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Difference between revisions of "BMW R4"
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{{DISPLAYTITLE:{{PAGENAME}}: history, specs, pictures}} | |||
{{Infobox Motorcycle | {{Infobox Motorcycle | ||
|name = '''BMW R 4''' | |name = '''BMW R 4''' | ||
| Line 83: | Line 84: | ||
[[Category:BMW R series]] | [[Category:BMW R series]] | ||
[[Category:1930s motorcycles]] | [[Category:1930s motorcycles]] | ||
{{Infobox Motorcycle | |||
|name = '''BMW R4''' | |||
|image = | |||
|aka = R4 Series 1, R4 Series 2, R4 Series 3, R4 Series 4, R4 Series 5 | |||
|manufacturer = [[BMW]] | |||
|parent_company = | |||
|production = 1932 - 1937 | |||
|model_year = | |||
|predecessor = | |||
|successor = | |||
|class = | |||
|engine = single cylinder, four-stroke | |||
|bore_stroke = 84.0mm x 78.0mm | |||
|compression = | |||
|top_speed = 59 mph (95 km/h) | |||
|power = 13.68 HP (10.2 KW) @ 4000RPM | |||
|torque = | |||
|fuel_system = carburettor. sum ck 3/500 fr | |||
|ignition = battery | |||
|spark_plug = | |||
|battery = 5.7:1 | |||
|transmission = Final Drive: [[shaft drive]] (cardan) <br> | |||
Clutch: dry-single plate-cable operated <br> | |||
|frame = | |||
|suspension =Front: cartridge <br> | |||
Rear: rigid | |||
|brakes =Front: expanding [[brake]] (drum brake) <br>Rear: expanding brake (drum brake) | |||
|front_tire = {{tire|3.50-26.00}} | |||
|rear_tire = {{tire|3.50-26.00}} | |||
|rake_trail = | |||
|wheelbase = 51.3 inches (1303 mm) | |||
|length = 77.95 inches (1980 mm) | |||
|width = 33.46 inches (850 mm) | |||
|height = 37.76 inches (959 mm) | |||
|seat_height = | |||
|dry_weight = | |||
|wet_weight = 137.0 kg | |||
|fuel_capacity = 3.17 Gallon (12.00 Liters) | |||
|oil_capacity = | |||
|fuel_consumption = 3.50 litres/100 km (28.6 km/l or 67.21 mpg) | |||
|turning_radius = | |||
|related = | |||
|competition = | |||
}} | |||
The '''[[BMW]] R4 Series 5''' was a single cylinder, [[four-stroke]] standard produced by [[BMW]] between 1932 and 1937. It could reach a top speed of 59 mph (95 km/h). Claimed [[horsepower]] was 13.68 HP (10.2 KW) @ 4000 RPM. | |||
==Engine== | |||
The engine was a [[air cooled]] single cylinder, four-stroke. A 84.0mm [[bore]] x 78.0mm [[stroke]] result in a [[displacement]] of just 398.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv). | |||
==Drive== | |||
Power was moderated via the dry-single plate-cable operated. | |||
==Chassis== | |||
It came with a 3.50-26.00 front [[tire]] and a 3.50-26.00 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 cartridge while the rear was equipped with a rigid. The R4 Series 5 was fitted with a 3.17 Gallon (12.00 Liters) fuel tank. The wheelbase was 51.3 inches (1303 mm) long. | |||
[[Category:standard motorcycles]] | |||
[[Category:BMW motorcycles]] | |||
[[Category:1930s motorcycles]] | |||
[[Category:Motorcycles needing images]] | |||