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Difference between revisions of "BMW R20"
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{{BMW}} | {{BMW}} | ||
[[Category:BMW motorcycles]] | [[Category:BMW motorcycles]] | ||
{{Infobox Motorcycle | |||
|name = '''BMW R20''' | |||
|image = | |||
|aka = R 20 | |||
|manufacturer = [[BMW]] | |||
|parent_company = | |||
|production = 1937 - 1938 | |||
|model_year = | |||
|predecessor = | |||
|successor = | |||
|class = [[Classic]] | |||
|engine = single cylinder, four-stroke | |||
|bore_stroke = 63.0mm x 64.0mm | |||
|compression = 6.0:1 | |||
|top_speed = 59 mph (95 km/h) | |||
|power = 7.91 HP (5.9 KW) @ 5400RPM | |||
|torque = | |||
|ignition = battery | |||
|spark_plug = | |||
|battery = 6.1:1 | |||
|transmission = Gear box: 3-speed <br> | |||
Final Drive: [[shaft]] drive (cardan) <br> | |||
Clutch: dry-multiplate-cable operated <br> | |||
|frame = | |||
|suspension =Front: telescopic fork <br> | |||
Rear: rigid | |||
|brakes =Front: expanding [[brake]] (drum brake) <br>Rear: expanding brake (drum brake) | |||
|front_tire = {{tire|2.99-19}} | |||
|rear_tire = {{tire|2.99-19}} | |||
|rake_trail = | |||
|wheelbase = 52.36 inches (1330 mm) | |||
|length = 78.74 inches (2000 mm) | |||
|width = 31.5 inches (800 mm) | |||
|height = 35.43 inches (900 mm) | |||
|seat_height = | |||
|dry_weight = | |||
|wet_weight = 130.0 kg | |||
|fuel_capacity = 3.17 Gallon (12.00 Liters) | |||
|oil_capacity = | |||
|fuel_consumption = | |||
|turning_radius = | |||
|related = | |||
|competition = | |||
}} | |||
The '''[[BMW]] R20''' was a single cylinder, [[four-stroke]] Classic [[motorcycle]] produced by [[BMW]] between 1937 and 1938. It could reach a top speed of 59 mph (95 km/h). Claimed [[horsepower]] was 7.91 HP (5.9 KW) @ 5400 RPM. | |||
==Engine== | |||
The engine was a [[air cooled]] single cylinder, four-stroke. A 63.0mm [[bore]] x 64.0mm [[stroke]] result in a [[displacement]] of just 192.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv). | |||
==Drive== | |||
The bike has a 3-speed transmission. Power was moderated via the dry-multiplate-cable operated. | |||
==Chassis== | |||
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 R20 was fitted with a 3.17 Gallon (12.00 Liters) fuel tank. The wheelbase was 52.36 inches (1330 mm) long. | |||
==1938 - 1940 BMW R 20== | |||
[[File:bmw-r20-1938-1940-1.jpg|600px|1938 - 1940 BMW R 20]] | |||
[[File:bmw-r20-1938-1940-0.jpg|600px|1938 - 1940 BMW R 20]] | |||
The 1938 BMW R 20 has, at its heart, an air-cooled, four-stroke, 192cc, single cylinder lump paired to a three-speed manual transmission and can reach a maximum power output of 8 horsepower at 5400 rpm. It also comes with laced wheels, a rear luggage rack, a large, round headlamp, a telescopic front fork, a hard-tail rear suspension with a sprung seat, a drum braking system and full fenders. | |||
==In Media== | |||
* [https://motopixel.org/pixel/kardanny-val#bmw-r20 Kardanny Val] | |||
[[Category:Classic motorcycles]] | |||
[[Category:BMW motorcycles]] | |||
[[Category:1930s motorcycles]] | |||
[[Category:Motorcycles needing images]] | |||