motorcycle

(redirected from Motocycle)
Also found in: Dictionary, Thesaurus, Medical.

motorcycle,

motor vehicle whose design is based on the bicycle. The German inventor Gottlieb DaimlerDaimler, Gottlieb
, 1834–1900, German engineer, inventor, and pioneer automobile manufacturer. His improvements in the internal-combustion engine, made in the 1880s, contributed largely to the development of the automobile industry.
..... Click the link for more information.
 is generally credited with building the first practical motorcycle in 1885. The motorcycle did not become dependable and popular, however, until after 1900. The typical motorcycle has an air-cooled engine supported in a metal frame between two wheels. Sometimes a third wheel is added to support an open carriage, called a sidecar, which is attached to the motorcycle. The motor is a two- or four-cycle gasoline engine with one to four cylinders. Its piston displacement generally ranges from 50 to 1,500 cc. Although the motorcycle is not as safe a vehicle as the automobile, its convenience and economy have made it very popular; it is widely used for pleasure riding, racing, and commercial transportation of light goods. Modern touring motorcycles provide automatic transmission, stereo sound, and luggage space. Motorcycles are widely used by the police for traffic patrols. Use of the motorcycle has increased greatly in recent years as a result of the development of the inexpensive, lightweight motorcycle, manufactured chiefly in Asia. Dirt bikes, motorcycles specially designed and outfitted for off-road use, are also now common. The motor scooter, a variation on the motorcycle, has smaller wheels and has most of its working parts enclosed by a shield. The driver sits on a seat with his or her feet on a wide metal platform behind the front shield. Another variation on the motorcycle is the moped, a bicycle to which a small (under 50 cc) auxiliary engine has been attached. Motorcycle racing is done both on paved and unpaved surfaces, over closed and cross-country courses, for a variety of vehicle classes. Particularly popular is motocross, in which dirt bikes are raced over an off-road closed course with numerous turns, jumps, hills, and other irregular terrain.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Motorcycle

 

a two-wheeled or three-wheeled (tricycle) vehicle with an internal-combustion engine having a displacement of more than 49.8 cu cm. The first motorcycles appeared in Western Europe in the late 19th century. Between 1924 and 1932 experimental models were developed and tested in Moscow, Izhevsk, and Leningrad (the Soiuz, IZh-1, IZh-2, IZh-3, IZh-4, IZh-5, and NATI-750). Serial production was begun in Leningrad in 1933 (model L-300: piston displacement, 300 cu cm; power, 4.7 kilowatts [kW]) and Izhevsk (model IZh-7, which is similar to the L-300).

Motorcycles are classified according to purpose as touring (transportation), sports, and special-purpose types. Touring motorcycles (Tables 1 and 2), which are small and light, have good maneuverability and excellent rough-road performance, and are simple to maintain, are used for personal transportation. The special-purpose types include patrol, escort, and commercial motorcycles.

A motorcycle consists of several groups of mechanisms: the engine, the power train (transmission), the running gear (undercarriage), and the electrical system. The engine is a two- or

Table 1. Specifications of touring motorcycles produced in the USSR
 M-106Voskhod-2Planeta-3IZh lupiter-3Ural-31 M-66Dnepr1 MT-9
1Manufactured only with sidecar 2For motorcycles with sidecars 3One speed in reverse
Engine displacement (cu cm)..........123.5173.7346347649649
Number of cylinders (number of cycles)..........1 (2)1 (2)1 (2)2 (2)2 (4)2 (4)
Cylinder bore (mm)..........5261.757261.757878
Piston stroke (mm)..........585885586868
Compression ratio..........9.5:17.5:17.2:17.5:17.0:17.2:1
Maximum power, kW (hp)..........6.62 (9)8.1 (11)13.2 (18)18.4 (25)23.6 (32)23.6 (32)
Engine speed at maximum power (rpm)..........5,2005,4005,0005,4005,0005,200
Maximum speed (km/hr)..........8595110120 (90)2105100
Number of speeds..........4444443
Empty weight (kg)..........100112156158 (253)2320320
Standard fuel consumption (1/100 km; speed in km/hr shown in parentheses)..........2.75 (50)2.8 (50)3.55 (55)3.75 (55)2 (5.8) 25.8 (55)5.8 (55)
Table 2. Specifications of some foreign-made touring motorcycles
 JAWA 50 (ČSSR)Motobecan D125 (France)ČZ 175 (ČSSR)MZ250 (GDR)Pannonia P20 (Hungary)Kawasaki 305S2 (Japan)BMW P60/5 (FRG)Honda SV750 (Japan)Munch TTS (FRG)
Engine displacement (cu cm)..........481241722492463465997361,200
Number of cylinders..........121122244
Number of cycles..........222222444
Cylinder bore (mm)..........5843587056537.356175
Piston stroke (mm)..........65436565505.237.096366.6
Compression ratio..........7.8:110:18.7:18.5:110.5:17.3:19.2:19:111:1
Maximum power, kW (hp)..........2.9(4)11.04(15)11.04(15)13.9(19)16.9(23)33.2(45)29.4(40)49.2(67)64.8(88)
Engine speed at maximum power (rpm)..........6,5007,0005,6005,5007,5008,0006,4008,5006,500
Maximum speed (km/hr)...........60120115130130170165200215
Number of speeds.............354455454
Weight (kg)............69108112143142150210218240

four-cycle carbureter type, which is cooled by the airstream (some sports and high-performance touring motorcycles are water-cooled). The power per liter of displacement for two-cycle engines of touring motorcycles is 51.5–98.2 kW/I (70–130 hp/l ); for four-cycle engines, 37–66 kW/l (50–90 hp/l ); and for sports motorcycles, 146–220 kW/l (200–300 hp/l ). The power train consists of a clutch, a gearbox, a front (motor) transmission, and a rear (main) transmission. The clutch is of the single-disk or multidisk type (the latter type is used on most motorcycles). The gearbox has two to six speeds, with four in most touring motorcycles. The front transmission (from the engine to the gearbox) is of the chain type or, less frequently, of the pinion type. The rear transmission (from the gearbox to the rear wheel) is of the chain type (sometimes a propeller shaft). The electrical equipment includes a power source (AC or DC generators and storage batteries), an ignition system, a light system (headlights and taillights), and a signal system (turn, brake, and horn signals).

In the USSR, motorcycles are produced in Minsk (displacement, 125 cu cm), Kovrov (displacement, 175 cu cm), Izhevsk (one- and two-cylinder types with a piston displacement of 350 cu cm), and Kiev and Irbit (displacement, 650 cu cm). The output of motorcycles and motor scooters in the USSR was 533,000 in 1960,711,000 in 1965, 833,000 in 1970, and 1,022,000 in 1973. In terms of combined production of motorcycles, motor scooters, and motor bicycles, the USSR is second in the world (more than 1.5 million per year); production in Japan is about 3.5 million (1973).

REFERENCES

Abrosimov, A. A., and A. A. Tarbov. Mototsikly K-750, M-61, M-62. Moscow, 1962.
Zabelin, V. A., and M. P. Isaev. Izhevskie dorozhnye mototsikly, 2nd ed. Izhevsk, 1964.
Mototsikly K-125, K-175 i ikh modifikatsii. 2nd ed. Moscow, 1966. Mototsikl. Moscow, 1971.
Gintsburg, M. G. Ustroistvo i obsluzhivanie mototsiklov, 4th ed. Moscow, 1972.

S. Iu. IVANITSKII and B. V. SINEL’NIKOV

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

What does it mean when you dream about a motorcycle?

Unless we regularly ride one, motorcycles in dreams often represent youthful energy and/or adolescent rebelliousness. A sense of freedom and/or a sense of danger.

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.

motorcycle

[′mōd·ər‚sī·kəl]
(mechanical engineering)
An automotive vehicle, essentially a motorized bicycle, with two tandem and sometimes three rubber wheels.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

motorcycle

a two-wheeled vehicle, having a stronger frame than a bicycle, that is driven by a petrol engine, usually with a capacity of between 125 cc and 1000 cc
www.bmrc.co.uk
www.fim.ch
http://motorcycles.about.com/
www.crmc.co.uk/links.htm
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
The belly pod allows you to carry the MotoCYCLE (with front wheel removed), using removable cradles that attach to the floor of the pod using thumbscrews.
Selon les chiffres communiques par le ministere de l'Equipement, du Transport et de la Logistique, le nombre de motocycles a grimpe de 31.350 en 2010 a plus de 59.000 en 2017, soit une hausse de 43,5% pendant les 7 dernieres annees.
The police recovered snatched mobile phones, motocycle, and other valuable from the suspects.
This demonstration was supported by the recent independent test carried out by the Union Technique de l'Automobile, du Motocycle et du Cycle (UTAC) which showed that Toyota forklifts out performed four alternative forklifts brands in terms of truck stability.
A YOUNG biker was killed as his motocycle hit a stray cow on a country road.
Lae1/4aointervenant a [euro]u[c]voqu[euro]u[c] les cons[euro]u[c]quences du non-respect du code de la route dont le non-port de casque pour motocycle alors que [euro]o[beaucoup moins que] celui-ci r[euro]u[c]duit le risque de traumatismes cr[euro]uAoniens et leur gravit[euro]u[c] de pr[euro]u[c]s de 70% [euro]o[beaucoup plus grand que].
Dans ce document, on apprend aussi que l[yen]AaAaAeAcop'AaAaAeAeration de ratissage 1/ permis de retrouver le motocycle, l'arme 'AaAaAeA~ feu et des balles utilis'Aa dans l[yen]AaAaAeAcex'AaAaAeAecution du crime1/2AaAaAeAu, mais aussi que 1/2AaAeAeA les auteurs pr'Aa ont mis le feu et abandonn'AaAaAeAe dans un terrain vague1/2AaAaAeAu les indices susmentionn' 1/2AaAeAeA qui font actuellement l'objet d[yen]AaAaAeAcexamens techniques et balistiques1/
The styling won it the Motocycle Designers Association award last year.
And, yes, Erik Estrada, as California Highway Patrol motocycle cop Ponch is alive and well in cyberspace.
Six prepared Motocycle borne IEDs, and two Vehicle Borne IEDs, two Guns 12.7 mm, one Gun 14.5 mm, three Vehicles, 11 suicide jackets and huge cache of arms and ammunition were recovered during last 24 hours in area Khar Warsak and Zartangi,ISPR press release said.
Dans la meme operation, la police a mis en garde a vue un autre jeune en possession de 150 comprimes psychotropes sur son motocycle dans la meme ville.