BMW R 62

BMW R 62 Date 1928-1929

Number sold 4.377

Price 1.510,- RM

Engine

internal designation M 56
engine type four-stroke two-cylinder flat-twin
Bore/stroke 78 x 78 mm
Cubic capacity 745 cm3
Max power 18 PS at 3400 U /min
Compression ratio 5,5 : 1
Valves per cylinder sv
Carburation system 1 carburettor, Typ BMW Spezial two-valve 22 mm
Engine lubrication forced-feed lubrication
oil pump gear pump

 
Power transmission

 
Clutch single discs, dry - from engine no. 64101: two discs
Number of gears 3
shifting manual
Gear ratios 2,83 / 1,55 / 1,08
Rear wheel ratio 1 : 4,07 (sidecar 1 : 5,18)
Bevel/crown wheel 14 / 57 teeth (sidecar 11 / 57)

 
Electrical system

Alternator magneto generator on request Bosch
Ignition Bosch high-voltage magneto ignition
Spark plugs Bosch W 175

 
Suspension

designation F 56
Type of frame twin-loop steel tubular frame
Front suspension plate spring, 6 laminae
Rear suspension rigid
wheel rims deep-bed 19 x 3
Tyres front 26 x 3,5 low pressure or 26 x 3,25 high pressure
Tyres rear 26 x 3,5 low pressure or 26 x 3,25 high pressure
Brakes front drum brake 200 mm
Brakes rear external shoe brake at gearing (on cardan shaft)

 
Dimensions and weights

Length x width x height 2100 x 800 x 950 mm
Wheel base 1400 mm
Tank capacity 12,5 l
Unladen weight, full tank 155 kg
load rating 210 kg
Fuel consumption ca. 5,0 l / 100 km
oil consumption ca. 1 - 2 l / 1000 km
Top speed 115 km/h