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Difference between revisions of "BMW R63"
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{{DISPLAYTITLE:{{PAGENAME}}: history, specs, pictures}} | |||
[[Image:R63.jpg|thumb|350px|BMW R63]] | [[Image:R63.jpg|thumb|350px|BMW R63]] | ||
Development of the [[BMW|BMW]] engine proceeded rapidly throughout the 1920s, with the first 750cc models, the [[BMW R62|BMW R62]] and R63, arriving in 1928. A [[side valve]] tourer, the former employed the same [[long-stroke|long-stroke]] (78mm) built-up crankshaft as the new 486cc [[BMW R52|R52]], while the sporting overhead-valve R63 featured a short-stroke (68mm) crank coupled with a 83mm bore. These new engines incorporated a strengthened gearbox featuring a 'side-throw' kickstart, while the cycle parts were upgraded with a larger front brake. Electric lighting was now standard on all BMW models. A spirited performer on the road, the R63 was also raced by the works alongside its 500cc stablemates and, like the latter, pioneered the factory's use of supercharging. Although a relatively modest 75mph maximum was claimed for the stock R63, it was a modified version that provided BMW with the means of securing its first motorcycle land speed record, when Ernst Henne achieved a maximum of 133.8mph on a 'blown' example in 1929. | Development of the [[BMW|BMW]] engine proceeded rapidly throughout the 1920s, with the first 750cc models, the [[BMW R62|BMW R62]] and R63, arriving in 1928. A [[side valve]] tourer, the former employed the same [[long-stroke|long-stroke]] (78mm) built-up crankshaft as the new 486cc [[BMW R52|R52]], while the sporting overhead-valve R63 featured a short-stroke (68mm) crank coupled with a 83mm bore. These new engines incorporated a strengthened gearbox featuring a 'side-throw' kickstart, while the cycle parts were upgraded with a larger front brake. Electric lighting was now standard on all BMW models. A spirited performer on the road, the R63 was also raced by the works alongside its 500cc stablemates and, like the latter, pioneered the factory's use of supercharging. Although a relatively modest 75mph maximum was claimed for the stock R63, it was a modified version that provided BMW with the means of securing its first motorcycle land speed record, when Ernst Henne achieved a maximum of 133.8mph on a 'blown' example in 1929. | ||
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{{BMW}} | {{BMW}} | ||
[[Category:BMW motorcycles]] | [[Category:BMW motorcycles]] | ||
{{Infobox Motorcycle | |||
|name = '''BMW R63''' | |||
|image = | |||
|aka = | |||
|manufacturer = [[BMW]] | |||
|parent_company = | |||
|production = 1928 - 1929 | |||
|model_year = | |||
|predecessor = | |||
|successor = | |||
|class = | |||
|engine = two cylinder boxer, four-stroke | |||
|bore_stroke = 83.0mm x 68.0mm | |||
|compression = | |||
|top_speed = 75 mph (120 km/h) | |||
|power = 23.6 HP (17.6 KW) @ 4000RPM | |||
|torque = | |||
|fuel_system = carburettor. 24mm | |||
|ignition = | |||
|spark_plug = | |||
|battery = 6.2:1 | |||
|transmission = Final Drive: [[shaft drive]] (cardan) <br> | |||
Clutch: dry-single plate-cable operated <br> | |||
|frame = | |||
|suspension =Front: leading link <br> | |||
|brakes =Front: expanding [[brake]] (drum brake). single <br> | |||
|front_tire = {{tire|3.50-26.00}} | |||
|rear_tire = {{tire|3.50-26.00}} | |||
|rake_trail = | |||
|wheelbase = 55.12 inches (1400 mm) | |||
|length = 82.68 inches (2100 mm) | |||
|width = 31.5 inches (800 mm) | |||
|height = 37.4 inches (950 mm) | |||
|seat_height = | |||
|dry_weight = | |||
|wet_weight = 152.0 kg | |||
|fuel_capacity = 3.3 Gallon (12.50 Liters) | |||
|oil_capacity = | |||
|fuel_consumption = | |||
|turning_radius = | |||
|related = | |||
|competition = | |||
}} | |||
The '''[[BMW]] R63''' was a two cylinder boxer, [[four-stroke]] standard produced by [[BMW]] between 1928 and 1929. It could reach a top speed of 75 mph (120 km/h). Claimed [[horsepower]] was 23.6 HP (17.6 KW) @ 4000 RPM. | |||
==Engine== | |||
The engine was a [[air cooled]] two cylinder boxer, four-stroke. A 83.0mm [[bore]] x 68.0mm [[stroke]] result in a [[displacement]] of just 735.0 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. The R63 was fitted with a 3.3 Gallon (12.50 Liters) fuel tank. The wheelbase was 55.12 inches (1400 mm) long. | |||
[[Category:standard motorcycles]] | |||
[[Category:BMW motorcycles]] | |||
[[Category:1920s motorcycles]] | |||
[[Category:Motorcycles needing images]] | |||