BMW R23

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BMW R23

Developed from the single-cylinder BMW R20 of 1937/38, itself a development of BMW's best-selling R2, the R23 was produced between 1938 and 1940, 8,021 examples being sold. Powered by an overhead-valve engine producing 10bhp, the BMW R23 came with a four-speed gearbox and featured shaft drive like the larger models. Weight with a full tank of fuel was 297lbs and the top speed around 60mph (97km/h). This R23 was completed on 22nd December 1939 and delivered to Nibbrig & Greeve in the Netherlands on 23rd July 1940, two months after the Dutch had surrendered to the invading German forces!

R23.jpg
BMW R23
Manufacturer
BMW
Also called R 23
Production 1938 - 1940
Class Classic
Engine
single cylinder, four-stroke
Bore / Stroke 68.0mm x 68.0mm
Compression ratio 6.75:1
Top Speed 59 mph (95 km/h)
Horsepower 9.79 HP (7.3 KW) @ 5400RPM
Ignition battery
Transmission Gear box: 3-speed

Final Drive: shaft drive (cardan)

Clutch: single plate dry
Suspension Front: telescopic fork
Rear: rigid
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 2.99-19
Rear Tire 2.99-19
Wheelbase 52.36 inches (1330 mm)
Length 78.74 inches (2000 mm)
Width 31.5 inches (800 mm)
Height 35.43 inches (900 mm)
Weight 135.0 kg (wet)
Fuel Capacity 2.54 Gallon (9.60 Liters)
Manuals Service Manual


The BMW R23 was a single cylinder, four-stroke Classic motorcycle produced by BMW between 1938 and 1940. It could reach a top speed of 59 mph (95 km/h). Claimed horsepower was 9.79 HP (7.3 KW) @ 5400 RPM.

Engine[edit]

The engine was a air cooled single cylinder, four-stroke. A 68.0mm bore x 68.0mm stroke result in a displacement of just 247.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv).

Drive[edit]

The bike has a 3-speed transmission. Power was moderated via the single plate dry.

Chassis[edit]

It came with a 2.99-19 front tire and a 2.99-19 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The front suspension was a telescopic fork while the rear was equipped with a rigid. The R23 was fitted with a 2.54 Gallon (9.60 Liters) fuel tank. The wheelbase was 52.36 inches (1330 mm) long.

1938 - 1940 BMW R 23[edit]

1938 - 1940 BMW R 23 1938 - 1940 BMW R 23

The 1938 BMW R 23 has, at its heart, an air-cooled, four-stroke, 247cc, single cylinder lump mated to a three-speed manual transmission that can produce a claimed 12 horsepower at 5600 rpm. It comes with laced wheels, a sprung seat, a suspension package with a telescopic fork in the front and a hard-tail rear unit, full-coverage fenders, a large headlamp, wide handlebars, and a rear luggage rack.


In Media[edit]