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1979 Yamahopper QT50 Retro Moped

The Yamaha QT50 Yamahopper is a moped manufactured by the Yamaha motor company from 1979 to 1992. The 50 in the name is derived from the displacement 50cc. QT50s were popular among pre-drive-age teens in the late 1970 and 1980 years due to their ease of use and maintenance, extreme energy efficiency and legality in most American States. QT50s and other mopeds enjoy popularity again due to their energy efficiency and nostalgic attractiveness.
 
1979 Yamahopper qt50

The QT50 and similar Honda express share a skeletic, almost insect-like appearance. The Yamahopper is not actually a scooter, as the QT50 has no coating, the sports feet pans instead of footboards, and its two-stroke Reed valve engine slides under the monotube-frame motorcycle style. The QT50 looks very closely at contemporary mopeds, but without the typical bike pedals of the class, leading some to refer to these vehicles as  "Nopeds. "  "the Yamahopper has a peak speed of approximately 30 km/h in the form of storage and can therefore be used for driving in the city.

The Yamahopper compact and weatherproof Powertrain resembles a minimalist version of the closed wave drives of most BMW motorcycles. Simple, maintenance-free wave training in the unilateral swivel arm eliminates chain maintenance, safety and wear, as well as weighing factors, and contributes to the longevity and ease of use of these small motorcycles. The power unit also has a conventional centrifugal clutch, but only a single gearbox, unlike most mopeds, which have two speeds. The simplified drive structure facilitates the design of wheel changes.

It is also remarkable of the unusual load and ignition system with a six volt battery and a generator. This system facilitates cold start: when the key is placed in the "start" position, the ignition provides a spark that is stronger than normal for takeoff, but does not rotate the motor to avoid burning the piston. Once put to life with the reverse Kickstarter lever, left, the key is turned to  "run " and the motor can rotate freely.

Popular modifications include: Yamaha YT60 cylinders, pistons and rings. Yamaha MJ50 towny two Carter and right vibration. Rear gear Yamaha PW50. Carburettors Mikuni VM15 and VM18. JEMCO exhaust, etc.

The YF60s, the quad), the engines were all derived from the engine of the QT50 and all parts are interchangeable, although some parts are slightly different, for example the right side of the model that is on the right side. The rear arm mounts, with the exception of the QT50. Most parts for the QT50 are always available from Yamaha dealers. New and used parts can often be found on eBay.