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 Monet Goyon - GZO Automouche
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Monet Goyon D2-492-64-16
Photo ou archives : F-M. Dumas

Capacity : 250
Model : GZO Automouche
Production : 1934 - 1948
Category : (R) 3-wheeler


250 Auto-Mouche GW - 1936

A very French design

It's difficult to realize the vast human cost to France during WWI – which was largely fought across its territory. After the war, thousands of Frenchmen were left crippled in some way. To meet their special needs, Monet-Goyon specialized, between 1916 and 1939, in vehicles for the handicapped.

Manually-Powered Tricycle

While WWI was still raging, they offered the Vélocimane and the Voiturette, the former being a manually-powered tricycle with a wicker seat and handcranks driving the single front wheel, the latter with either a 500cc Anzani single or a 750cc MAG V-twin.

Bizarre Machines

The Vélocimane could be fitted with an auxiliary powered wheel driven by a little 120cc engine with an automatic intake valve, making a bizarre machine with its wheels set in diamond formation. It was one in a range of specially-adapted power and pedal two-, three- and four-wheeled devices offered by the company, bearing odd names like "VéloFauteuil" and "Pousse-Pousse Coloniaux." Machines were also built for the able-bodied. In 1921, Monet-Goyon brought out the "Auto-Mouche," a similar machine in which the powered wheel took the place of the right-hand rear wheel. But in 1924, the definitive version of the Auto-Mouche appeared, with an open frame like a scooter and powered by a turbine-cooled 147cc Villiers two-stroke fitted beneath the rider's seat and driving through a two-speed transmission. Later, the Auto-Mouche was available with two seats – first in wicker, then in pressed-steel – and powered by 175 or 250cc Villiers engines.


Engine: 250cc (63x80mm) air-cooled single-cylinder Villiers Mk XIV-A; flywheel magneto

Valves: two-stroke

Fuel System: carburetor

Transmission: 3-speed, shift lever on right of driving seat; chain final drive

Suspension: girder forks (front); rigid (rear)

Brakes: drum (front & rear)

Wheels: 25x3.00 inch (front & rear)

Weight: 176 lb

Maximum Speed: 37 mph

Only the French could have conceived such a bizarre machine, derived from an invalid carriage. Only one rear wheel was driven, to avoid fitting a differential!


Motorcycle encyclopedia Moto Passion, realised by François-Marie Dumas, include almost 2000 photos presented with an exhaustive history of the motorcycles exhibited.

This unique collection has been realised with the participation of many specialists. With many thanks in particular to Yves Campion, Michael Dregni, Didier Ganneau, Jean Goyard, Helmut Krackowizer, Michel Montange, Christian Rey, Bernard Salvat, Mick Woollett, etc

One can order here

  • Original cards on paper (in french)
  • High resolution scans or original documents presented and signed with my name.

Please contact me at info@moto-collection.org for conditions and copyright.

© Tous droits réservés
François-Marie Dumas

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