18.69 sq. in. (120 sq. cm.)
Total braking area (rear): 13.60 sq. in. (88 sq. cm.) drum brake

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