Difference between revisions of "BMW R12"

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|fuel_capacity    = 3.7 Gallon (14.00 Liters)
 
|fuel_capacity    = 3.7 Gallon (14.00 Liters)
 
|oil_capacity    =
 
|oil_capacity    =
|fuel_consumption = 3.40 litres/100 km (29.4 km/l or 69.18 mpg)
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|fuel_consumption = 3.40 liters/100 km (29.4 km/l or 69.18 mpg)
 
|turning_radius  =
 
|turning_radius  =
 
|related          = [[BMW R17]]
 
|related          = [[BMW R17]]
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==History==
 
==History==
 
[[Image:1938-BMW-R12-Army.jpg|right|thumb|1938 BMW R12 Army]]
 
[[Image:1938-BMW-R12-Army.jpg|right|thumb|1938 BMW R12 Army]]
 
The '''R12''' was an air-cooled [[boxer twin]] [[four-stroke]] [[motorcycle]] produced by [[BMW]] from 1935-1942. 
 
  
 
The R12 along with its sister model, the [[BMW R17|R17]] were milestone models in the evolution of [[motorcycling]], being the first production machines to feature a hydraulically dampened [[telescopic front fork]].  This resulted in the R12 being the best selling pre-WWII [[:Category:BMW motorcycles|BMW motorcycle]], with 36,000 units sold from 1935 to 1942, with a great many going into [[:Category:Military motorcycles|military]] service.   
 
The R12 along with its sister model, the [[BMW R17|R17]] were milestone models in the evolution of [[motorcycling]], being the first production machines to feature a hydraulically dampened [[telescopic front fork]].  This resulted in the R12 being the best selling pre-WWII [[:Category:BMW motorcycles|BMW motorcycle]], with 36,000 units sold from 1935 to 1942, with a great many going into [[:Category:Military motorcycles|military]] service.   
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* [https://motopixel.org/pixel/wrzesien-tak-bylo#bmw-r12 Wrzesien - tak bylo...]
 
* [https://motopixel.org/pixel/wrzesien-tak-bylo#bmw-r12 Wrzesien - tak bylo...]
 
* [https://motopixel.org/pixel/tag-der-freiheit-unsere-wehrmacht#bmw-r12 Tag der Freiheit - Unsere Wehrmacht]
 
* [https://motopixel.org/pixel/tag-der-freiheit-unsere-wehrmacht#bmw-r12 Tag der Freiheit - Unsere Wehrmacht]
* [https://motopixel.org/pixel/world-war-ii-in-colour#bmw-r12 World War II in Colour]
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* [https://motopixel.org/pixel/world-war-ii-in-color#bmw-r12 World War II in Colour]
 
* [https://motopixel.org/pixel/la-feldmarescialla#bmw-r12 La feldmarescialla]
 
* [https://motopixel.org/pixel/la-feldmarescialla#bmw-r12 La feldmarescialla]
 
* [https://motopixel.org/pixel/vom-blitzkrieg-zur-barbarei-der-vernichtungsfeldzu#bmw-r12 Vom Blitzkrieg zur Barbarei - Der Vernichtungsfeldzug gegen die Sowjetunion]
 
* [https://motopixel.org/pixel/vom-blitzkrieg-zur-barbarei-der-vernichtungsfeldzu#bmw-r12 Vom Blitzkrieg zur Barbarei - Der Vernichtungsfeldzug gegen die Sowjetunion]
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* [https://motopixel.org/pixel/la-traversee-de-paris#bmw-r12 La traversée de Paris]
 
* [https://motopixel.org/pixel/la-traversee-de-paris#bmw-r12 La traversée de Paris]
 
* [https://motopixel.org/pixel/les-impures#bmw-r12 Les impures]
 
* [https://motopixel.org/pixel/les-impures#bmw-r12 Les impures]
* [https://motopixel.org/pixel/hitler-in-colour#bmw-r12 Hitler in Colour]
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* [https://motopixel.org/pixel/hitler-in-color#bmw-r12 Hitler in Colour]
 
* [https://motopixel.org/pixel/i-leopardi-di-churchill#bmw-r12 I Leopardi di Churchill]
 
* [https://motopixel.org/pixel/i-leopardi-di-churchill#bmw-r12 I Leopardi di Churchill]
 
* [https://motopixel.org/pixel/brdrene-dal-og-professor-drvels-hemmelighet#bmw-r12 Brødrene Dal og professor Drøvels hemmelighet]
 
* [https://motopixel.org/pixel/brdrene-dal-og-professor-drvels-hemmelighet#bmw-r12 Brødrene Dal og professor Drøvels hemmelighet]

Latest revision as of 02:33, 20 June 2019

BMW R12
1939 BMW R12
Manufacturer BMW
Also called R12 Single Carb, R12 Twin carb, R 12
Production 1935 - 1942
Predecessor BMW R11
Class Classic
Engine two cylinder boxer, four-stroke
Bore / Stroke 78.0mm x 78.0mm
Compression ratio 5.2:1
Top speed 68 mph (110 km/h)
Horse Power 17.57 HP (13.1 KW) @ 3400RPM
Ignition type magneto
Battery 5.2:1
Transmission Gear box: 4-speed

Final Drive: shaft

Clutch: dry multiplate-cable operated
Suspension Front: telescopic fork
Rear: rigid-
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 3.5-19
Rear Tire 3.5-19
Wheelbase 54.33 inches (1380 mm)
Dimensions L 82.68 inches (2100 mm)
W 35.43 inches (900 mm)
H 37.01 inches (940 mm)
Weight 407.86 pounds (185.0 Kg) (dry), 185.0 kg (wet)
Fuel capacity 3.7 Gallon (14.00 Liters)
Fuel consumption 3.40 liters/100 km (29.4 km/l or 69.18 mpg)
Related BMW R17
Manuals Service Manual
Tech Specs · Brochures · Reviews · Ads · Videos

The BMW R12 Single Carb was a two cylinder boxer, four-stroke Classic motorcycle produced by BMW between 1935 and 1942. It could reach a top speed of 68 mph (110 km/h). Claimed horsepower was 17.57 HP (13.1 KW) @ 3400 RPM.

History[edit]

1938 BMW R12 Army

The R12 along with its sister model, the R17 were milestone models in the evolution of motorcycling, being the first production machines to feature a hydraulically dampened telescopic front fork. This resulted in the R12 being the best selling pre-WWII BMW motorcycle, with 36,000 units sold from 1935 to 1942, with a great many going into military service.


Engine[edit]

The engine was a air cooled two cylinder boxer, four-stroke. A 78.0mm bore x 78.0mm stroke result in a displacement of just 745.0 cubic centimeters. Fuel was supplied via a standing valves.

Drive[edit]

The bike has a 4-speed transmission. Power was moderated via the dry multiplate-cable operated.

Chassis[edit]

It came with a 3.5-19 front tire and a 3.5-19 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 R12 Single Carb was fitted with a 3.7 Gallon (14.00 Liters) fuel tank. The bike weighed just 407.86 pounds (185.0 Kg). The wheelbase was 54.33 inches (1380 mm) long.

1935 - 1942 BMW R 12[edit]

1935 - 1942 BMW R 12 1935 - 1942 BMW R 12 1935 - 1942 BMW R 12 1935 - 1942 BMW R 12 1935 - 1942 BMW R 12

The 1935 BMW R 12 has, at its heart, an air-cooled, four-stroke, 745cc, twin cylinder powerplant mated to a four-speed manual transmission and can produce a claimed 20 horsepower at 4000 rpm. It also comes with laced wheels, a large, round headlamp, a rear luggage rack, a telescopic front fork, a hard-tail rear suspension with a sprung single saddle, a drum braking system in the front and in the rear, a dual exhaust and a dry, double plate clutch.


In Media[edit]