Harley-Davidson 750 cm3 Model R Side-car 1934  Engine no. 34R3131

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Lot 233
Harley-Davidson 750 cm3 Model R Side-car 1934
Engine no. 34R3131

€ 19,000 - 24,000
US$ 23,000 - 28,000
Harley-Davidson 750 cm3 Model R Side-car 1934
Engine no. 34R3131
• Modèle repère
• Restauration ancienne
• Immatriculée en Italie

Bien que Harley-Davidson fût familiarisée avec les moteurs à soupapes latérales (les flat head, culasse plate), la marque n'appliqua pas ce type de distribution sur un V-twin avant l'apparition des tout nouveaux modèles 750 (45 ci) types D (standard) et DL (haute compression) en 1929. La désignation passa de D à R en 1932, ce changement coïncidant avec l'adoption d'une nouvelle dynamo (horizontale) et d'un cadre adapté. En même temps, les carters furent modifiés pour loger des volants moteur plus gros et le moteur fut équipé de pistons en aluminium. L'effondrement des ventes consécutif au krach de Wall Street d'octobre 1929 réduisit considérablement les ressources financières nécessaires à l'introduction d'améliorations plus importantes sur la gamme 1933.

Plusieurs perfectionnements furent cependant apportés aux modèles 1934, les twins recevant un cadre et une fourche renforcés, une nouvelle pompe à huile, un système d'échappement relevé High-Flo, des garde-boue plus arrondis et un gros feu arrière Airflow. Régulièrement améliorée et modernisée par la suite, l'immortelle « flat head » de Harley connut une longue carrière sans précédent pour être finalement encore cataloguée en version solo KH en 1956, la variante tricycle Servi-Car étant maintenue au catalogue jusqu'en 1973 !

Restauration ancienne, cette moto Model R est attelée à un side-car du modèle Harley-Davidson correct pour son année. Achetée par la Collection Lonati en octobre 2006, la machine est offerte avec ses papiers d'immatriculation italiens.

Footnotes

  • 1934 Harley-Davidson 750cc Model R Motorcycle Combination
    Engine no. 34R3131

    • Landmark 45ci model
    • An older restoration
    • Italian registered
    .



    Although Harley-Davidson was no stranger to sidevalve ('flat head') engines, it did not apply this valve gear arrangement to a v-twin until the arrival of the all-new 45ci 'D' (standard) and 'DL' (high-compression) models in 1929. The model designation changed from 'D' to 'R' for 1932, the change coinciding with the adoption of a new (horizontal) electrical generator and a suitably modified frame. At the same time, crankcases were changed to accommodate larger flywheels and the engine also received aluminium pistons. With sales dropping to a mere fraction of what they had been before the October '29 Wall Street Crash, there was little money available to finance major changes to the 1933 line up.

    Nevertheless, several improvements were made for 1934, the twins receiving a strengthened frame and forks, a new oil pump, High-Flo upswept exhaust systems, curvaceous new mudguards and a large Airflow tail light. Periodically improved and up-dated thereafter, Harley's immortal flat head enjoyed an unprecedentedly lengthy production life and was last catalogued, in KH solo form, in 1956, though the three-wheeled Servi-Car version was still on sale in 1973!

    An older restoration, this Model R motorcycle is attached to a sidecar of the correct Harley-Davidson pattern for the period. Acquired for the Lonati Collection in October 2009, the machine is offered with Italian registration papers.
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Harley-Davidson 750 cm3 Model R Side-car 1934  Engine no. 34R3131
Harley-Davidson 750 cm3 Model R Side-car 1934  Engine no. 34R3131
Harley-Davidson 750 cm3 Model R Side-car 1934  Engine no. 34R3131
Harley-Davidson 750 cm3 Model R Side-car 1934  Engine no. 34R3131
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