Simson SL1

Simson SL1 S with front suspension

Simson SL1 S with front suspension

The Simson SL 1 is a moped of Simson with a 1.2 kW paid single-speed motor.

history

In the Federal Republic of Germany , at the end of the 1960s, 25 km / h mopeds (motorized bicycles) established themselves as a new vehicle category that was very popular with the population. Similar to the emergence of the "small motorcycles" (open 50s), Simson wanted to meet the new trend with a corresponding vehicle - the SL 1 moped Vehicle to be completed. In the following, the expected sales success did not occur. In the spring of 1971, production was already being carried out on stockpiling and sales stagnated. The management was aware of the conceptual problems of this first moped and already presented plans for an improved successor called the SL 2. Instead, after 60,200 copies, the economic strategists decided to stop production on March 31, 1972. It is noteworthy that - in contrast to what was common at the time - hardly any standardized components were used for the SL 1 moped. The engine was installed in lawnmowers until the end of the GDR. In 1990 there was again talk of a Simson SL 2 moped. It was a moped from Solo from Sindelfingen, the production of which was relocated to Suhl and was to be sold as "Simson SL 2". Series production in Suhl was announced for 1991, but this did not occur.

properties

The moped was intended to appeal to those for whom the bird series was too expensive or too complicated. Because of the EVP of 550 Marks, it was calculated hard from the start and only the bare essentials were attached, such as a rigid front fork, which was originally supposed to be cushioned, but was then left out for cost reasons. The sprung variant was then available as the SL 1 S moped from mid-December 1970 with state approval. Despite being extremely economical, the engineers were unable to meet the price target, which is why the SL 1 went into stores for 695 marks. Initially, narrower tires (20x2.00) should be installed, which, however, were not approved by the DAMW due to (alleged) overloading . In the end, balloon tires measuring 20x2.25 were used. The 50 cm³ motor M 51A, cooled by the wind from the wind, could accelerate up to a top speed of 30 km / h and was equipped with a centrifugal clutch . You could also pedal while driving with the engine, and there was a second chain drive on the right side of the vehicle. The gear ratio was, however, unfavorably designed so that continuous driving without engine power was out of the question.

The moped should appeal to drivers for whom a moped already required too much technical understanding and driving skills. In practice, however, the SL 1 was not easier to operate (especially when starting up), and technically immature details caused problems. Added to this was the poor ride comfort and the spartan exterior. It was particularly disadvantageous that the SL1 moped did not differ from the fast mopeds in terms of insurance and driving license issues.

Legal issues

During the GDR era, the Simson SL1 was counted as a moped in the group of "bicycles with auxiliary engines". The only legal difference compared to other mopeds was that there was no obligation to register with the VP and from 1977 no ABE was required. But there was both liability insurance and driver's license. According to the unification agreement , bicycles with an auxiliary motor are also recognized in the FRG as bicycles with an auxiliary motor in the sense of the previous GDR regulations. The corresponding § 18 of the StVZO was deleted in 2007. Since then, an operating permit has to be submitted for the Simson SL1. This can be requested from the Federal Motor Transport Authority.

Technical specifications

Parameter	Moped SL1	Moped SL 1S
engine	Simson two-stroke
starter	Pedal drive
cooling	Airstream
Bore (mm)	40
Stroke (mm)	39.5
Displacement (cm³)	49.9
compression	8: 1
Power (hp / min)	1.6 / 4000
transmission	1-speed, automatic
Carburetor	BVF 11 N1-1
Tank capacity (l)	3.2
frame	Box support frame
Tires	20x2.25
Brake front / rear	drum
Front wheel guide	rigid fork	Short swing arm on coil springs
Rear wheel guide	rigid suspension
Dead weight (kg)	38.5	40
Top speed (km / h)	30th
construction time	1970-1971	1971-1972
number of pieces	60 200
Torque (Nm)	3.2
cylinder	1
fuel	Mixture 1:33
Consumption per 100 km (l)	1.6-1.8
Seats	1

literature

• Schrader type chronicle: Simson Schwalbe & Co 1955–1991. Motorbuch Verlag, ISBN 978-3-613-02813-5 .

Web links

• The SL 1 / SL 1S moped
• The SL 1 moped (Russian)

Individual evidence

1. ↑ KFT motor vehicle technology issue 9/1990, p. 17.
2. ↑ I drive a moped 3rd edition 1976, p. 16
3. ↑ Unification Agreement Annex I Chapter XI B III Annex I Chapter XI Subject B - Road Traffic Section III 2. Paragraph 22