Sisu SA-240
| Sisu SA-240 and SA-241 | |
|---|---|
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|
| Overview | |
| Manufacturer | Oy Sisu-Auto Ab |
| Also called | Raskas Masi, "Rasi" |
| Production |
SA-240: 1984–1990 SA-241: 1990–1991 |
| Assembly | Hämeenlinna, Finland |
| Body and chassis | |
| Class | heavy off-road lorry |
| Body style | platform lorry |
| Related | Sisu SA-150 |
| Powertrain | |
| Engine | Cummins LTA 10 330T/T4 diesel |
| Transmission | ZF 8F1R, torque converter |
| Dimensions | |
| Length | 7 800 mm |
| Width | 2 500 mm |
| Height | 3 100 mm |
| Kerb weight | 10 000 kg |
Sisu SA-240 is a heavy off-road lorry made by the Finnish heavy vehicle manufacturer Oy Sisu-Auto Ab from 1984 until 1991. The six-wheel drive lorry with payload of 12 000 kg was developed for pulling of heavy cannons of the Finnish Defence Forces.
The Sisu SA-150 medium size off-road lorry turned out to be too weak to pull the heaviest, domestic made cannons of the Finnish Defence Forces. A new 6×6 lorry was suggested as a solution. The development work began in 1983. The first two prototypes, called SA-180, were powered by turbocharged Valmet 611 engines with a maximum output of 180 kW. The transmission, made by ZF, was equipped with a torque converter which enabled flexible driving on road and terrain. The system was tested by driving a test vehicle from Hämeenlinna to Sodankylä with the same gear.
After field tests were completed the engines were replaced by 10-litre Cummins diesels and the model code was changed to SA-240. The vehicle was soon nicknamed Rasi, which came from Raskas Masi, "heavy Masi".
The first factory produced SA-240, configuration Sisu SA240 CKH-6×6/4950+1440, was handed over to the Finnish Defence Forces in May 1984. The vehicle was built with an extra long wheelbase and equipped with a detachable anti-ship missile system MtO 85. The first SA-240 made for artillery use, configuration Sisu SA 240 CKH-6×6/3740+1440, was handed over at the end of the following year. In 1987 a series of 13 vehicles was produced and serial production began in 1988. SA-240 was replaced by further developed SA-241 in 1990, but the production ceased already in 1991.
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