Editing AJS Model 31



{{Infobox Motorcycle
|name             = '''AJS Model 31 650'''
|image            = [[File:ajs-model-31-650-1957-1966-0.jpg|frameless|1957 - 1966 AJS Model 31 650]]
|aka              = 650 Swift
|manufacturer     = [[AJS]]
|parent_company   =
|production       = 1957
|model_year       =
|predecessor      =
|successor        =
|class            = [[Classic]]
|engine           = air-cooled, four-stroke, parallel twin cylinder, OHV, 2 valves per cylinder
|bore_stroke      = 71.1mm x 71.1mm
|compression      = 7.5:1
|top_speed        =
|power            = 43.05 HP (32.1 KW) @ 6000RPM
|torque           =
|ignition         =
|spark_plug       =
|battery          =
|transmission     = Gear box: 4-speed, manual <br>
Final Drive: [[chain]] <br>
Clutch: wet multi-disc, manual <br>

|frame            =
|suspension       =Front: telescopic fork <br>
Rear: dual shocks
|brakes           =Front: drum <br>Rear: drum
|front_tire       = 3.25 -19
|rear_tire   	  = 3.50 -19
|rake_trail       =
|wheelbase        =
|length           =
|width            =
|height           =
|seat_height      =
|dry_weight       =
|wet_weight       =
|fuel_capacity    =
|oil_capacity     =
|fuel_consumption =
|turning_radius   =
|related          =
|competition      =
}}

The '''[[AJS]] Model 31 650 Swift''' was a air-cooled, four-stroke, parallel twin cylinder, OHV, 2 valves per cylinder Classic [[motorcycle]] produced by [[AJS]] in 1957. Claimed [[horsepower]] was 43.05 HP (32.1 KW) @ 6000 RPM.  

==Engine==
A 71.1mm [[bore]] x 71.1mm [[stroke]] result in a [[displacement]] of just 646.0 cubic centimeters.  

==Drive==
The bike has a 4-speed, manual transmission. Power was moderated via the wet multi-disc, manual.  

==Chassis==
It came with a 3.25 -19 front [[tire]] and a 3.50 -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 equiped with a dual shocks.  

==1957 - 1966 AJS Model 31 650==
[[File:ajs-model-31-650-1957-1966-0.jpg|600px|1957 - 1966 AJS Model 31 650]]

The 1957 AJS Model 31 650 has, at its heart, an air-cooled, four-stroke, 646cc, parallel twin powerhouse paired to a four-speed manual transmission, and can reach a maximum power output of 43 horsepower at 6000 rpm. 

It comes standard with features such as a blacked-out frame, a suspension package composed of a front telescopic fork and dual shocks as a rear suspension, a dual seat, a chromed, dual exhaust system, laced wheels, full fenders, and a dual tone paint scheme.

[[Category:Classic motorcycles]]
[[Category: AJS motorcycles]]
[[Category: 1960s motorcycles]]
[[Category: 1950s motorcycles]]