B50SS, T & MX SPECIFICATIONS, PRICE & IMAGES

Bike Features

Make Model:
BSA B50SS, B50T, B50 MX

Year:
1971 – 73

Production:
5700 units

Engine:
Four stroke, single cylinder, OHV, 2 valve

Capacity:
499 cc / 30.5 cub in.

Bore x Stroke:
84 x 90 mm

Carburettors:

B50 SS & T Amal R930/62
B50
MX (71-72) Amal R932/18, (73) Amal R932/28

Cooling System:
Air cooled

Compression Ratio:
10.0:1

Lubrication:
Wet sump

Engine Oil:
SAE 20W/50

Oil Capacity:
3.4 L / 6 pints / 0.9 US gal

Exhaust:
Single, chrome plated

Ignition :
Lucas RM21

Spark Plug:
Champion N4

Battery:
12V

Starting:
Kick

Max Power:
25 kW / 34 hp @ 6200 rpm

Max Torque:
37.9 Nm / 3.86 kgf-m / 28 ft/lb @ 5000 rpm

Clutch:
Multi-plate, wet, cable operated

Transmission  :
4 Speed

Final Drive:
Chain

Frame:
Welded frame with larger diameter top tube for strength

Front Suspension:
Telescopic forks

Rear Suspension:
Swing arm, 2 shocks wiith dampers

Front Brakes:
8 in. drum, leading shoewith snail cam shoe adjustment

Rear Brakes:
7 in. drum with floating cams

Wheels:
Steel, spokes

Front Tyre:

SS & MX: 3.25 x 18 in.
T: 3.00 x 20
in. Trials

Rear Tyre:

SS & MX: 3.5 x 18 in.
T: 4.00 x 19
in. Trials

Dimensions:
Length: 
2159 mm / 85.0 in.
Width:     
737 mm / 29.0 in.
Height: 
1105 mm / 43.5 in

Wheelbase :
1372 mm / 54 in.

Ground Clearance :

SS & MX: 178 mm / 7 in.
T: 191 mm /
7.5 in.

Seat Height:
813 mm / 32 in.

Dry Weight :
B50SS & MX: 140.6
kg / 310 lbs
B50 T:  
135.0 kg / 298 lbs

Wet Weight:
184 kg / 406 lbs

Fuel Capacity :
UK: 18.2 L /
4.8 US gal
US:  
9.1 L / 2.4 US gal

Standing 0 – 100 km/h / 62 mph:
7.4 sec (B50SS model)

Top Speed:
B50SS: 160
km/h / 99 mph
B50T & MX: 145 km/h /
90 mph