Automoto Motorcycles

Today in Motorcycle History

Motocyclette type "GRAND SPORT" 3 CV 250ccm

Engine: two-stroke; bore 65mm, stroke 75mm; volume 250ccm; power 3 CV; 2 sp; crankshaft mounted on 2 plain bearings

Lubrication: petrol and oil mixture

Ignition: magneto

Carburettor: automatic with two levers: petrol and air regulation

Transmission: Campbell system, 3 speeds

Coupling: gradual, multi-disc cork plates, externally adjustable

Gears: 1 ° primary chain from engine to gearbox with aluminum cover; 2 ° secondary chain from gearbox to rear wheel.

Frame: tubular looped

Fork: reinforced, parallelogram type with adjustable steering damper. Pressure lubrication by Técalémit pump.

Wheels: 19" with drum brakes, front dia. 130mm, rear 170mm removable. Balloon tyres 70 x 100 Dunlop

Saddle: Terry

Footrests: rubber

Tank: for approx. 8.5 litres of mixture

Oil tank: 2 litres

Exhausts: two long nickel-plated pipes with high-capacity aluminum silencers

Knee pads: rubber, affixed to tank

Tool box: mounted above the tank with a lockable lid.

Tyre Pump: 40x24 mounted on the front fork

Note: Some sources give the date of the Grand Sport as 1927. Source: Automoto A9