|
Capacities |
Engine oil tank |
5 imp./ 6 US. Pints |
Primary Chaincase |
200 cc, 7 fl.oz. |
Gearbox |
.75 imp./ .9 US. Pints |
Front Forks |
150 cc, 5 fl.oz. |
Interpol fuel tank |
4 imp. gallons |
Interpol fuel tank (radio) |
3 1/2 imp.gallons |
Interstate fuel tank |
5 1/2 or 5 1/4 gallons |
Hi Rider fuel tank |
2 imp. gallons |
Roadster fuel tank |
2 1/4 or 2 1/2 gallons |
Fastback fuel tank |
3 1/4 or 4 gallons |
Click to return to index |
Carburetor And Air Filter
with Standard Ex. |
Standard 750 (Twin Amal 930
30mm) |
| |
Main Jet |
Needle Jet |
Needle Position |
Throttle Valve |
| 1970 |
220,180, or 210 |
.107 |
Middle |
3 |
| 1971 |
220 |
.106 |
Middle |
3 |
| 1972 |
220 or 210 |
.106 |
Middle/ Top |
3 |
| Standard 850
(Twin Amal 932 32mm) |
Main Jet |
260 |
| Needle Jet |
106 |
| Needle
Position |
Top |
| Throttle Valve |
31/2 |
| Needle |
928/ 107 |
| Choke Tube |
928/ 107 |
| Air Filter |
Pleated
impregnated paper |
| Click to return to index |
Electrical (Lucas) |
General |
Voltage |
12 V Positive earth/
ground |
Alternator |
RM 21 |
Rectifier |
2 DS 506 |
Zener Diode |
Z D 715 |
Battery Rating |
10 Amp Hour at !0 hour rate |
Coil |
17 M6 |
Ballast Resistor |
3 BR |
Contact Breaker |
6 CA or 10CA |
Warning Light Assimilator |
3 AW |
Fuse |
35 Amp. |
Flasher Unit |
8FL |
Bulbs |
Headlight |
12 V 45/40 Watt |
Tail/ Stop light |
12V 21/ 6 Watt Offset |
Parking |
12V 6 Watt Bayonet |
Direction Indicators |
12V 21 Watt |
Warning Lights |
12V 2 Watt |
Click to return to index |
Engine |
| |
750 |
850 |
Capacity |
745cc (45 cu. in.) |
828cc (50.5 cu. in.) |
Bore |
2.875 in. (73mm) |
3.030 in. (77mm) |
Stroke |
3.503 in. (89mm) |
3.503 in. (89mm) |
Max. Torque(5000 rpm) |
48 lb./ft. (Combat 49lb) |
56 lb./ft. |
Compression Ratio |
9:1 (Combat 10:1) |
8.5:1 |
Maximum Speed |
112 MPH (Standard) |
122 MPH |
Spark Plug |
Champion N7Y or
Equivalent. |
Spark Plug Gap |
.023 - .028 in. |
Contact Breaker Gap |
.014 - .016 in. |
Ignition Timing |
28 degrees BTDC (Fully
Advanced) |
Valve Clearances (Cold) |
750 |
850 |
Inlet |
.006 in. (Combat .008) |
.006 in. |
Exhaust |
.008 in. (Combat .010) |
.008 in. |
Camshaft Chain Adj. |
3/16 in. (4.8mm) play at top
of chain. |
Valve Seat Angles |
45 degrees inlet and
exhaust |
Click to return to index |
Primary
Transmission And Rear Chain |
Engine Sprocket |
26 Teeth |
Clutch Housing |
57 Teeth |
Primary Chain |
Triple Row, 92 Pitches,
.375in. x .250in. |
Rear Chain |
99 Pitches, .400in. x .380
in. |
Clutch Pushrod Length |
9.813/ 9.803 in. (244.250/
243.996 mm) |
Clutch Pushrod Diameter |
.237/ .232 in. (6.019/ 5.892
mm) |
Clutch Ball Bearing |
1/2 in. (12.70)
Diameter |
Clutch Plates |
4 fiber clutch, 5 metal
clutch (Sintered Bronze) |
Clutch Adjuster |
1/2 in. x 20 UNF 2A |
Clutch Adjuster Length |
.904 in. x .894 in ( 22.962/
22.708 mm) |
Click to return to index |
Gearbox |
Estimated Speeds Using 19-23 Tooth Gearbox
Sprockets |
| Sprocket
Size |
Overall Gear
Ratio |
6000 rpm |
6500 rpm |
7000 rpm |
| 19 |
4.84 |
92 mph |
99 mph |
107 mph |
| 20 |
4.60 |
97 mph |
105 mph |
113 mph |
| 21 |
4.38 |
102 mph |
110 mph |
119 mph |
| 22 |
4.18 |
106 mph |
115 mph |
121 mph |
| 23 |
3.99 |
112 mph |
121 mph |
130 mph |
( Use a 20 or 21 tooth
sprocket) |
Number Of Teeth On Pinions |
First
Layshaft 28
teeth |
Second Layshaft 24
teeth |
Third
Layshaft 20
teeth |
Fourth
Layshaft 14 teeth |
First
Mainshaft 14
teeth |
Second Mainshaft 18
teeth |
Third
Mainshaft 21 teeth |
Fourth Mainshaft 23
teeth |
Ball Journal Bearings |
Mainshaft (Clutch
End) 11/4 x 21/2 x 5/8
in. |
Mainshaft
(Kickstarter) 5/8 x9/16 x 7/16
in. |
Layshaft
(Clutch)
17mm x 40mm x 12mm |
Click to return to index |
Frame/
Isolastics |
Front Isolastic |
Shim Thickness Available |
.005, .010, .020, .030,
in. |
Free Play |
.010 in. |
Bolt |
7.13 in., 1/2 in. x 20 UNF. |
Buffer Quantity |
2 |
Buffer Diameter |
1 11/16 in. |
Buffer Thickness |
1/2 in. |
Bush Quantity |
2 |
Bush Thickness |
5/8 in. tapered to .510 in. |
Spacer |
2.573/ 2.553 |
Rear Isolastic |
Bolt Torque Setting |
300 in./ lb. |
Shim Thickness Available |
.005, .010, .020, .030, in. |
Free Play |
.010 in. |
Stud |
13 in. |
Stud Thread Size |
1/2 in. x 20 UNF 2A |
Buffer Quantity |
2 |
Buffer Diameter |
1 5/16 in. |
Buffer Thickness |
1/2 in. |
Bush Quantity |
3 |
Bush Thickness |
1/2 in. tapered to .410 in. |
Spacer |
1.560 in./ 1.550 in. |
Dimensions |
Height |
40.75 in. |
Length |
87.5 in. |
Wheelbase |
56.75 in. |
Weight (Roadster) |
420 lb |
Weight (Interstate) |
435 lb. |
Width |
26 in. |
Turning Circle |
17ft.10 in. |
Center of Gravity |
19 3/4 in. |
Seat Height |
33 1/2 in. |
Click to return to index |
Forks/
Shocks |
Forks ( Telescopic with internal Springs
Hydraulically damped) |
Total Fork Travel |
6 in. |
Fork Leg Oil Capacity |
150 cc in each leg |
Springs |
75 1/2 Coils |
|
18.687 in. free length |
|
36.5 lb./ in |
Shocks (Girling Oil filled with External
Springs) |
Spring Free Length |
8.75 in. |
Rate |
126 lb. per in. (depends on
adjustment) |
Fitted Length |
8.4 in. |
Total Length |
13 in. |
Click to return to index |
Brakes
Wheels And Tires |
Front Wheel |
Rim Size |
WM2 - 19 in. |
L.H. Wheel Bearing |
17x40x12 mm. |
R.H. Wheel Bearing |
NM 17721 |
Spindle |
.66671/ 6670 in. |
Tire Size |
4.10 x 19 in. |
Tire Pressure |
26 PSI |
Tire Diameter |
26.46 in. (Dunlop) |
Tire Width |
4 in. |
Front Brake (Disc) |
Pad friction area |
1.65 in. |
Pad Thickness (New with Backing) |
.38/ .37 in. |
Pad Minimum Thickness |
.0625 in. |
Disc Diameter |
10.70 in. |
Disc Width |
.260/ .250 in. |
Brake Fluid |
Lockheed 329 Quality |
Front Brake (Drum) |
Type |
Twin Leading Shoe |
Drum Diameter |
8 in. |
Brake lining area Total |
18.69 Sq. in. |
Rear Wheel |
Rim Size |
WM2 - 19in. |
Wheel Bearings |
17x40x12 mm |
Sprocket Bearing |
NM 177721 |
Tire Size |
4.10x19in. |
Tire Pressure |
26 lbs./PSI |
Tire Diameter |
26.46 in. |
Tire Width |
4 in. |
Rear Brake |
Drum Internal Diameter (New) |
7.007/ 6.997 in. |
Brake lining area Total |
13.6 Sq.in. |
Click to return to index |
Torque
Settings |
3/8 in. Cylinder head nuts &
bolts |
30 ft./lb. |
5/16 in. Cylinder head bolts |
20 ft./lb. |
3/8 in. Cylinder base nuts |
25 ft./lb. |
5/16 in. Cylinder base nuts |
20 ft. /lb. |
Cylinder through bolt (850cc) |
30 ft./lb. |
Con rod nuts |
25 ft./lb. |
Rocker cover plate bolt |
8 ft./lb. |
Crankshaft nuts |
25 ft./lb. |
Cam Chain tensioner nuts |
15 ft./lb. |
Oil Pump stud nuts |
15 ft./lb. |
Rocker feed banjo bolts |
15 ft./lb. |
Engine mount bolts |
25 ft./lb. |
Rotor nut |
80 ft./lb. |
Alternator stud nuts |
15 ft./lb. |
Clutch to Mainshaft nut |
70 ft./lb. |
Mainshaft nut |
40/50 ft./lb. |
Counter shaft sprocket nut |
80 ft./lb. |
Gearbox inner cover nuts |
12 ft./lb. |
Top gearbox fixing bolts |
55 ft./lb. |
Rear shock nuts |
30 ft./lb. |
Isolastic bolts |
25 ft./lb. |
Fork Top nuts |
30 ft./lb. |
Fork Yoke Pinch bolts |
30 ft. /lb. |
Steering head main nut |
30 ft./lb. |
Disk Caliper mounting bolts |
30 ft./lb. |
Disk Caliper end plug |
26 ft./lb. |
Disc Mounting nuts |
20 ft./lb. |
Drum brake cam nuts |
30 ft./lb. |
Sidestand nut |
50 ft./lb. |
Zenor Diode nut |
2 ft./lb. |
Coil bracket nuts |
1 ft./lb. |
Oil pressure release valve |
25 ft./lb. |
Click to return to index |
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