Sisu KB-45

Sisu
KB-45
Manufacturer:	Oy Suomen Autoteollisuus Ab
Production period:	1965-1970
Previous model:	none
Successor:	Sisu A-45 / AH-45
	Technical specifications
Engines:	Leyland , in- line diesel engine
Perm. Total weight:	on the road : 8.8 t off- ; road : 7.1 t

The Sisu KB-45 is a truck introduced in 1965 by the Finnish vehicle manufacturer Suomen Autoteollisuus (SAT). The two-axle, all-wheel drive truck with a payload of 4000 kg was developed for the Finnish armed forces. The successor is the almost identical Sisu A-45 / AH-45 .

planning

The KB-45 was developed for the tasks of the light infantry of the Finnish armed forces. The project coordinator was lead engineer Uoti Hartikainen. The first prototype was built in the SAT test department on Flemingstrasse, Helsinki. It was finished in March 1964. The prototype was the last truck with SAT's own AMI gasoline engine. The axles came from Kirkstall. At an early stage of development it was called Proto , which was derived from prototyyppi (prototype).

After the first prototype, the Finnish armed forces suddenly changed the specifications; the wheelbase should be shortened by 30 cm. The reason for this change were results of measurements by the armed forces, according to which the average distance between trees was less than assumed in the Finnish forests. Due to the shortening of the wheelbase, there were great difficulties in the gear arrangement, whereupon the main and reduction gears had to be moved. The shortened distance between the intermediate shaft now had to be replaced by a technically sophisticated toothed socket solution. Another requirement of the armed forces was the replacement of the gasoline engine with a diesel engine, which also turned out to be problematic. Due to the insufficient capacity, the loading area fastening system also had to be changed. However, the armed forces were satisfied with the final solutions.

Production and use

The first 18 vehicles were handed over to the Finnish armed forces in August 1965 and were mainly used to pull howitzers and anti-aircraft cannons. They received a total of 83 KB-45 trucks, two of which were equipped as fire engines. The successor A-45 / AH-45 had a very similar structure. The biggest difference was that the Kirkstall axles were replaced by SAT's own axles. At the same time, production was relocated from Karis to Hämeenlinna, to the old Vanajan Autotehdas factory .

The KB-45 trucks were replaced by the new Sisu A2045 in the Finnish armed forces.

Technical specifications

The KB-45 is equipped with a Leyland in-line diesel engine with a usable speed range from 1000 to 2400 min ⁻¹ and 135 hp.

The two axles are driven by a fully synchronized five-speed gearbox. In addition, the vehicle has a two-speed reduction gearbox and both axles are equipped with lockable differentials that have longitudinal leaf springs and double-acting shock absorbers.

The flexible frame allows torsional rotations, so that all wheels have contact with the ground in difficult terrain. The cabin is made of GRP and steel and is connected to the frame at three points. The loading area has a length of 4.28 meters and space for 25 people. It is connected to the frame at four points.

The winch pulling force is 6 tons and is equipped with a torque limiter.

Some vehicles have been equipped with the hydraulic Sisu Nemo trailer power transmission system to improve off-road capability when towing a trailer. The system was marketed under the name Two-In-One ("Two-In-One").

properties

The largest payload in the field is 2,300 kg and 4,000 kg on the road. The front overhang is 1,300 mm long and the rear 1,000 mm. The turning radius is 7.6 m and the top speed is 90 km / h.

The good terrain properties are due to the centrally placed motor, which enables an even distribution of the wheel load, even in rough terrain. One of the wheels can be jacked up to a meter while the other three are still touching the ground. During the tests, a climbing ability of 60% was achieved and a sideways movement of 45%.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f Olli Blomberg: Suomalaista Sisua vuodesta 1931 - Monialaosaajasta kuorma-autotehtaaksi . Oy Sisu Auto Ab, Karis 2006, ISBN 952-91-4918-2 , p. 103, 135-137, 304 (Finnish).
↑ ^a ^b ^c ^d ^e ^f ^g Olli Blomberg: Yhteissisusta Vanajan ja Sisun kautta Patriaan . Patria Vehicles Oy, Hämeenlinna 2003, ISBN 952-91-5613-8 , p. 123-124 (Finnish).
↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Kalle Oksala: Maastoajoa suomalaisittain . In: Tekniikan Maailma . No. 14, 1965, p. 30.
↑ ^a ^b Markku Mäkipirtti: Puolustusvoimien moottoriajoneuvot 1960–2000 . Apali Oy, Tampere 2006, ISBN 978-952-5026-50-4 , pp. 99-101 (Finnish).
↑ Konepörssi - Armeija marssii vatsallaan… tai vaihtoehtoisesti Sisulla ( Finnish ) SL-Mediat Oy. June 12, 2009. Archived from the original on March 23, 2012. Retrieved January 15, 2013.

[Monialaosaajasta-1] ↑ ^a ^b ^c ^d ^e ^f Olli Blomberg: Suomalaista Sisua vuodesta 1931 - Monialaosaajasta kuorma-autotehtaaksi . Oy Sisu Auto Ab, Karis 2006, ISBN 952-91-4918-2 , p. 103, 135-137, 304 (Finnish).

[YVSP-2] ↑ ^a ^b ^c ^d ^e ^f ^g Olli Blomberg: Yhteissisusta Vanajan ja Sisun kautta Patriaan . Patria Vehicles Oy, Hämeenlinna 2003, ISBN 952-91-5613-8 , p. 123-124 (Finnish).

[TM_14/1965-3] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Kalle Oksala: Maastoajoa suomalaisittain . In: Tekniikan Maailma . No. 14, 1965, p. 30.

[moottoriajoneuvot_1960-2000-4] Markku Mäkipirtti: Puolustusvoimien moottoriajoneuvot 1960–2000 . Apali Oy, Tampere 2006, ISBN 978-952-5026-50-4 , pp. 99-101 (Finnish).

[Konepörssi:_Sisu_A2045-5] Konepörssi - Armeija marssii vatsallaan… tai vaihtoehtoisesti Sisulla ( Finnish ) SL-Mediat Oy. June 12, 2009. Archived from the original on March 23, 2012. Retrieved January 15, 2013.