Production Years: 1925
Country: France
Number Produced: 1(Prototype Only)

Jacques Gerin was a pilot in the French military during World War I. He went on to design two cars, the first one driven by a propeller and the second one with a mid-engine and many unique features. This second car was the “Aerodyne.” The body, made of pieces of wood laminated between cast aluminum, is a space frame. There is no chassis.

The shape is aerodynamic. The body was never finished and it is now being made by our shop following the drawings and patent from Jacques Gerin. Sheets of aluminum are formed to follow the contour of the frame. The car was patented in the early twenties. Manufacturing of the prototype was done by Ratier – Ratier Figeac today – in the suburb of Paris, in 1925 and 26.

It is a mid-engine automobile. The 2 liter overhead valve engine is mounted in front of the rear axle. As with everything else in the Gerin, it is a very modern engine for the twenties. Valve springs are tronconic to suppress the vibrations, the rockers are pivoting on ball bearings and there is no oil in the top of the engine. Chevron gears were selected for distribution. There is a dual ignition with one magneto and one distributor.

An independent suspension on all four wheels with hydraulic shock absorbers. The suspension is done through articulating arms. The front wheel has hydraulic brakes with four shoes per wheel. The drum of the brakes is the rim of the wheel itself. Steering is a rack and pinion design, and the steering wheel is adjustable in height.

The transmission is also original; the rear shafts, with inboard brakes, use a small diameter gear to drive the main gear in the wheel. The rear wheels oscillate around the transmission shaft.

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We apologize for any inconvenience during this challenging time but it is for the health and safety of our staff and guests. Limited entry is mandated by Pinellas County and the State of Florida. We do require that all guests, as well as Museum staff wear face masks and maintain proper social distancing. The Museum is adhering to the CDC Guidelines for keeping the public areas clean. Thank you for understanding and should you have any further questions or concerns, please call 727-579-8226

Please note that the vehicles shown online are part of our collection but may not be on display when you visit. Our team is always in some stage of repair or restoration on a number of vehicles.


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Tampa Bay Automobile Museum

3301 Gateway Centre Blvd.
Pinellas Park, FL 33782 USA

Museum Hours:

Monday - 10am - 4:30 pm
Wed- Sat: 10am - 4:30 pm
Sunday: Noon - 4:30 pm


$12 General Admission
$10 Seniors (62+)
$8 Youth and Active Military
12 and under Free
Groups of 12 or More $8 pp