Start of Production

1956

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End of Production

1960

Numbers Produced

30,236

Price

2,150 DM

Engine

 

Internal Designation

226/1

Motor Type

Four-stroke single cylinder vertical

Bore x Stroke

68 x 68 mm (2.67 x 2.67 in)

Displacement

247 cc

Max Power

15 hp at 6,400 rpm

Compression Ratio

7.5 : 1

Valves

OHV

Carburation System

1 x Bing carburettor type 1/26/46

Engine Lubricating System

Forced feed lubrication

Oil Pump

Gear pump



Power Transmission

 

Clutch

Single plate, dry

Number of Gears

4

Shifting

Foot switching

Gearbox Ratios

5.33 / 3.02 / 2.04 / 1.54

Rear Wheel Ratio

4.16 :1 (with sidecar 5.2 :1)

Bevel/Crownwheel

6 / 25 teeth (with sidecar 5 / 26)



Electrical System

 

Ignition System

Battery ignition

Generator

Noris ZLZ 60/6/1600 1/L

Spark Plugs

Bosch W 240 T1






Chassis

 

Designation

226/1

Frame

Steel twin loop frame, welded

Front wheel suspension

Long swing arm with suspension units and oil pressure dampers

Rear wheel suspension

Long swing arm with suspension units and oil pressure dampers

Wheel rims

2.15B x 18 deep bed rims

Tyres, Front

3.25 x 18

Tyres, Rear

3.25 x 18

Brakes, Front

Drum brake 160 mm / 6.29 in diameter, full width

Brakes, Rear

Drum brake 160 mm / 6.29 in diameter, full width




Dimensions/Weights

 

Length x Width x Height

2090 x 660 x 975 mm (82.28 x 25.98 x 38.38 in)

Wheel Base

975 mm / 38.38 in

Fuel Tank Capacity

15 litres / 3.29 gal / 3.96 gal US

Unladen Weight with Full Tank

158 Kg / 348 lb

Permitted Weight Limit

325 Kg / 715 lb (with sidecar 480Kg / 1057 lb)

Idle/Riding Noise

77/81 phon, from 22/5/1957: 75/78 phon, from 22/12/1958: 81/82 phon

Clearance

105 mm / 4.13 in

Fuel Consumption

Approx. 3.3 litres per 100 Km / 85 mpg / 71 mpg US

Oil Consumption

Approx. 0.5 - 1 litres per 1,000 Km

Top Speed

128 Kph / 79 mph (with original sidecar 90 Kph / 55 mph)

Information kindly supplied by P.Hawksley

www.bmbikes.co.uk