Difference between revisions of "BMW R 47"

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#Redirect [[BMW R47]]
 
{{Motorcycle
|name            = BMW R 47
|photo=bmw-r-47-1928-1928-1.jpg
|aka              =
|manufacturer    = BMW
|parent_company  =
|production      = 1928
|model_year      =
|predecessor      =
|successor        =
|class            = Classic
|engine          = air-cooled, four-stroke, boxer twin cylinder, OHV
|bore_stroke      = 68.6mm x 68.6mm
|compression      = 5.8:1
|top_speed        =
|power            = 17.97 HP (13.4 KW) @ 4000RPM
|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 the 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            = 30.98 inches (787 mm)
|height          =
|seat_height      =
|dry_weight      =
|wet_weight      = 130.0 kg
|fuel_capacity    =
|oil_capacity    =
|fuel_consumption =
|turning_radius  =
|related          =
|competition      =
}}
 
The '''[[BMW]] R 47''' was a air-cooled, four-stroke, boxer twin cylinder, OHV Classic [[motorcycle]] produced by [[BMW]] in 1928. Claimed [[horsepower]] was 17.97 HP (13.4 KW) @ 4000 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 the 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. 
 
==1928 BMW R 47==
[[File:bmw-r-47-1928-1928-1.jpg|600px|1928 BMW R 47]]
[[File:bmw-r-47-1928-1928-0.jpg|600px|1928 BMW R 47]]
 
The House of Munich has launched the 1927 R 47 with an air-cooled, four-stroke, 494cc, boxer twin cylinder powerplant mated to a three-speed manual transmission, that could produce a claimed 18 horsepower at 4000 rpm. It comes with a front drum brake, a plate spring fork, a hard-tail rear suspension, a single sprung seat, a rear luggage rack, pull-back handlebars, laced wheels, long fenders, and a small luggage rack in the front.
 
[[Category:Classic motorcycles]]
[[Category:BMW motorcycles]]
[[Category:1920s motorcycles]]

Latest revision as of 02:32, 14 June 2020

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