Difference between revisions of "BMW R 42"

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#Redirect [[BMW R42]]
 
{{Infobox Motorcycle
|name            = '''BMW R 42'''
|image            =
|aka              =
|manufacturer    = [[BMW]]
|parent_company  =
|production      = 1926
|model_year      =
|predecessor      =
|successor        =
|class            = [[Classic]]
|engine          = air-cooled, four-stroke, boxer twin cylinder, SV
|bore_stroke      = 68.6mm x 68.6mm
|compression      = 4.9:1
|top_speed        =
|power            = 11.94 HP (8.9 KW) @ 3400RPM
|torque          =
|ignition        =
|spark_plug      =
|battery          =
|transmission    = Gear box: 3 speed, manual <br>
Final Drive: [[shaft]] <br>
Clutch: dry, single plate <br>
 
|frame            =
|suspension      =Front: plate spring, 5 laminae <br>
Rear: hard-tail, sprung seat
|brakes          =Front: 150mm drum <br>Rear: external shoe [[brake]] at gearing (on cardan shaft)
|front_tire      = {{tire|27 x 3.5}}
|rear_tire    = {{tire|27 x 3.5}}
|rake_trail      =
|wheelbase        = 55.51 inches (1410 mm)
|length          = 82.68 inches (2100 mm)
|width            = 31.5 inches (800 mm)
|height          =
|seat_height      =
|dry_weight      =
|wet_weight      = 126.0 kg
|fuel_capacity    =
|oil_capacity    =
|fuel_consumption =
|turning_radius  =
|related          =
|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. 
 
==Engine==
A 68.6mm [[bore]] x 68.6mm [[stroke]] result in a [[displacement]] of just 494.0 cubic centimeters. 
 
==Drive==
The bike has a 3 speed, manual transmission. Power was moderated via the dry, single plate. 
 
==Chassis==
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==
[[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]]
 
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:1920s motorcycles]]
[[Category:Motorcycles needing images]]

Latest revision as of 13:39, 3 June 2020

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