Difference between revisions of "BMW R42"
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{{ | {{Motorcycle | ||
|name = BMW R42 | |||
|photo=bmw-r-42-1926-1928-1.jpg | |||
|name = | |||
| | |||
|aka = | |aka = | ||
|manufacturer = | |manufacturer = BMW | ||
|parent_company = | |parent_company = | ||
|production = 1926 - 1928 | |production = 1926 - 1928 | ||
| Line 18: | Line 9: | ||
|predecessor = | |predecessor = | ||
|successor = | |successor = | ||
|class = | |class = Classic | ||
|engine = | |engine = air-cooled, four-stroke, boxer twin cylinder, SV | ||
|bore_stroke = 68. | |bore_stroke = 68.6mm x 68.6mm | ||
|compression = | |compression = 4.9:1 | ||
|top_speed = 59 mph (95 km/h) | |top_speed = 59 mph (95 km/h) | ||
|power = 11.67 HP (8.7 KW) @ 3400RPM | |power = 11.67 HP (8.7 KW) @ 3400RPM | ||
|torque = | |torque = | ||
|fuel_system = carburetor. 20mm | |fuel_system = carburetor. 20mm BMW spezial | ||
|ignition = | |ignition = | ||
|spark_plug = | |spark_plug = | ||
|battery = | |battery = | ||
|transmission = Gear box: 3 | |transmission = Gear box: 3 speed, manual <br> | ||
Final Drive: [[shaft | Final Drive: [[shaft]] <br> | ||
Clutch: dry | Clutch: dry, single plate <br> | ||
|frame = | |frame = | ||
|suspension =Front: | |suspension =Front: plate spring, 5 laminae <br> | ||
Rear: | Rear: hard-tail, sprung seat | ||
|brakes =Front: | |brakes =Front: 150mm drum <br>Rear: external shoe [[brake]] at gearing (on cardan shaft) | ||
|front_tire = {{tire|3.5 | |front_tire = {{tire|27 x 3.5}} | ||
|rear_tire = {{tire|3.5 | |rear_tire = {{tire|27 x 3.5}} | ||
|rake_trail = | |rake_trail = | ||
|wheelbase = 55.51 inches (1410 mm) | |wheelbase = 55.51 inches (1410 mm) | ||
| Line 44: | Line 36: | ||
|width = 31.5 inches (800 mm) | |width = 31.5 inches (800 mm) | ||
|height = 37.4 inches (950 mm) | |height = 37.4 inches (950 mm) | ||
|seat_height = | |seat_height = | ||
|dry_weight = | |dry_weight = | ||
| Line 49: | Line 42: | ||
|fuel_capacity = | |fuel_capacity = | ||
|oil_capacity = | |oil_capacity = | ||
|fuel_consumption = | |fuel_consumption = | ||
|turning_radius = | |turning_radius = | ||
|related = | |related = | ||
|competition = | |competition = | ||
}} | }} | ||
The '''[[BMW]] R 42''' was a air-cooled, four-stroke, boxer twin cylinder, SV Classic [[motorcycle]] produced by [[BMW]] in 1926. Claimed [[horsepower]] was 11.94 HP (8.9 KW) @ 3400 RPM. | |||
The '''[[BMW]] | |||
==Engine== | ==Engine== | ||
A 68.6mm [[bore]] x 68.6mm [[stroke]] result in a [[displacement]] of just 494.0 cubic centimeters. | |||
==Drive== | ==Drive== | ||
The bike has a 3 | The bike has a 3 speed, manual transmission. Power was moderated via the dry, single plate. | ||
==Chassis== | ==Chassis== | ||
It came with a 3.5 | It came with a 27 x 3.5 front [[tire]] and a 27 x 3.5 rear tire. Stopping was achieved via 150mm drum in the front and a external shoe brake at gearing (on cardan shaft) in the rear. The front suspension was a plate spring, 5 laminae while the rear was equipped with a hard-tail, sprung seat. The wheelbase was 55.51 inches (1410 mm) long. | ||
[[Category: | |||
==1926 - 1928 BMW R 42== | |||
<gallery mode='packed-hover'> | |||
File:bmw-r-42-1926-1928-1.jpg|600px|1926 - 1928 BMW R 42 | |||
File:bmw-r-42-1926-1928-0.jpg|600px|1926 - 1928 BMW R 42 | |||
File:1926-BMW-R42.jpg|left|thumb|1926 BMW R42 | |||
</gallery> | |||
The R 42 from the House of Munich had, at its heart, an air-cooled, four-stroke, 494cc, boxer twin cylinder engine mated to a three-speed manual transmission, and could reach a claimed maximum power output of 12 horsepower at 3400 rpm. Standard features included laced wheels, long fenders, a small headlamp, wide handlebars, a plate string front fork, a rigid rear suspension with a sprung seat, a rear luggage rack that could be transformed in a passenger seat, and a front drum brake. | |||
[[Category:Classic motorcycles]] | |||
[[Category:BMW motorcycles]] | [[Category:BMW motorcycles]] | ||
[[Category:1920s motorcycles]] | [[Category:1920s motorcycles]] | ||
Latest revision as of 13:39, 3 June 2020
 |
|
| BMW R42 | |
| Manufacturer | |
|---|---|
| Production | 1926 - 1928 |
| Class | Classic |
| Engine | air-cooled, four-stroke, boxer twin cylinder, SV |
| Bore / Stroke | 68.6mm x 68.6mm |
| Compression ratio | 4.9:1 |
| Top Speed | 59 mph (95 km/h) |
| Horsepower | 11.67 HP (8.7 KW) @ 3400RPM |
| Fuel System | carburetor. 20mm BMW spezial |
| Transmission | Gear box: 3 speed, manual Final Drive: shaft |
| Suspension | Front: plate spring, 5 laminae Rear: hard-tail, sprung seat |
| Brakes | Front: 150mm drum Rear: external shoe brake at gearing (on cardan shaft) |
| Front Tire | 27 x 3.5 |
| Rear Tire | 27 x 3.5 |
| Wheelbase | 55.51 inches (1410 mm) |
| Length | 82.68 inches (2100 mm) |
| Width | 31.5 inches (800 mm) |
| Height | 37.4 inches (950 mm) |
| Weight | 126.0 kg (wet) |
| Manuals | Service Manual |
The BMW R 42 was a air-cooled, four-stroke, boxer twin cylinder, SV Classic motorcycle produced by BMW in 1926. Claimed horsepower was 11.94 HP (8.9 KW) @ 3400 RPM.
Engine[edit | edit source]
A 68.6mm bore x 68.6mm stroke result in a displacement of just 494.0 cubic centimeters.
Drive[edit | edit source]
The bike has a 3 speed, manual transmission. Power was moderated via the dry, single plate.
Chassis[edit | edit source]
It came with a 27 x 3.5 front tire and a 27 x 3.5 rear tire. Stopping was achieved via 150mm drum in the front and a external shoe brake at gearing (on cardan shaft) in the rear. The front suspension was a plate spring, 5 laminae while the rear was equipped with a hard-tail, sprung seat. The wheelbase was 55.51 inches (1410 mm) long.
1926 - 1928 BMW R 42[edit | edit source]
1926 - 1928 BMW R 42
1926 - 1928 BMW R 42
1926 BMW R42
The R 42 from the House of Munich had, at its heart, an air-cooled, four-stroke, 494cc, boxer twin cylinder engine mated to a three-speed manual transmission, and could reach a claimed maximum power output of 12 horsepower at 3400 rpm. Standard features included laced wheels, long fenders, a small headlamp, wide handlebars, a plate string front fork, a rigid rear suspension with a sprung seat, a rear luggage rack that could be transformed in a passenger seat, and a front drum brake.