Unapproachable: The 1957 Norton International Model 30

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1957 Norton International Model 30
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Photo by Jeff Barger
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1957 Norton International Model 30
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Photo by Jeff Barger
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Timeless design: The 499cc overhead cam single’s design roots go back to 1927.
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Slim, almost minimalist design gives the Norton International its thoroughbred looks while light weight and willing engine help it perform.
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Slim, almost minimalist design gives the Norton International its thoroughbred looks while light weight and willing engine help it perform.
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Owner Joe Block with his Norton International.
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Replacement gas tank was supplied by the Norton factory about 1959, but was actually for a 1956 model, not 1957.

Top speed:100mph-plus (est.)
Engine:490cc air-cooled OHC single, 79mm x 100mm bore and stroke, 29.5hp @ 5,500rpm (claimed)
Weight (wet):
380lb (173kg)
Fuel capacity:
4.5gal U.S. (17ltr)
Price then/now:
$750 (est.)/$7,000-$16,000

As early as 1908, Norton had adopted the famous “Unapproachable” tag line to describes its motorcycles; the slogan took on renewed meaning in 1927, when Norton’s Walter Moore designed a new overhead camshaft engine called the CS1 — for Camshaft Model One.

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