Oldtimer picture gallery. Motorcycles. BMW-R11.
BMW-R11
Years of production: 1929 - 1935
Overall production: 7500
Engine: 18hp/3400rpm (1929-1935) or 20hp/4000rpm (1934-1935),
2-cyl. 4-stroke aircooled boxer-motor 745cc SV
Bore/Stroke: 78/78 mm
Compression ratio: 5,2 : 1
Dimensions (solo):
length: 2100mm, width: 890mm, height: 950mm, saddle height: ?
Dimensions (gespann, with sidecar):
length: ?mm, width: ?mm, height: ?mm
Wheelbase: 1380mm
Rear track (gespann, sidecar version): ?mm
Road clearance (solo): 130mm
Road clearance (sidecar): ?mm
Carburetter:
SUM (1929-1935, 18hp), or two Amal (1934-1935, 20hp)
Starter: ? Watt
Electrics: 6 Volt, magdino Bosch
Spark plugs: Bosch DM 175 T 1
Clutch: dry twin plate
Gearbox: 3-speed, hand change
Ratios: III - 2,825; II - 1,55; I - 1,08
Cardan
Transmission ratios:
solo - 4,071 (14 : 57), gespann - 4,75 (12 : 57), heer (military) - 5,18 (11 : 57)
Pressed steel frame
Front fork with quarter-elliptic leaf spring
Rear wheel without dampers
Foot brake: lever to rear wheel transmission
Hand brake: cable to front wheel
Turning radius: ?m (left), ?m (right)
Weight (solo): 162 kg
Maximal speed: 120 km/h (solo); 90 km/h (gespann)
Tyres: 3,50x19
Tyre pressures, atm.: front - 1,4 (with sidecar - 1,4); rear - 1,5 (with sidecar - 1,9, for three - 2,3)
Fuel tank capacity: 14 L
Fuel consumption: 3,5 L/100km (solo); ? L/100km (gespann).
Oil capacity in motor carter: 2,5 Ltr.
Water ford depth: ?mm
Frame numbers: 101 ... 9891
Motor numbers (by years):
1929: 60001 ... 63988
1930: 63989 ... 64500
1931: 65001 ... 66946
1932: 67501 ... 68920
1933/34: 69001 ... 70121
1934/35: 70123 ... 73984
Photos are from:
eBay Deutschland.
Archive of Denis Orlov, Moscow automobile historian and journalist.
Thanks for help to Evgenii Pevzner, Moscow motorcycle historian and journalist.
Entrance Gallery Motorcycles BMW Sale Links
Last updated 3 IV 2001. Andrei Bogomolov. Contact Information.
Carburetter:
Foot brake: lever to rear wheel transmission
Fuel consumption: 3,5 L/100km (solo); ? L/100km (gespann).
1932: 67501 ... 68920