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Ducati Cucciolo 1950-1951 with a 48 cc Ducati engine. In 1952, with 200,000 Cucciolos already sold, Ducati finally offered its own complete moped based on the successful little pull rod engine, removing the pedals and adding a 3 speed gearbox, creating the model 48 (produced until 1954) and model 55E and 55R. Siata-Ducati Cucciolo 50, 1946. [4]
Motorcycles with a V-twin engine mounted with its crankshaft mounted in line with the frame, e.g. the Honda CX series, are said to have "transverse" engines, [1] [2] while motorcycles with a V-twin mounted with its crankshaft mounted perpendicular to the frame, e.g. most Harley-Davidsons, are said to have "longitudinal" engines.
The amount of power generated by a piston engine is related to its size (cylinder volume), whether it is a two-stroke engine or four-stroke design, volumetric efficiency, losses, air-to-fuel ratio, the calorific value of the fuel, oxygen content of the air and speed . The speed is ultimately limited by material strength and lubrication.
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In the early 1970s, bicycle demand continued to increase, prompting Batavus to expand the factory to 25,000 square meters. [2] Moped demand declined, and although there was a significant increase in moped popularity in the USA during the fuel crisis of the 1970s, Batavus built and shipped the last moped in the early 1980s.
The GY6 engine design is a four-stroke single-cylinder in a near-horizontal orientation that is used on a number of small motorcycles or scooters made in Taiwan, China, and other southeast Asian countries. It has since become a generic technology.
It has a small hinged rear pod containing the 49 cc 2-stroke engine and two drive wheels powered through a limited slip differential. The Stream was styled and priced as a luxury personal scooter. Honda's suggested retail price in 1981 was ¥198,000, compared to ¥114,000 for a 49cc Super Cub .
Original - Animated scheme of a four stroke internal combustion engine, Otto principle: #Suction stroke - Air and vaporised fuel are drawn in. #Compression stroke - Fuel vapor and air are compressed and ignited. #Power stroke - Fuel combusts and piston is pushed downwards. #Exhaust stroke - Exhaust is driven out.