Simson SR2

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Samson
Simson SR 2 built in 1959 hammerschlagblau.jpg
Simson SR2 from 1959 (original condition + new tires)
SR2 / SR2E
Manufacturer VEB vehicle and equipment factory Simson Suhl
Production period 1957 to 1964
class moped
Motor data
Single-cylinder two-stroke - gasoline engine
Displacement  (cm³) 47.6
Power  (kW / PS ) 1.1-1.3 kW at 5000 rpm
Top speed (  km / h) 45
transmission 2-speed manual transmission
drive Chain
Empty weight  (kg) 54-55
Previous model Simson SR1
successor Samson Sparrow
At that time (here around 1960) the SR2 was often ridden in a skirt and without a helmet.
Simson SR2E from 1961 (completely restored)

The SR2 (“SR” means “Simson-Rheinmetall”) is the successor to the first small motorcycle SR1 manufactured by Simson in Suhl (Thuringia). It was presented for the first time at the Leipzig Spring Fair in 1957 and, together with the modified SR2E model, with over 900,000 vehicles produced, was extremely popular in the GDR .

SR2

The SR2 had a single - cylinder two-stroke engine with flat pistons , a flywheel magneto with 15/18 W, whereby the light coil delivered a voltage of 6 V and an output of 18 W and a Bilux headlight with 15 W (15/15 W) and 6 Volt supplied. The SR2 is - like its predecessor - a moped , which means that the engine is started by pressing the pedals. In contrast to its predecessor, the SR1, the engine of the SR2 could be started while stationary because, strictly speaking, it had a pedal kick starter . With second gear engaged and the clutch pulled, you could also “cycle”. The carburetor has a "swab" for pressing down the float, which had to be pressed down for a cold start until fuel ran out of the carburetor housing. The tank was enlarged from 4.5 to 6 liters, giving a range of more than 300 km. The SR2 was also in international demand and was even exported to the USA . In addition to the usual maroon and beige, it was also available in blue and burgundy from 1959.

SR2E

The SR2E was a further development of the SR2 and was developed due to the urging of some importers for performance and chassis improvements and was produced from 1960. In the development phase, the "E" stood for export, and since the Berlin party leadership declared the further development of mopeds to be common property due to the intensive efforts of Suhl's management, it could also be sold in the GDR. The further development itself was not too extensive. It essentially concerned an improvement in the suspension. A new short swing arm with coil springs was used on the front wheel . The spring travel increased from 45 mm to 60 mm. The swing arm now ran around the outside of the fender. A central coil spring was installed on the rear wheel.

The revisions in 1962 were more extensive, but they had no effect on the model designation. The front swing arm has been revised again, the spring travel increased again to 72 mm. The front fork was now welded and more robust. The suspension of the saddle has also been improved. The engine output was increased to 1.8 HP by increasing the compression and changing the valve timing, which benefited above all the acceleration performance. Further improvements concerned center stands, luggage racks and more. Overall, the specialist literature was tempted to state that " the moped is increasingly losing the character of a short-distance means of transport and is now ideally suited for longer overland trips (vacation trips). " A little later, some changes were made in detail, including reinforced wheel axles, a new one Speedometer drive and a modified rear light with a significantly enlarged light exit disc.

The SR2E was mature and robust, but international development had long gone in the direction of motorcycle-like, two-seater small motorcycles with footrests and 3 or 4-speed footshifts and significantly more engine power. To take this into account, Simson introduced a new range of models in 1964 . The Simson Spatz can be seen as the successor to the SR2E .

Engine manufacturer

The engine manufacturer was the VEB Büromaschinenwerk Sömmerda in Thuringia. Before the Second World War, this plant belonged to the Rheinmetall Group and, in addition to office machines, also manufactured various armaments in the last pre-war years. This is why the lettering "Rheinmetall" was still present on the engine housing during the GDR era.

Technical specifications

Parameter Simson SR2 Simson SR2E
engine Rheinmetall two-stroke
starter Pedal kick starter
cooling Airstream
Bore (mm) 38
Stroke (mm) 42
Displacement (cm³) 47.6
compression 7: 1 from 1962 7.5: 1
Power (hp / min) 1.5 / 5000 from 1962 1.8 / 5000
coupling Three-disc oil bath clutch
transmission Two-speed manual transmission
Carburetor BVF central float carburetor NKJ 122-4 BVF central float carburetor NKJ 123-4
spark plug M14-225
Tank capacity (l) 6th
frame Central tube
Tires 23 x 2.25
Brake front / rear Inner jaws
Front suspension Rocker arm with rubber buffers Short swing arm on coil springs
Rear suspension Swing arm with rubber buffers
Dead weight (kg) 54 55
Top speed (km / h) 45 (factory specification)
construction time 1957-1959 1960-1964
number of pieces 390,000 515,000
cylinder 1
fuel Two-stroke mixture 1:33
Consumption per 100 km (l) 1.7
permissible total weight (kg) 145
Seats 1

literature

  • Use test of the moped SR2. In: Motor Vehicle Technology 2/1958, pp. 70–71.
  • Erhard Werner: Simson Oldtimer - A guide for SR1, SR2, SR2E and KR 50. MZA Verlag, ISBN 3-9809481-3-7 .
  • Schrader type chronicle: Simson Schwalbe & Co 1955–1991. Motorbuch Verlag, ISBN 978-3-613-02813-5 .

Web links

Commons : Simson SR 2  - Collection of pictures, videos and audio files

Individual evidence

  1. ↑ KFT 5/1957, p. 178.
  2. ↑ Simson motor vehicles now also to the USA. In: Motor vehicle technology 6/1959, p. 253.
  3. ^ Simson products 1962. In: Motor vehicle technology 3/1962, pp. 118–120.
  4. ^ The small vehicles from Simson Suhl. In: Motor vehicle technology 4/1963, p. 133.