Alcyon - type 306 A
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Alcyon  D2-492-32-18
Photo ou archives : F-M. Dumas

Capacity : 350
Model : type 306 A
Production : 1936 - 1938
Category : (R) Street Bike


306 Type A -1938

Styling success, commercial failure

The effects of the Great Depression on France's motorcycle manufacturers varied widely. The three major manufacturers - Terrot, Peugeot and Motobécane - were least affected, but Alcyon, long the number four French constructor, was hit hard, to the point that its top-of-the-range models of the immediate prewar period are rare - you might say virtually unknown. That's certainly the case with the 306A.

Champion of France

In 1934, after a two-year absence from the French racing championship, Alcyon returned with a superb overhead-cam 350. A gearbox failure cost it the championship that year, but in 1935, the Alcyon became champion of France. That success in a commercially difficult period led Alcyon (the name means "kingfisher" in French) to launch a new road-going 350 - the 306A - in 1936 alongside the aging 304A.

As Elegant as a Real Racer

Its styling was heavily influenced by that of the racer. The overhead-valve engine was the first unit-constructed Alcyon four-stroke engine since 1919; its foot-shift four-speed transmission was a first for the marque. Well-Styling success, commercial failure finished and generously chromed, well-equipped - electric lighting and horn were standard - the 306A was light, very reliable and, with a genuine 75 mph top speed, faster than its main 350cc rivals like the unit-constructed Terrot HR, Motobecane R44C and Peugeot 415. Despite all these good qualities, very few 306As were sold.


Engine: 349cc (70x90mm) air-cooled Zurcher single-cylinder four-stroke; dry-sump lubrication by gear pump; "Aldyno" dynamo/coil ignition unit

Valves: overhead

Fuel System: carburettor

Transmission: 4-speed foot-shift, multi-disc clutch; chain final drive

Suspension: Webb girder fork (front); rigid (rear)

Brakes: drum (front & rear)

Wheels: 3.25x19 inch Dunlop tires (front & rear)

Weight: 254 lb

Maximum Speed: 75 mph

The Alcyon 306A -a handsome bike of genu me virtues catalogued from 1936 to 1939-was rarely seen due to a weak sales network.

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

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