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Difference between revisions of "AJS 7R"
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[[Category:AJS]] | [[Category:AJS]] | ||
{{Infobox Motorcycle | |||
|name = '''AJS 7R''' | |||
|image = | |||
|aka = | |||
|manufacturer = [[AJS]] | |||
|parent_company = | |||
|production = 1948 - 1953 | |||
|model_year = | |||
|predecessor = | |||
|successor = | |||
|class = [[Classic]] | |||
|engine = air-cooled, four-stroke, single cylinder, OHC | |||
|bore_stroke = 76.2mm x 76.2mm | |||
|compression = 12.2:1 | |||
|top_speed = | |||
|power = 39.96 HP (29.8 KW) @ 8000RPM | |||
|torque = | |||
|ignition = | |||
|spark_plug = | |||
|battery = | |||
|transmission = Gear box: 4-speed, manual <br> | |||
Final Drive: [[chain]] <br> | |||
Clutch: dry, multiplate <br> | |||
|frame = | |||
|suspension =Front: telescopic fork <br> | |||
Rear: dual shocks | |||
|brakes =Front: drum <br>Rear: drum | |||
|front_tire = 2.75 x 19 | |||
|rear_tire = 3.50 x 19 | |||
|rake_trail = | |||
|wheelbase = | |||
|length = | |||
|width = | |||
|height = | |||
|seat_height = | |||
|dry_weight = | |||
|wet_weight = 129.0 kg | |||
|fuel_capacity = 1.59 Gallon (6.00 Liters) | |||
|oil_capacity = | |||
|fuel_consumption = | |||
|turning_radius = | |||
|related = | |||
|competition = | |||
}} | |||
The '''[[AJS]] 7R''' was a air-cooled, four-stroke, single cylinder, OHC Classic [[motorcycle]] produced by [[AJS]] between 1948 and 1953. Claimed [[horsepower]] was 39.96 HP (29.8 KW) @ 8000 RPM. | |||
==Engine== | |||
A 76.2mm [[bore]] x 76.2mm [[stroke]] result in a [[displacement]] of just 349.0 cubic centimeters. | |||
==Drive== | |||
The bike has a 4-speed, manual transmission. Power was moderated via the dry, multiplate. | |||
==Chassis== | |||
It came with a 2.75 x 19 front [[tire]] and a 3.50 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 equiped with a dual shocks. The 7R was fitted with a 1.59 Gallon (6.00 Liters) fuel tank. | |||
==1948 - 1963 AJS 7R== | |||
[[File:ajs-7r-1948-1963-0.jpg|600px|1948 - 1963 AJS 7R]] | |||
The 350cc AJS 7R was a racing motorcycle built from 1948 to 1963. In the beginning, the 7R was not too powerful, producing 32HP at 7500rpm. In 1956 the engine dimensions changed from the original long-stroke 74 x 90 mm to the 75.5 x 78 mm. In 1951 there was a version called AJS 7R3, with 36HP and a mellow tuning of the bike increased its power to 40HP in 1954. The AJS 7R could reach a top speed of 110-115 mph. | |||
==1953 AJS 7R== | |||
[[File:ajs-7r-1953-1953-0.jpg|600px|1953 AJS 7R]] | |||
The 1952 AJS 7R has, at its heart, an air-cooled, four-stroke, 349cc, single cylinder powerplant mated to a four-speed manual transmission, and can produce a claimed 40 horsepower at 8000 rpm. This machine has had repeated success at the Junior Isle of Man TT, making it one of the most sought after machines in its class. Standard features include a telescopic front fork, dual shocks as a rear suspension, a dual seat, a large, 23-liter (6-gallon) fuel tank, a small windscreen, a blacked-out frame and laced wheels. | |||
==In Media== | |||
* [https://motopixel.org/pixel/perlicky-na-dne#ajs-7r Perličky na dně] | |||
* [https://motopixel.org/pixel/nuoruus-vauhdissa#ajs-7r Nuoruus vauhdissa] | |||
* [https://motopixel.org/pixel/kdyby-ty-muziky-nebyly#ajs-7r Kdyby ty muziky nebyly] | |||
* [https://motopixel.org/pixel/goodwood-revival-meeting#ajs-7r Goodwood Revival Meeting] | |||
[[Category:AJS motorcycles]] | |||
[[Category:1940s motorcycles]] | |||
[[Category:1950s motorcycles]] | |||
[[Category:Motorcycles needing images]] | |||