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"Riga-11" (moped): specifications and features

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"Riga-11" (moped): specifications and features
"Riga-11" (moped): specifications and features

Sarkana Zvaigzne, known in Soviet times, is a Riga motorcycle plant specializing in the production of light mopeds. At that time they were one of the best representatives in their category. The eleventh model replaced the seventh series. The only change was the removal of the fuel tank at the rear over the frame, which made it easier to ride downhill. As a power unit, the equipment was equipped with a two-stroke engine with a power of 1.2 horsepower, with a volume of forty-five and a half cubic centimeters. With air cooling of the engine, the device developed a speed of up to fifty kilometers per hour.

riga 11 moped
riga 11 moped

Riga-11: specifications

The following are the main parameters of the moped in question:

  • weight is 45 kilograms with a maximum possible load of 100 kg;
  • length/width/height – 1, 97/0, 75/1, 15 meters;
  • wheelbase - 1,200 millimeters;
  • Design speed limit is forty kilometers per hour;
  • front suspension - telescopic fork with coil springs;
  • similar back piece - rigid type;
  • brake unit - drum type with individual drive for eachwheel;
  • frame type - spinal welded construction.

"Riga-11" - a moped that was produced with a tire size of 2.25 by 19 inches.

soviet moped
soviet moped


Regarding the motor of this vehicle, the following may be noted:

  • two-stroke carburetor engine brand D-6;
  • its displacement is forty-five cubic centimeters;
  • cooling - air with chamber purge (crank device);
  • cylinder size is 38 millimeters;
  • compression ratio - 6, with a piston stroke rate of 4.4 centimeters;
  • maximum efficiency engine produces 1.2 horsepower at four and a half thousand rpm.

Soviet moped is equipped with a single-speed gearbox, dual-plate friction clutch, reaches a torque of up to 29 Nm. The power unit is started by turning the pedals. The ignition unit is a magnetic system. Waste exhaust is discharged through a muffler with baffles for throttling. With a gear ratio of 4.2, the identical chain ratio is 4.1 (the carburetor used is K-34).


"Riga-11" - a moped that had certain improvements compared to previous similar models. The spinal frame consists of a central tube, to which the clamps of the front fork, motor and some other parts are welded. She became stronger and more resilient. The considered Soviet moped becamethe first modification equipped with a spinal type frame.

spare parts for mopeds
spare parts for mopeds

The weakest link in the design of the vehicle was the wheels. However, compared to the seventh variation, they received an increased section and did not deform as quickly when driving on uneven roads with potholes. The design of the wheels itself has remained unchanged.

High handlebar provides a comfortable fit for the driver, fastened with a pair of clamping elements with nuts. This solution allows you to quickly and reliably change its position. The clutch and front brake levers are equipped with ball-shaped tips to protect against injury in case of a fall.

The device of other nodes

Improved saddle device. His box has become more powerful, and the thickness of the pillow has also increased. This decision made it possible to make the driver's seat more comfortable and increase the usable space for storing tools. The seat spring is fixed with new elements, ensuring the reliability of the entire assembly.

The fuel tank, together with the trunk, is located at the rear of the moped, forming an impressive platform that can withstand 15-20 kilograms of cargo. The volume of the fuel tank is four liters. This stock is enough for about two hundred kilometers.

Thanks to its solid power reserve, Riga-11 is a moped that has become popular both among urban residents and in rural areas. The engine remains the same, but the chain is made in a new, stronger and more durable version. Due to the wide tires, the motor was shifted to the right of the symmetricalframe points by seven millimeters. This allowed the front and rear sprocket to be in the same plane.

riga 11 technical specifications
riga 11 technical specifications

Spare parts for mopeds "Riga-11"

Consumable parts for the technique in question are now quite problematic to find. This applies to original spare parts. Analog variations can be really picked up or ordered, as they are simple and unpretentious.

During the serial production of the moped, spare parts were available in sufficient quantities. Many users themselves sorted out the engine and other components, trying to improve or repair them. This is quite within the power of a person who has minimal knowledge about the design of two-wheeled units.

Consumer Reviews

The owners of the equipment in question recall that Riga-11 is a moped that has become a childhood dream come true. Its simplicity and low price, along with modernization, have become the determining factors in the popularity of this transport in cities and villages throughout the country.

Among the pluses in the car, the following is noted:

  • more stable wide wheels;
  • upgraded saddle;
  • strong and practical moped frame.

Now users are more nostalgic for those moments when they could sort out the whole mechanism with their own hands and be proud of it. In modern times, this vehicle serves mainly as a museum piece or a commemorative rarity.

moped frame
moped frame

Closest competitors

Among the mopeds of that time "Riga-11"had not very many competitors in its class. Units from the same manufacturer under indices 7, 12 and 16 were popular. They differed from the eleventh modification in the location of the gas tank, frame structure, wheel width and some engine modifications. Otherwise, the mopeds were almost identical.

Of the other Soviet manufacturers producing competitive equipment, one can note Karpaty and Verkhovyna. It is worth emphasizing that many moped parts were interchangeable, easy to operate, maintain and repair.


Summing up, it can be noted that "Riga-11" is a moped that was successful not only among urban, but also among rural residents. This is due to the wide wheels and decent trunk capacity, which made it possible to transport up to twenty kilograms of cargo on bad roads at a speed of about forty kilometers per hour.

sarkana zvaigzne riga motorcycle plant
sarkana zvaigzne riga motorcycle plant

The vehicle in question was the first two-wheeled light vehicle to be equipped with a backbone-type frame. In addition, the seat, as well as the clutch and brake levers, have been modified to improve safety and comfort.

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