Difference between revisions of "BSA B31"
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[[Category:BSA motorcycles]] | [[Category:BSA motorcycles]] | ||
{{Motorcycle | |||
|name = '''BSA B31''' | |||
|photo=B31.jpg | |||
|aka = | |||
|manufacturer = [[BSA]] | |||
|parent_company = | |||
|production = 1949 | |||
|model_year = | |||
|predecessor = | |||
|successor = | |||
|class = [[Classic]] | |||
|engine = air-cooled, four-stroke, single cylinder, OHV | |||
|bore_stroke = 71.1mm x 71.1mm | |||
|compression = 6.5:1 | |||
|top_speed = | |||
|power = | |||
|torque = | |||
|ignition = | |||
|spark_plug = | |||
|battery = | |||
|transmission = Gear box: 4-speed, manual <br> | |||
Final Drive: [[chain]] <br> | |||
Clutch: multi-plate <br> | |||
|frame = | |||
|suspension =Front: telescopic fork <br> | |||
Rear: [[plunger]] shocks | |||
|brakes =Front: drum <br>Rear: drum | |||
|front_tire = {{tire|3.25 x 19}} | |||
|rear_tire = {{tire|3.5 x 19}} | |||
|rake_trail = | |||
|wheelbase = | |||
|length = | |||
|width = | |||
|height = | |||
|seat_height = | |||
|dry_weight = | |||
|wet_weight = 175.0 kg | |||
|fuel_capacity = 1.32 Gallon (5.00 Liters) | |||
|oil_capacity = | |||
|fuel_consumption = | |||
|turning_radius = | |||
|related = | |||
|competition = | |||
}} | |||
The '''[[BSA]] B31''' was a air-cooled, four-stroke, single cylinder, OHV Classic [[motorcycle]] produced by [[BSA]] in 1949. | |||
==Engine== | |||
A 71.1mm [[bore]] x 71.1mm [[stroke]] result in a [[displacement]] of just 348.0 cubic centimeters. | |||
==Drive== | |||
The bike has a 4-speed, manual transmission. Power was moderated via the multi-plate. | |||
==Chassis== | |||
It came with a 3.25 x 19 front [[tire]] and a 3.5 x 19 rear tire. Stopping was achieved via drum in the front and a drum in the rear. The front suspension was a telescopic fork while the rear was equipped with a plunger shocks. The B31 was fitted with a 1.32 Gallon (5.00 Liters) fuel tank. | |||
==1949 - 1959 BSA B31== | |||
[[File:bsa-b31-1949-1959-2.jpg|600px|1949 - 1959 BSA B31]] | |||
[[File:bsa-b31-1949-1959-1.jpg|600px|1949 - 1959 BSA B31]] | |||
[[File:bsa-b31-1949-1959-0.jpg|600px|1949 - 1959 BSA B31]] | |||
The 1949 BSA B31 has at its heart an air-cooled, four-stroke, 348cc, single cylinder powerhouse mated to a four-speed manual transmission that can produce a claimed 22 horsepower at 6000 rpm. It also comes with features such as a telescopic front fork, dual plunger shocks as a rear suspension, a dual seat, a center stand, laced wheels, a large headlight and wide handlebars plus a drum braking system. | |||
==In Media== | |||
* [https://motopixel.org/pixel/linsolent#bsa-b31 L'insolent] | |||
* [https://motopixel.org/pixel/gideons-way#bsa-b31 Gideon's Way] | |||
* [https://motopixel.org/pixel/la-mariee-est-trop-belle#bsa-b31 La mariée est trop belle] | |||
* [https://motopixel.org/pixel/meningen-med-livet#bsa-b31 Meningen med livet] | |||
* [https://motopixel.org/pixel/a-tout-prendre#bsa-b31 À tout prendre] | |||
* [https://motopixel.org/pixel/boon#bsa-b31 Boon] | |||
* [https://motopixel.org/pixel/motorkavaljerer#bsa-b31 Motorkavaljerer] | |||
* [https://motopixel.org/pixel/dirty-dancing#bsa-b31 Dirty Dancing] | |||
* [https://motopixel.org/pixel/cherchez-lidole#bsa-b31 Cherchez l'idole] | |||
* [https://motopixel.org/pixel/a-tout-casser#bsa-b31 À tout casser] | |||
* [https://motopixel.org/pixel/the-darling-buds-of-may#bsa-b31 The Darling Buds of May] | |||
[[Category:Classic motorcycles]] | |||
[[Category:BSA motorcycles]] | |||
[[Category:1940s motorcycles]] | |||
[[Category:Motorcycles needing images]] | |||
Revision as of 18:48, 9 November 2019
BSA announced their post war range, consisting of four models, in August 1945, headed by the sporting B31. The new model was derived utilized the M series crankcases endowing it with a "bombproof" bottom end fitted with an over head valve top end. Early models relied on telescopic forks and saddle springs to provide rider comfort and it was not until 1949 when the machine offered was built that the option of a plunger sprung frame became available.
 |
|
| 'BSA B31' | |
| Manufacturer | [[BSA]] |
|---|---|
| Production | 1949 |
| Class | [[:Category:Classic motorcycles|Classic]] [[Category:Classic motorcycles]] |
| Engine | air-cooled, four-stroke, single cylinder, OHV |
| Bore / Stroke | 71.1mm x 71.1mm |
| Compression ratio | 6.5:1 |
| Transmission | Gear box: 4-speed, manual Final Drive: chain |
| Suspension | Front: telescopic fork Rear: plunger shocks |
| Brakes | Front: drum Rear: drum |
| Front Tire | 3.25 x 19 |
| Rear Tire | 3.5 x 19 |
| Weight | 175.0 kg (wet) |
| Fuel Capacity | 1.32 Gallon (5.00 Liters) |
| Manuals | Service Manual |
The BSA B31 was a air-cooled, four-stroke, single cylinder, OHV Classic motorcycle produced by BSA in 1949.
Engine
A 71.1mm bore x 71.1mm stroke result in a displacement of just 348.0 cubic centimeters.
Drive
The bike has a 4-speed, manual transmission. Power was moderated via the multi-plate.
Chassis
It came with a 3.25 x 19 front tire and a 3.5 x 19 rear tire. Stopping was achieved via drum in the front and a drum in the rear. The front suspension was a telescopic fork while the rear was equipped with a plunger shocks. The B31 was fitted with a 1.32 Gallon (5.00 Liters) fuel tank.
1949 - 1959 BSA B31
The 1949 BSA B31 has at its heart an air-cooled, four-stroke, 348cc, single cylinder powerhouse mated to a four-speed manual transmission that can produce a claimed 22 horsepower at 6000 rpm. It also comes with features such as a telescopic front fork, dual plunger shocks as a rear suspension, a dual seat, a center stand, laced wheels, a large headlight and wide handlebars plus a drum braking system.