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240 Landmarks of Japanese Automotive Technology
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240 Landmarks TopPassenger Cars, Part 1 > Toyopet SA
 Toyopet SA
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Equipped with the type S engine, the SA had Japan's first domestically designed backbone type Y-frame, and 4-wheel independent suspension. A single pipe ran longitudinally down the center of the vehicle as a spine to act as the frame, passing through a propeller shaft in the center. At the front, the spine branched into 2, forming a Y-shape, between which the engine was mounted. The rear end was fixed to a differential case, allowing a swinging up and down movement centered on hinge joints at the left and right ends of the differential case to transmit power to the rear axle. The 4-wheel independent suspension, which created a new type of action generated by transverse leaf springs, was responsible for excellent ride comfort unmatched by any small car. The SA I seated 4 passengers, and the SA II was a 2-door sedan that seated 5. The gearshift was provided next to the steering wheel and operated by means of a link type remote control. The low center of gravity of the SA due to its backbone structure gave it excellent stability over 80 km/h.
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Storage location:TOYOTA AUTOMOBILE MUSEUM (41-100, Yokomichi, Nagakute, Nagakute-cho, Aichi-gun, Aichi-ken 480-1131)
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Year manufactured:1947
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Manufacturer:Toyota Motor Corporation
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Classification:Mass-production vehicle
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Current status:On public display: static
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Vehicle name / Manufacture
Vehicle name:Toyopet Model SA
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Model name:Model SA I
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Company name:Toyota Motor Co., Ltd.
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Year manufactured:1947
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Vehicle type/usage:Small passenger car
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Location of actual vehicle/replica:Toyota Automobile Museum
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Model / Weight
Style:Sedan
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Number of doors:2
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Passenger capacity:4
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Vehicle weight:1170 kg
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Body / Size
Step:None
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Overall length:3800 mm
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Overall width:1590 mm
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Overall height:1530 mm
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Tire size:4.75-16
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Features:Minimum ground height: 170mm
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Body / Axle / Driving / Others
Front axle:Independent suspension, coil spring
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Rear axle:Independent suspension, lateral flat spring
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Wheelbase:2400 mm
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Front tread x rear tread:1300×1350 mm
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Steering:Recirculating, ball
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Dampers:Shock absorber
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Stabilizer:Provided
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Engine / Size / Power
Cooling/cylinder arrangement:Water-cooled/inline 4-cylinder (S type)
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Valve train:Side valve
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Carburetor:Improved Carter type
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Bore x stroke:65×75 mm
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Displacement:995 mL
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Max. power/r.p.m.:27 hp/4000 rpm
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Max. torque/r.p.m.:5.9 kgm/2400 rpm
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Fuel tank capacity:30 L
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Fetures:Developed to be small, light, and consume less fuel
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Hybrid
Hybrid system type:None
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Drive-train
Transmission:3 forward speeds, 1 reverse speed
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Drive system:FR
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Performance
Mode fuel efficiency:-
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