2007-01-02 11:54:27 · 12 answers · asked by ilessthanthreeyou 3 in Cars & Transportation ➔ Other - Cars & Transportation
A roll bar is metal tubing that goes on the inside of a car to reinforce the roof in the event of a roll-over. They are mostly found and installed in Race car applications.
2007-01-02 11:57:38 · answer #1 · answered by Satchmo 4 · 1⤊ 0⤋
Actually, you're asking a question that has two answers. I agree that a "roll bar" is a part of a roll cage (which is important IF you're going to turn your car upside down), but you might also be referring to an "anti-roll" bar, which is part of the front and/or rear suspension on a car.
The purpose of the anti-roll bar (sometimes incorrectly referred to as a "roll" bar), is to keep the car from leaning when you're making a turn. Generally the term "roll bar" does refer to the roll-over protection, but there is also the secondary usage, which I have mentioned.
A good (anti) roll-bar will negate the necessity of a (cahe) roll-bar (since the car probably won't roll over when there is a suspension roll-bar in place). Hope I haven't confused you too much!
2007-01-02 13:05:41 · answer #2 · answered by Kiffin # 1 6 · 0⤊ 0⤋
A roll cage is a specially constructed frame built in or around the cab of a vehicle to protect the occupants from being injured in an accident, particularly in the event of a roll-over. Roll cages extend in front of the driver, next to the A-pillar, to provide as much high-speed protection as possible in a coupé. This is compared to the protection provided in open wheel racing, where a solid shell encases the majority of the driver's body as well as a rollover hoop that extends over the driver's helmet. A roll cage can also do a great deal to stiffen the chassis, which is desirable in racing applications.
A ROLL BAR is a single bar behind the driver that provides moderate roll-over protection. A targa top is a body style that integrates an externally-visible roll bar that a semi-convertible top attaches to. Convertibles have particular concerns for roll-over protection. In most modern convertibles a strong windscreen frame acts as a roll bar.
Roll hoops are essentially two roll bars, one behind the driver and one behind the passenger. Sometimes just a single roll hoop behind the driver is used. Sometimes they are integrated into the design of the body.
A newer form of rollover protect is deployable roll hoops that are normally hidden within the body of a car. When sensors detect an imminent rollover, the roll hoops quickly extend and lock in place. Cars that have a deployable rollover protection system include the Peugeot 307 CC [1], Mercedes-Benz SL 500, and Jaguar XK [2].
2007-01-02 12:06:49 · answer #3 · answered by somebodys_here 2 · 0⤊ 0⤋
Ever seen a jeep with it's top off and seen the big black bar the goes across the top? That's a roll bar. It's in case the car rolls over, it would keep the weight of the car off the passengers.
2007-01-02 11:56:31 · answer #4 · answered by A W 4 · 1⤊ 1⤋
A roll bar is constructed out of 2.5 in.pipe and shaped like the top of your cars roof,so in a roll over the driver hopefully will not be injured.Used in auto races.
2007-01-02 12:00:08 · answer #5 · answered by (A) 7 · 0⤊ 0⤋
a roll bar is a bar that helps u if ur car roll's over.
2007-01-02 11:59:14 · answer #6 · answered by scottyirish 2 · 0⤊ 0⤋
It keeps the roof from coming in on you during a roll over.
2007-01-02 11:57:14 · answer #7 · answered by spudfarmer 3 · 0⤊ 0⤋
its a bar and it goes in all around the back seat and then theres a bar that seperates the back from the front and its mostly for cars that race and stuff and i think its supposed to help if there's an accident
2007-01-02 12:04:22 · answer #8 · answered by T 2 · 0⤊ 0⤋
To keep the roof from crushing you when it rolls over.
2007-01-02 11:57:05 · answer #9 · answered by sixcannonballs 5 · 0⤊ 0⤋
in case your car rolls over you don't get crushed.
2007-01-02 11:56:44 · answer #10 · answered by Doodaa Doodaa 3 · 0⤊ 0⤋