Fiat S61
Overview
Type	Grand Prix Car
Manufacturer	Fiat
Model code	S61
Also called	1909-1911 (4+1 made)
Assembly	Turin, Italy
Designer	Giovanni Agnelli
Body and chassis
Body style	Open-Wheeler
Layout	Front Engine, RWD
Powertrain
Engine	10,087 cubic centimetres (615.5 cu in; 10.087 L) Inline 4
Power output	115–125 brake horsepower (117–127 PS; 86–93 kW) @ 1,800-2,100 rpm 1,800–1,875 newton-metres (1,328–1,383 lbf⋅ft) @ 800-1,000 rpm
Transmission	4-speed Chain drive Manual
Dimensions
Wheelbase	3,683 millimetres (145.0 in)
Length	5,112 millimetres (201.3 in)
Width	1,766 millimetres (69.5 in)
Height	1,666 millimetres (65.6 in)
Curb weight	7,000 pounds (3,200 kg)
Chronology
Predecessor	Fiat SB4
Successor	Fiat S74

The Fiat S61 is the fifth Grand Prix car built by Fiat.

The engine was a pair of Straight-twin engines, fit into a Straight-four. The timing was a new for Fiat Overhead camshaft, with 4 valves per cylinder, each with 2 Spark plugs. The majority of the engine was made almost entirely of Brass. The Ladder chassis was steel, however the body was entirely aluminum. The car did not have front brakes, and drum brakes in the rear. The car was extremely successful in America , with David Bruce-Brown finishing third in the First Indianapolis 500. In 1912 Ted Tetzlaff won at the Santa Monica Circuit. However its most prestigious win is the 1912 American Grand Prize. After the initial 4 cars were built, there were enough spare parts retained by Fiat for a fifth unit to be built in Turin in 1970.^[1][2][3][4]

• Fiat S61 Gallery
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  At the 2019 Goodwood Festival of Speed
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