| Trado | |
|---|---|
 Trado Ford V8 modified as an artillery tractor | |
| Place of origin | Netherlands |
| Service history | |
| Used by | Netherlands |
| Wars | Second World War |
| Production history | |
| Designed | 1935 |
| Manufacturer | DAF |
| Specifications | |
| Engine | Ford V-8 (Trado I & II), Chevrolet 216 (Trado III) |
The Trado was a truck manufactured by DAF in the Netherlands. [1] [2] [3]
It was named after the co-founder of DAF Hubertus van Doorne and captain engineer Piet van der Trappen (Trappen — Doorne).
The Trado consisted of a leaf-springed bogie with two actuated road wheels that could be easily attached to, driven by and rotate on the back axis of any commercial truck, thus adding a "walking beam" to the vehicle that significantly improved its cross-country performance.
The Trado III suspension system, an improved version, was a considerable commercial success and applied to many existing and new civilian and military truck types.
The armoured vehicle projects had the designation Pantrado in common, a contraction of the Dutch word Pantserwagen (armoured car), and Trado.
The Trado III suspension could be fitted with a track on the lines of the Kégresse track, changing a vehicle into a half-track.
The first project, the Pantrado 1, envisaged a very long type with a good trench-crossing capability, brought about by applying the principle of the articulated vehicle: it was to consist of two fully tracked truck hulls attached back to back, connected by a large horizontal articulated cylinder. The full track was to be achieved by extending the track over the rubber-tired front wheels. The cylinder could be split, creating two tanks, each with the engine in front and the fighting room, crowned by a gun turret, at the back.
The second project, the Pantrado 2, was in the form of a single half-track.
The third armoured project, called the M39 Pantserwagen, or Pantrado 3, dispensed with the track option entirely and was a pure armoured car. In view of the intended reconnaissance role of the vehicles to be procured, the Royal Netherlands Army was only interested in this third type.
In the autumn of 1937, the army ordered a single prototype to be built; Van Doorne and Van der Trappen had indicated this could be finished quickly as they had already prepared the manufacture of a demonstrator vehicle. The claim to superiority to British design was based on the use of a welded monocoque construction combined with a consistent use of the sloped armour principle, which was predicted to lead to a much improved weight-efficiency.
This type did thus not utilise an existing truck chassis, as was common for contemporary armoured cars.
A bogie is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transport. A bogie may remain normally attached or be quickly detachable ; it may contain a suspension within it, or be solid and in turn be suspended ; it may be mounted on a swivel, as traditionally on a railway carriage or locomotive, additionally jointed and sprung, or held in place by other means.
DAF Trucks is a Dutch truck manufacturing company and a division of Paccar. DAF originally stood for van Doorne's Aanhangwagen Fabriek. Its headquarters and main plant are in Eindhoven. Cabs and axle assemblies are produced at its Westerlo plant in Belgium. Some of the truck models sold with the DAF brand are designed and built by Leyland Trucks at its Leyland plant in the United Kingdom.
An amphibious vehicle, is a vehicle that is a means of transport viable on land as well as on or under water. Amphibious vehicles include amphibious bicycles, ATVs, cars, buses, trucks, railway vehicles, combat vehicles and hovercraft.
Steering is a system of components, linkages, and other parts that allows a driver to control the direction of a vehicle.
Suspension is the system of tires, tire air, springs, shock absorbers and linkages that connects a vehicle to its wheels and allows relative motion between the two. Suspension systems must support both road holding/handling and ride quality, which are at odds with each other. The tuning of suspensions involves finding the right compromise. It is important for the suspension to keep the road wheel in contact with the road surface as much as possible, because all the road or ground forces acting on the vehicle do so through the contact patches of the tires. The suspension also protects the vehicle itself and any cargo or luggage from damage and wear. The design of front and rear suspension of a car may be different.
Variomatic is the continuously variable transmission (CVT) of the Dutch car manufacturer DAF, originally developed by Hub van Doorne. It is a stepless, fully-automatic transmission, consisting of a V-shaped drive-belt, and two pulleys, each of two cones, whose effective diameter can be changed so that the "V" belt runs nearer the spindle or nearer the rim, depending on the separation of the cones. These are synchronized so that the belt always remains at the same optimal tension.
Horstmann suspension, also known as Horstman, Vickers-Horstman and rarely Slow Motion, is a type of tracked suspension devised by British tank designer John Carden and worked into a production design by engineer Sidney Horstmann.
The Schofield tank, named after its designer, was a New Zealand tank design of the Second World War. Developed in 1940 when it seemed that the Pacific War might reach New Zealand and with little likelihood of weapons coming from Britain, it did not enter service. It was designed to run on either tracks or wheels.
The Vickers Medium Mark I was a British tank of the Inter-war period built by Vickers from 1924.
A magnetic track brake is a brake for rail vehicles. It consists of brake magnets, pole shoes, a suspension, a power transmission and, in the case of mainline railroads, a track rod. When current flows through the magnet coil, the magnet is attracted to the rail, which presses the pole shoes against the rail, thereby decelerating the vehicle.
The Renault UE Chenillette is a light tracked armoured carrier and prime mover produced by France between 1932 and 1940.
The rocker-bogie system is the suspension arrangement developed in 1988 for use in NASA's Mars rover Sojourner, and which has since become NASA's favored design for rovers. It has been used in the 2003 Mars Exploration Rover mission robots Spirit and Opportunity, on the 2012 Mars Science Laboratory (MSL) mission's rover Curiosity, and the Mars 2020 rover Perseverance.
A wheelset is a pair of railroad vehicle wheels mounted rigidly on an axle such that both wheels rotate in unison. Wheelsets are often mounted in a bogie – a pivoted frame assembly holding at least two wheelsets – at each end of the vehicle. Most modern freight cars and passenger cars have bogies each with two wheelsets, but three wheelsets are used in bogies of freight cars that carry heavy loads, and three-wheelset bogies are under some passenger cars. Four-wheeled goods wagons that were once near-universal in Europe and Great Britain and their colonies have only two wheelsets; in recent decades such vehicles have become less common as trainloads have become heavier.
An articulated hauler, articulated dump truck (ADT), or sometimes a dump hauler, is a very large heavy-duty type of dump truck used to transport loads over rough terrain, and occasionally on public roads. The vehicle usually has all-wheel drive and consists of two basic units: the front section, generally called the tractor, and the rear section that contains the dump body, called the hauler or trailer section. Steering is made by pivoting the front in relation to the back by hydraulic rams. This way, all wheels follow the same path, making it an excellent off-road vehicle.
The Pantserwagen M39 or DAF Pantrado 3 was a Dutch 6×4 armoured car produced in the late thirties for the Royal Dutch Army.
Eight-wheel drive, often notated as 8WD or 8×8, is a drivetrain configuration that allows all eight wheels of an eight-wheeled vehicle to be drive wheels simultaneously. Unlike four-wheel drive drivetrains, the configuration is largely confined to heavy-duty off-road and military vehicles, such as armored vehicles, tractor units or all-terrain vehicles such as the Argo Avenger.
Hubert Jozef ("Hub") van Doorne was the founder of Van Doorne's Aanhangwagenfabriek and of Van Doorne's Automobielfabriek known as DAF, together with his brother Willem (Wim) van Doorne.
An H-drive drivetrain is a system used for heavy off-road vehicles with 6×6 or 8×8 drive to supply power to each wheel station.
The Wilton-Fijenoord Pantserwagen was a armoured car that was built by Wilton-Fijenoord in the Netherlands for the Royal Netherlands East Indies Army.