Gnome et Rhone - X
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Gnome et Rhone D2-492-34-04
Photo ou archives : archives FMD

Capacity : 750
Model : X
Production : 1935 - 1939
Category : (R) Street Bike

Gnome & Rhône

750 Type X -1937

Muscular record-breaker

After WWI, France produced very few largedisplacement bikes - and most of those were fairly marginal affairs. The sole exceptions were the 750 and 1000 Rene Gillet and the 750 X Gnome & Rhône. At the time that Gnome launched its 750, it was France's finest bike.


Simpler than ABC

Gnome & Rhône's first motorcycle of 1924 was a license-built ABC ohv flat twin, a machine so far ahead of its time and so costly to build that Gnome was forced to turn to simple, economical single-cylinder machines. A flat-twin did not reappear in the catalogue until the 1930 Paris Salon when the shaftdrive V2, with a side-valve engine, was launched. It was followed two years later by the 81 mph overhead-valve CV2, one of France's fastest bikes of its day.


Custom-Built Sidecar

All that was needed by Gnome and Rhone was to be known as France's finest sidecar machine. The 750 X, unveiled at the Paris Salon in October 1935, filled that role to perfection. Powerful due to its engine size, with four speeds and shaft drive, it hauled a Bernardet "Sport" sidecar with a chassis custom-built for the 750 X, at an easy 75 mph, taking many records. Rapid and reliable, the 750 X broke 20 world records in September and October 1937, including 24 hours at 84.86 mph. Two years later, between April and July 1939, it reasserted its superiority by setting 24 new world records, including 50,000 kilometers covered in 19 days at an average of 67.98 mph.



Engine: 724cc (80x72rnm) air-cooled flat-twin four-stroke; needle-roller big ends

Power Rating: 30 hp @ 5500 rpm

Valves: overhead

Fuel System: two AMAC carburetors

Transmission: 4-speed, shaft final drive

Suspension: pressed-steel forks (front); rigid (rear)

Brakes: drum (front & rear)

Wheels: 3.50x19 inch wire (front & rear)

Weight: 112 lb

Maximum Speed: 75 mph with sidecar


In its superb ivory cellulose finish, this 750 X is exactly as described in the luxurious Gnome & Rhône catalogue issued in 1937.


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 for conditions and copyright.

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François-Marie Dumas

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