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Bouton tricycle

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Bouton tricycle

De Dion-Bouton tricycle
1900 De Dion-Bouton tricycle at the Louwman Museum, The Netherlands
Manufacturer De Dion-Bouton
Production 1897–1905
Class Motorized tricycle
Engine 138–955 cc Four-stroke, air cooled single-cylinder engine with surface carburetor
Power 0.5–8 HP at 1,500–1,800 RPM
Ignition type Electric
Transmission Direct transmission, chain drive
Frame type Decauville
Brakes Front: Clasp brake
Rear: Band brake
Tires Michelin pneumatic tires
Dimensions W: 92 cm track
Weight 80 kg (180 lb) (dry)

The De Dion-Bouton tricycle was the most successful motor vehicle in Europe from 1897 until the start of the 20th century. With about 15,000 copies sold,[1] the de-Dion-Bouton motor tricycle scored the first breakthrough for the distribution of motor vehicles.[1] In particular the fast-running de Dion-Bouton engine set new standards for vehicular motors and is regarded as the precursor of all motorcycle engines.[2]

Development

[1] which should have already reached a speed of 65 km/h.[3] Trépardoux, who wished to continue the further development of steam engines, resigned from the company in 1893; De Dion and Bouton opted for the development of gasoline engines after they viewed Daimler's engines at the Paris Exposition of 1889.[4]

Motor

in 1895, the first four-stroke engine was ready for production. The 138 cc (bore 50 mm, stroke 70 mm) single cylinder engine with a surface carburettor produced 0.5 HP at an engine speed of 1500 RPM,[5] a remarkably high speed for the time. For comparison: Hildebrand & Wolfmüller reached 240 RPM, the Daimler Reitwagen motor ran at maximum 750 RPM.[5] Bouton found out that the glowplug ignition was the obstacle to higher speeds. He developed a high voltage ignition system for the motor with circuit breaker. The dry battery for the ignition is located under the upper frame tube (in the case of a motor tricycle); ignition timing could be adjusted with a small lever. Side valves were driven via a gear-driven camshaft, with automatic snifting valve activation. The advantage of the design should have been very early (0-5 degrees before top dead centre) opening inlet valve.[6] The cylinder head was removable and bolted with four bolts on the crank case. The weight of the existing cast iron engine including all auxiliary units amounted to less than 20 kg. "The benefits of this engine were simplicity and ease."[5]

Motor tricycle

The De Dion-Bouton motor tricycle went into production in 1897 weighing just under 80 kg, with an output of 1.5 HP at 1,800 RPM from its 211 cc motor, although the engine had already been established in a prototype tricycle in 1895.[5] The tricycle with track width of 92 cm was chosen, because according to Dion and Bouton "a bike appeared too fragile for this purpose."[4] The drive was achieved via a pair of gears from the motor directly to the rear axle. A differential balanced the different curve radii. The relatively high purchase price amounted to 1000 to 1500 [3]

Licensees and copies

After the start of series production of the motor in 1895,[2] and with the production of the motor tricycle in 1897, numerous manufacturers built engines or complete tricycles either under license or copied with slight changes:[5]

Notes

  1. ^ From 1897 to 1901, without licensee and copies
  2. ^ About 200,000 engines should have been produced in total

References

  1. ^ a b c Enzyklopädie des Motorrads [Encyclopedia of Motorcycles], Instituto Geografico De Agostini, 1996, p. 132,  
  2. ^ L.J.K. Setright (1982), The Guinness Book of Motorcycling. Facts and Feats., p. 23,  
  3. ^ a b Ferdinand C.W. Käsmann (2003), Weltrekordfahrzeuge [World record vehicles], Berlin: Schwarzkopf & Schwarzkopf Verlag, p. 328,  
  4. ^ a b Juráj Porázik (1983). Motorräder aus den Jahren 1885 bis 1940 [Motorcycles of the years 1885 through 1940] (in German). Dausien Werner. p. 54.  
  5. ^ a b c d e Cyril Posthumus; Dave Richmond (1978). Motorräder gestern und heute [Motorcycles yesterday and today]. München: Heyne. p. 15.  
  6. ^ Peter Kirchberg (1981), Oldtimer – Autos von einst [Old-timers - Autos of the past] (4 ed.), Leipzig: Urania-Verlag, p. 30 
  7. ^ Dinglers Polytechnisches Journal (reprint) (323), 1908: 312,  
  8. ^ Christian Bartsch (ed.), Ein Jahrhundert Motorradtechnik [A century of motorcycle technology], Düsseldorf: VDI-Verlag, p. 54,  

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