What is the function of a torsion bar?

What is the function of a torsion bar?

In automobiles a torsion bar is a long spring-steel element with one end held rigidly to the frame and the other end twisted by a lever connected to the axle. It thus provides a spring action for the vehicle. See also spring.

What are the advantages of a torsion bar?

The main advantages of a torsion bar suspension are soft ride due to elasticity of the bar, durability, easy adjustability of ride height, and small profile along the width of the vehicle. It takes up less of the vehicle’s interior volume than coil springs.

Do torsion bars get weak?

Any metal object can succumb to metal fatigue over time, especially if under constant, heavy loads. Pay special attention when driving over speed bumps. If you hear a bang, then the torsion bar has grown too soft and allowed some suspension parts to come into contact. Any worn out torsion bar must be replaced.

Are torsion bars pre stressed?

Re-stressing allows bars to have greater elastic twist angle and hence more wheel travel. During pre-stressing the bars are twisted within the plastic shear zone over a specific angle, unloaded and repeated two more times. …

What is torsion bar explain utility and importance in a suspension?

A torsion bar is a bar attached to a vehicle’s suspension that absorbs energy by twisting. Torsion bar front suspension systems are often used on four-wheel-drive trucks. The car’s basic torsion bar suspension was lowered to improve handling and a front anti-sway bar fitted.

Why are torsion bars bad?

Our favorite feature of torsion bars is that they are super-simple to adjust for ride height. The downside is that there isn’t that much adjustment available in stock guise and when the torsion bars are set to maximum height, the truck’s ride tends to turn horribly harsh.

Can you break a torsion bar?

Subject: Re: what happens when you break a torsion bar? Highly unlikely you break 2 bars at once. Unless someone has hacked them up with vice-grips at one time perhaps. When one breaks you will a loud bang and the left or right front will sit very low and ride on the bumpstops.

How does torsion beam suspension work?

How does torsion-beam suspension work? It is basically as simple as it sounds: two wheels are attached to the ends of a bar, which twists slightly when under load. That design gives the wheels a certain degree of independence, but not entirely because they are still attached together by that beam.

How do torsion key lifts work?

The hexagon hole in the lever key fits snug to the location on the torsion bar where it is designed to slide onto and hold snug to the bar with no gaps or “slop”. This is the point where the torsion key applies adjustable force to the torsion bar and ultimately rotates the torsion bar and providing “lift”.

What is the efficiency of a torsion bar spring?

The efficiency of a torsion bar (crudely energy stored per unit weight) is the same as for a coil spring (a coil spring is actually a torsion spring). It’s a lot better than a leaf spring. A curious selection of vehicles has used them over the years, including the Ranger , tanks, and sports cars.

What is a torsion bar on a car?

List Your Business. The torsion bar is basically a length of metal rod anchored at one end to the car body and at the other end to the suspension lower link. As the wheel passes over a bump the bar twists. It returns to its original position when the bump is passed and restores the car to its normal drive height.

What are garage door torsion springs and how do they work?

Torsion springs store energy by using a rotating or twisting motion. The advantage of garage door torsion springs over conventional springs is that they can store lot more energy because they are made from a denser material. What do they do? Torsion springs are normally mounted horizontally above the opening of your garage door.

Why no torsion bars on the 72?

The torsion bars made the 72 hard to set up as did the rising rate linkages which pulled on the bars. It was the desire for rising rate which helped decide to use torsion bars. IIRC Lotus developed the first fully independent set up platforms to use in-field to get all the ride height, bar rate and linkage angle of attack correct.