BMW R 23

BMW R 23 Date 1938 - 1940

Number sold 8.021

Price 750,- RM

Engine

internal designation 223/1
engine type four-stroke two-cylinder flat-twin
Bore/stroke 68 x 68 mm
Cubic capacity 247 cm3
Max power 10 PS at 5400 U /min
Compression ratio 6,0 : 1
Valves per cylinder ohv
Carburation system 1 push-in-carburettor Amal M 74/435 S
Engine lubrication forced-feed lubrication
oil pump gear pump

 
Power transmission

Clutch single discs, dry
Number of gears 3
shifting foot shifting
Gear ratios 4,55 / 2,58 / 1,64
Rear wheel ratio 1 : 4,18
Bevel/crown wheel 11/ 46 teeth

 
Electrical system

Alternator Bosch 6V / 75 Watt
Ignition battery ignition
Spark plugs Bosch DM 175 T 1 or Beru K 175 b

 
Suspension

designation 220/1
Type of frame twin-loop frame, bolted
Front suspension telescopic fork
Rear suspension rigid
wheel rims 2,5 x 19 deep-bed
Tyres front 3 x 19
Tyres rear 3 x 19
Brakes front drum brake 160 mm
Brakes rear drum brake 180 mm

 
Dimensions and weights

Length x width x height 2000 x 800 x 920 mm
Wheel base 1330 mm
Tank capacity 9,6 l
Unladen weight, full tank 135 kg
permitted loading 200 kg
Fuel consumption ca. 2,75 l / 100 km
oil consumption ca. 1 - 2 l / 1000 km
Top speed 95 km/h