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A new frame with rear suspension was introduced in 1963. Scat 15 cu in (250 cc) two-stroke single 1962–1965 Dual-purpose motorcycle based on the Pacer. The Ranger's low gearing was optional. Was switched to the sprung frame along with the Pacer in 1963. Bobcat 15 cu in (250 cc) two-stroke single 1966 Last American Lightweight.
Sportster models are designated in Harley-Davidson's product code by beginning with "XL". In 1952, the predecessors to the Sportster, the Model K Sport and Sport Solo motorcycles, were introduced. These models K, KK, KH, and KHK of 1952 to 1956 had a sidevalve ('flat head') engine, whereas the later XL Sportster models use an overhead valve engine.
Although each Cheney motorcycle is different, many are based on the BSA C15 250 cc engine or the larger 500 cc unit version. The company also manufacture black powder-coated frame kits for BSA C15, B25, B40, B44 and B50 engines, as well as nickel-plated frame kits for Triumph 500 cc or 350 cc unit engines.
A well-designed trellis frame should provide a strong, lightweight structure that simplifies placement of engine and components, and gives good access for maintenance. Although construction of a trellis frame needs a more complicated process than, say, an alloy beam frame, it requires only a simple jig and a competent welder. No heavy capital ...
The prototype of the new loop-frame Harley-Davidson was assembled in a 10 ft × 15 ft (3.0 m × 4.6 m) shed in the Davidson family backyard. [11] [12] Most of the major parts, however, were made elsewhere, including some probably fabricated at the West Milwaukee railshops where oldest brother William A. Davidson was toolroom foreman. This ...
Harley-Davidson was slow to capitalize on this demand, finally introducing the Sportster XR-1000 street bike for the 1983 model year, 13 years after the XR-750 racer. The XR-1000 used XR-750 heads, but kept the Sportster engine, frame and other equipment. [ 10 ]