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Motori Minarelli was founded in Bologna in 1951 as a motorcycle manufacturer. In 1954 it also began to build mopeds. Two years later Minarelli switched exclusively to 2-stroke engine manufacture and a new 2000 square metre factory was constructed for these purposes. It employed 20 technical staff and produced 70 engines a day.
In 1997 Yamaha introduced the Aerox to the European market. It came in two models, the 2-Stroke 50 cc [1] (Internally known as the YQ50) powered by the Minarelli MA-50 horizontal Liquid cooled engine with a front and rear disc brake (DD), this engine came restricted to 45 km/h from the factory to follow European law on 50 cc mopeds.
The 50 cm³ engine is manufactured by Minarelli and is an air-cooled two-stroke engine. The monorail frame has a double rear cradle with 16 "wheels. The Braking System consists of a 220 mm front Disc and a 110mm Drum rear. At the debut in Italy only the single-seater version was available while abroad the two-seater homologation with longer ...
The model made until 2005 was powered by a single cylinder two-stroke aluminium cylinder block, liquid cooled 49.7 cc (3.03 cu in) Motori-Minarelli AM6 engine. The new model, made since 2006, uses a single cylinder two-stroke aluminium cylinder block, liquid cooled 49.9 cc (3.05 cu in) engine made by Derbi, the D50B0. The bike is popular in ...
The SR50 has used a variety of engines, sourced from Morini, Piaggio and Minarelli. It conforms to EURO 3 emission standards. The DiTech model used an injection engine, with technology from Orbital. The current model uses a Dell'Orto carburetor. The powerful engines allow reaching very high speeds for a scooter, the SR50 can reach 90 km/h in ...
A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...
For the first generation Jog, produced from 1986 to 1987, was actually part of the Riva family and in many areas was initially known as the Riva Jog. It was powered by an air-cooled two-stroke reed valve 49 cc (3.0 cu in) vertical Minarelli single-cylinder engine producing with 4.5 hp (3.4 kW) and 4.3 lb⋅ft (5.8 N⋅m) of torque.
Animation of a two-stroke engine. A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle.