1933 Salmson S4C Twin Cam – AL1100-Style Sports Two-Seater

History and Transformation

Salmson’s twin-cam engineering has long attracted those who appreciate clever design wrapped in compact, purposeful machinery. This 1933 S4C is a particularly appealing example — thoughtfully developed over time into a car that captures the spirit of the great French voiturettes while remaining immensely usable and enjoyable.

The story begins with a chance encounter in France, where the car was discovered in single-seater form. Its sophisticated 1480cc twin-cam engine immediately caught the eye of its then owner, who recognised the potential beneath the simple bodywork. The car returned to England and was entrusted to Ian Pitney Coachworks, where it was transformed into the handsome AL1100-style sports two-seater you see today. The result is a beautifully proportioned machine that feels entirely in keeping with the golden era of French sports cars.

Driving Experience and Cockpit Details

Climb aboard and the experience feels immediately familiar to anyone who has spent time around the great pre-war competition cars. The detachable steering wheel slots into place and the wooden rim falls easily to hand. The dashboard layout hints at Bugatti inspiration — until you notice the missing eight-cylinder magneto and remember this is Salmson’s wonderfully compact twin-cam instead. There is, however, rather more legroom than its Molsheim counterpart.

On the Road and Mechanical Development

On the road the car is surprisingly civilised. The chassis and suspension give a composed ride even on uneven surfaces, while the lively twin-cam pulls enthusiastically through the 3 speed gearbox. It’s a car that invites you to keep driving.

Since purchasing the Salmson from us previously, the current owner has continued to refine and develop the car, using it exactly as intended. Highlights of ownership included a memorable trip to the final running of the Vintage Revival Montlhéry in France, where it travelled in good company alongside friends — one of whom was driving his GN, also recently sold by us.

During his stewardship further mechanical development has been carried out, including the installation of a new engine block, ensuring the car remains strong and dependable for future adventures.

Starting is simple thanks to the modern high-torque starter motor now fitted in place of the earlier dyno start arrangement. The engine fires readily and settles into a crisp note that hints at the eager character waiting to be explored.

Work Completed Over Time

· Coachwork by Ian Pitney styled to the AL1100 sports two-seater

· Mechanical inspection and preparation by Bob Threddar, motor engineer

· Front axle rebuilt

· New kingpins and bushes fitted

· Detachable steering wheel fitted

· Rear axle rebuilt

· New crown wheel and pinion fitted

· New brake drums all round

· Marshal headlights with yellow bulbs

· San Sebastián radiator cowl fitted

· Rear LED lighting with cloth braided wiring

· Monza Connolly hide interior

· High-torque starter motor fitted (replacing the earlier dynostart)

· New engine block fitted during current ownership

A Car For A Wide Variety of Enjoyable Uses

This is an immensely likeable pre-war sports car — light, eager and full of character — equally suited to relaxed touring, historic events, or simply a spirited morning drive. A car that rewards use and has clearly been enjoyed exactly as its makers intended. For further details or to discuss the car, please get in touch today.

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