BMW R51 (1938-40)

admin — Fri, 07 Apr 2023 05:03:08 +0000

The BMW R51 is a historic motorcycle model produced from 1938 to 1940 by the German manufacturer BMW. This model was an advancement from the previous R5 model and introduced several enhancements. The R51 featured a new telescopic front fork, swinging arm rear suspension, and hydraulic brakes. The engine had a displacement of 494 cc and produced 24 horsepower.

During World War II, the R51 was primarily used by the German military, and production of this model was halted in 1940, as BMW began producing military vehicles instead.

The R51 was also popular among civilian riders and was considered a high-end motorcycle at the time. The motorcycle’s design was unique and stood out with its innovative advancements. The R51 was also known for its reliability and durability, making it a popular choice for long-distance riders.

After the war, production of the R51 resumed, and the motorcycle became a symbol of BMW’s post-war resurgence. The R51 continued to be produced until 1951, when it was replaced by the R51/3 model.

Today, the BMW R51 is recognized as a significant model in the history of motorcycles and has become a collector’s item. Its innovative advancements paved the way for future motorcycle designs, and the endurance of its design is a testament to BMW’s engineering expertise.

Technical specifications:

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Sachs Roadster 650 (2001-04)

admin — Mon, 03 Apr 2023 12:34:57 +0000

The Sachs Roadster 650 was a motorcycle produced from 2001 to 2004. It had a four-stroke single cylinder engine with a capacity of 644cc and a compression ratio of 9.5:1. The bike had a maximum power output of 50hp at 6000rpm and a maximum torque of 56Nm at 6200rpm. It had a 5-speed transmission and a chain final drive. The front suspension was a hydraulic fork with a front wheel travel of 120mm, while the rear suspension was a twin telescopic shock with a rear wheel travel of 120mm. The bike had single disc brakes both at the front, with a 320mm disc, and the rear, with a 220mm disc. It had a seat height of 760mm and a dry weight of 154kg. The fuel capacity was 17.3 litres.

Technical specifications:

Make Model: Sachs Roadster 650

Year: 2001 – 04
Engine: Four stroke, single cylinder
Capacity: 644 cc / 39.3 cu-in
Bore x Stroke: 100 x 82 mm
Cooling System: Oil/air cooled
Compression Ratio: 9.5:1
Induction:
Ignition: Digital
Starting: Electric
Max Power: 50 hp / 36.4 kW @ 6000 rpm
Max Torque: 56 Nm / 41.3 lb-ft @ 6200 rpm
Transmission: 5 Speed
Final Drive: Chain
Front Suspension: Hydraulic fork
Front Wheel Travel: 120 mm / 4.7 in
Rear Suspension: Twin telescopic shock
Rear Wheel Travel: 120 mm / 4.7 in
Front Brakes: Single 320mm disc
Rear Brakes: Single 220mm disc
Front Tyre: 120/70 ZR17
Rear Tyre: 160/60 ZR17
Seat Heright: 760 mm / 30.0 in
Dry Weight: 154 Kg / 339.5 lbs
Fuel Capacity: 17.3 Litres / 4.5 US gal

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BMW R51 Archives - MotorcycleSpecifications.com

BMW R51 (1938-40)

Technical specifications:

Sachs Roadster 650 (2001-04)

Technical specifications: