Why are they called traction engines?

A traction engine is a steam-powered tractor used to move heavy loads on roads, plough ground or to provide power at a chosen location. The name derives from the Latin tractus, meaning ‘drawn’, since the prime function of any traction engine is to draw a load behind it.

How fast can traction engines go?

Impressively – and imperatively, for such a large vehicle – the road locomotive featured a power steering mechanism to turn its five-foot-tall front wheels. In low gear, it could reach a speed of 2.64 MPH; in high, 5.69 MPH.

How big is a traction engine?

Miniatures have become popular with individuals who do not have the facilities to store, transport or work on a full-size traction engine. 4 inches to foot (4″ scale) is a common scale and usually weigh between 400kg and 1000kg, making them perfect for storage in the garage and transporting behind a car/in a van.

How did steam locomotives not run out of water?

During the very early days of steam locomotives, water stops were necessary every 7–10 miles (11-16 km) and consumed much travel time. With the introduction of tenders (a special car containing water and fuel), trains could run 100–150 miles (160–240 km) without a refill.

What is a cat F licence?

If you pass this test, you are issued with a category F licence. This allows you to drive agricultural tractors and trailers only. It will not cover any other type of vehicle.

What pressure do steam engines run at?

200-300 PSI
The essential action of any steam engine, stationary or mobile, is that of steam under pressure (200-300 PSI for most locomotives) entering a cylinder-piston assembly and pushing against the piston as it expands in an effort to reach normal atmospheric pressure.

Can I drive a JCB on a car Licence?

Member. They are taxed as a special machine (or limited use if you only use it round the farm), you can drive it on a normal car licence, not sure if you only have the tractor licence. Diggers drive on the road and work on non agricultural sites on red diesel.

Why do trains have 2 engines?

The Short Answer. Trains have multiple engines to provide more power to pull the train. Each locomotive has a certain amount of pulling power (called “tractive effort”), which is related to how many horsepower the diesel engine in the locomotive has.

Do steam engines need water?

A steam engine requires a combustible fuel and a supply of water. On most steam locomotives the fuel and water are carried in a separate car, the tender, behind the locomotive.

Quels sont les facteurs de différenciation entre la traction et la propulsion?

La traction est donc plus handicapée par rapport à la propulsion qui profite de cet effet vertueux: plus le moteur est puissant, plus la motricité est favorisée sur l’essieu arrière qui peut donc restituer sa puissance aux roues arrières. Les autres facteurs de différenciation :

Quels sont les avantages et les inconvénients de la traction et de la propulsion?

Voici les avantages et inconvénients respectifs de la traction et de la propulsion : Notez enfin que les voitures à traction sont souvent moins sujettes aux pannes car elles sollicitent moins d’éléments mécaniques.

Quels sont les avantages de la traction?

Sur route mouillé ou enneigée, la traction garantie une meilleur tenue de route pour un usage au quotidien et la propulsion est à manier avec grande parcimonie! Sinon c’est le tête à queue garanti car on risque une perte d’adhérence arrière en accélérant trop fort, ce qui fera chasser l’arrière-train.

Quels sont les inconvénients de la propulsion?

Le principal inconvénient de la propulsion est donc la sécurité : en effet, la conduite sur route humide ou enneigée est nettement moins sûre, la voiture est moins stable dans les virages et le risque de tête-à-queue ou de dérapage est plus élevé qu’avec une voiture à traction.