Fiat S61

Fiat S61
Overview
Type	Grand Prix Car
Manufacturer	Fiat
Production	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 cc (615.5 cu in) I4
Power output	115–125 PS (85–92 kW) @ 1,800-2,100 rpm 1,800–1,875 N⋅m (1,328–1,383 lb⋅ft) @ 800-1,000 rpm
Transmission	4-speed Chain drive Manual
Dimensions
Wheelbase	3,683 mm (145.0 in)
Length	5,112 mm (201.3 in)
Width	1,766 mm (69.5 in)
Height	1,666 mm (65.6 in)
Curb weight	7,000 lb (3,175 kg)
Chronology
Predecessor	Fiat SB4
Successor	Fiat S74

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

History

The engine was a pair of Straight-twin engines, coupled to create a Straight-four. The timing was a new for Fiat overhead camshaft, with four valves per cylinder, each with twin 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, only drum brakes at the rear. The car was successful in American racing, with David Bruce-Brown finishing third in the First Indianapolis 500. In 1912 Teddy 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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References

1. "The FIAT S61 celebrates its 110th birthday". www.fcaheritage.com. Retrieved 2025-01-14.
2. Branch, Ben (2017-12-31). "Restoring The 10-Litre FIAT S61". Silodrome. Retrieved 2025-01-14.
3. "The Fiat S61 Story". www.thefiatstory.co.uk. Retrieved 2025-01-14.
4. "1910 Fiat S61 Grand Prix Specifications & Dimensions". conceptcarz.com. Retrieved 2025-01-14.