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BMW R 35

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Make Model

BMW R 35

Year

1937 - 40

Engine

Four stroke, single cylinder vertical, OHV

Capacity

342 cc / 20.9 cu in.
Bore x Stroke 72 x 84 mm
Compression Ratio

6.0:1

Cooling System Air cooled

Induction

1 x SUM type C K 9/22

Ignition

Bosch magneto ignition

Starting

Kick

Clutch Single plate, dry

Max Power

10.4 kW / 14 hp @ 3500 rpm

Transmission 

4 Speed

Final Drive

Shaft
Gear Ratio 1st 3.4 / 2nd 2.18 / 3rd 1.35 / 4th 1.00:1
Frame Pressed steel twin loop frame

Front Suspension

Telescopic fork

Rear Suspension

Rigid, spring loaded saddle

Front Brakes

180mm Drum

Rear Brakes

180mm Drum

Front Tyre

3.0 x 19"

Rear Tyre

3.5 x 19"

Wet-Weight

155 kg / 351 lbs

Fuel Capacity 

12 liters / 3.1 US gal
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Description by BMW Mobile Tradition's Historisches Archiv:

After the R 3 with its 300-cc engine had enjoyed very little commercial success, BMW introduced a new single-cylinder model in 1937, the R 35. Its engine was derived from the 400-cc R 4, but by reducing the bore the displacement was decreased to 350 cc. The R 35 also developed 14 horsepower and like the R 4 had a top speed of 100 km/h. The suspension had in the meantime been modernized. The frame was still made from massive-looking pressed steel sections but the antiquated leaf spring at the front was now replaced by a modern telescopic fork. In contrast to the exclusive “Boxer” models, however, there was no hydraulic damping.

The R 35, which cost almost 1000 Marks, was used in particular by the police and the military authorities both as a training vehicle and for despatches. With over 15,000 sold by 1940, BMW again had a model in its program to match the R 2 and R 4 for turnover.The R 35 was the last model that BMW produced with a pressed steel frame. The “Boxers” and the single-cylinder models now took advantage of the lighter tubular frames.

After the war, the R35 saw something of a renaissance when production was restarted in Eisenach from remaining stock. Over 80,000 of the post-war BMW or EMW (Eisenach Motor Works) R35 and the follow-up R 35-3 model (with rear suspension) were produced by 1955. Some two-thirds of these motorcycles remained in their country of origin and were used in particular for state authorities' fleets. The largest proportion of exports was to the Soviet Union and to the neighbouring Eastern Block countries. Some 5,000 bikes were delivered to Western Europe as a means of generating foreign exchange, but of these only seven remained in West Germany.

If production in Munich and Eisenach is added together, some 100,000 motorcycles were produced between 1937 and 1955. This would make the R35 the most successful model in BMW's motorcycle history.

Source bmwdean.com