Racing Car News

Archive for June, 2010

Used Car Auction

The used car auction is very much in vogue these days because of the good quality of product available at a very reasonable price. Generally the automobiles available in the market are directly from the retailer or from a seller who has used the car for long. In both the cases it is difficult to get a good deal. When the car is being bought from the retailer it commands a very high price. While when it is bought from any individual seller it is generally not in a very good condition to use. Thus the Used Car Auction has been successful in giving the customers value for their money. The used car auction has been made possible from the cozy internment of home these days. Thus there are several auction portals offering the used cars for auction. Online used car auction can be another major source of taking repossession of a used car. The online used car auction can be a good vehicle to sell off the old car. They provide several services to the sellers regarding this.
How to proceed
The portals offering the Used Car Auction generally reserve a price with themselves from which the bidding starts. Sometimes they bid on their own to retain a particular automobile to sell it in the next season. The buyer and the seller both have to be aware of this particular price. It is advisable to place the initial bidding amount considering the price reserved with the portals. The sellers also have to place their products in harmony with the price that is being reserved by the portals. Once this price is definite one can proceed further by scrutinizing the checklist given by the portals. This checklist generally contains the information regarding the type of the car and its other technical details. These checklists also contain the initial bids for each of the car. The sellers can advertise their cars through these portals. There are sections in the portals to upload the details regarding a car which has to be sold. The portals also help the sellers in getting the best price for their used car.
Pros and cons of online used car auction
Through the online used car auction one can get several options regarding the type of car. It can be done from the internment of the home and the mode of payment for these auctions is also easy. However the car cannot be seen physically until it is being bought. Thus there are chances that it does reflect the exact individuality being mentioned in the checklist.

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Understanding Car Speakers

Car owners need to have good quality speakers for achieving that perfect sound. Finding the right type of speakers will not only enable car owners save money but they will also improve the cars sound system. Therefore it is important for car owners to know the various car speakers available. The first type of car speakers that are available is the coaxial or multielement speakers. These are the most widely used speakers and are preinstalled during the production of the car. The design of the coaxial speakers includes tweeters and woofers that are combined in the same speaker unit. The cone shaped woofer has the capability of generating low range frequencies while the tweeters are able to produce very high range frequencies.

In addition the coaxial speakers are usually described as either twoway speakers threeway speakers and so on. It is very easy to know whether the speaker is a two way or a four way. Twoway speakers contain one tweeter and a woofer while four way speakers have one woofer and three tweeters. Tweeters in a speaker are a vital requirement. The reason for this is that car music systems play compact disks at frequencies of 2020000 Hz. However speakers that have no tweeters can only pick up sounds at frequencies of 1510000 Hz. Because of this shortfall the system will try to reproduce the missing frequency resulting to sound distortions and low sound quality.

The second type of speakers is the component speaker system. These speakers are made up of midrange woofers crossover filter networks and tweeters that are separated form the main speaker. Again with the component speakers the tweeters produce high range frequencies while the woofers produce low frequencies. The component speakers are designed to produce certain range of frequencies. To be able to produce superb audio quality the speakers are used with other component speakers. The component speakers have what are known as series of frequency filters referred to as crossover filters.

The use of the crossover filters enables the component speaker to produce high quality sound without any distortions. The crossover filters are able to prevent sound distortions by transferring only audio signals which the components can be able to handle. For instance the crossover filter directs signals with high frequencies between 10000 to 20000 Hz to the tweeters while low frequency signals of between 2510000 are filtered to the woofers. Another type of car stereo speakers are the sub woofers which can reproduce low sound frequencies that are below or closer to 100 Hz. Sub woofers are normally speakers ranging fromeight inches or bigger but because of their bigger size they require additional amplifier power than coaxial or component speakers.

To be able to effectively produce low range sound frequencies subwoofers must be placed in an enclosure. Finally when deciding which speaker to buy take into consideration the type of material used in making the tweeter or the woofer. For the speaker to last long the material used should be of high quality. Understanding the types of speakers enables the car owner to buy the best possible car speaker suitable for the car.

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Understanding Basic Car Wheel Drive Systems

A wheel drive system is a combination of simple components that helps and supports the movement of the wheels in a car. The first wheel drive system is as old as the first car itself. Over the years as cars have evolved into more complex machines so have wheel drive systems grown in sophistication to the point of being identified as an individual science in car engineering. This has resulted in each unique type of wheel drive system being identified by a different name and classification based on its inherent characteristics.

The most basic such classification of car wheel drive systems is based on which set of wheels front or rear it drives. As confusing as the terms front wheel drive and rear wheel drive in a car may seem the basic concept behind them is pretty simple.

Here is a brief introduction of the two types of wheel drive systems:

Front Wheel Drive FWD

In a front wheel drive car the transmission system is connected only to the two front wheels of the car. All the power generated by the engine is used to drive only these two front wheels. The rear wheels act as dummies whereby their only purpose is to support the rear portion of the car and they just roll around to keep the car moving forward as the engine forces the front wheels to rotate. In a car with FWD the entire drive mechanism including the engine and car transmission systems is located to the front of the car. Most cars in India come with a front wheel drive configuration due to their simplicity in structure and low cost of assembly.

Rear Wheel Drive RWD

A rear wheel drive system is the opposite of front wheel drive. In this type of drive system the engine and transmission system drive the two rear wheels of the car instead of the two front wheels. So when a driver presses the accelerator the rear wheels are made to move by using engine power. Except for a few cars the engine in a rear wheel drive car is located to the front of the car too but the transmission system is linked to the rear wheels. This type of drive system is mostly used in racing cars and performance cars it can accelerate better on dry roads.

As can be clearly interpreted each of the above wheel drive systems has advantages and disadvantages of its own. There have been a lot of debates as to which is better. Not to say that they are not existent now but rear wheel drive cars were more common in the past. By the early 1980s front wheel drive cars started gaining popularity and soon found themselves on most passenger cars. Today the car model lineup of many car manufacturers includes several with FWD and a few with RWD.

Here are some of the advantages and disadvantages of each drive system:

Advantages of Front Wheel Drive over Rear Wheel Drive

FWDs are not very expensive and can be easily installed in a car but in case of rear wheel drive the production and assembly is expensive.

Designers tasked with upgrading a car model can easily locate other parts beneath the car such as brake lines fuel lines and exhaust system whereas the rear wheel drive has a complex structure.

The weight of a FWD configuration is comparatively less than a RWD. Reducing a car’s weight benefits fuel economy and enables better braking.

Provides better road grip than an RWD on slippery roads.

Cabin space and trunk space in the car are relatively more as no large mechanical parts are links to the rear wheels.

Advantages of Rear Wheel Drive over Front Wheel Drive

In a RWD system as some of the mechanical parts are removed from the front of the car and moved to the rear the weight distribution is better between the two ends of the car. This enables improved handling. FWD provides comparatively less handling.

Making use of the rear tires for acceleration and traction takes load off the front and drivers accelerating around a corner get better side grip. In case of FWD the road grip of the rear tyres is reduced.

Repair costs are much cheaper when compared with front wheel drive system.

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