Things you should know about GPS Systems

By John Richards

GPS (Global Positioning Systems) have really improved since they were introduced. It's difficult for many to see today's product and realize exactly how far these devices have come since they were developed for the U. S. Armed Forces. The thing to keep in mind and remember is that they still have a long way to go. These devices are not at all infallible and still have some problem areas that prohibit us from dumping compass and maps all together.

One thing to keep in mind is that there are almost invariably problems of some sort with all electronic gadgets. And it's doubly true when it comes to equipment that is run by software. If you're not sure about this, check out a computer that is run by Windows? We often find ourselves stymied by the limitations of the software we are using.

And the same is true when it comes to software driven GPS systems and GPS devices. This fact alone makes them a little unreliable. For those times when reliability isn't at its best keep in mind that for the most part the system works well. It's just difficult when the times you need it to work well are the times when it is malfunctioning. The good news is that the units themselves are often quite resilient and even able to withstand the manhandling a typical rough and tumble two year old can dish out.

Another thing to keep in mind with your GPS is that its reliability can suffer whenever it doesn't have a clear view of the sky. For that reason there may be times when you aren't able to get a clear signal. Tunnels below rivers and mountains are a good example of one of those times. It's not just about one signal, the device must be able to find three satellites orbiting way above the earth at the very least in order to be 'seen'. And usually a fourth satellite is needed for verification purposes. This means that in some situations where you might have a clear view of the sky, you may not be in a position where all four satellites have a clear view of you and more importantly your device.

It is also important to keep in mind that GPS technology isn't meant to replace the use of maps or of common sense when driving. You can only store so much information on a GPS device and roads are constantly being built, changes, constructed, improved, and moved. For that reason alone it is nearly impossible to guarantee that any device will contain 100% accurate information at all times. You should however, choose a device or auto navigation systems that allows frequent and simple upgrades to the maps provided. Updating regularly and immediately prior to any large trips will go a long way towards saving some serious hair pulling while you travel.

GPS and auto navigation systems are still miles better than trying to read old maps, which might be out of date, for most of us. Despite that, when you go into a shope to buy one, it is always a good idea to have all the facts to hand rather than thinking you've discovered the next best thing to sliced bread that it doesn't do exactly waht you thought it would. This technology is wonderful and affords many benefits to those who are willing and able to make use of it. It will never replace common sense or map reading skills however and it should only be used to support your own abilities.

About The Author

Don't let rising costs put you off the road. Find hundreds of money-saving auto tips for buying and running your car at http://www.autotips.john-richards.com

Ten Top Car Tyre Tips

By Websitepa

Car tyres are the only point of contact between a vehicle and the road. Keeping them in good condition is essential for safe driving and achieving the optimum performance of your car.

Here a ten car tyre tips:

1. Regularly check car tyre pressures. By spending an extra 5 minutes at the petrol station checking your car tyres are inflated to the manufacturer's recommended pressure, fuel economy can be improved by 10%.

A car tyre that is inflated below its recommended pressure will wear faster because of its higher operating temperature and the extra flexing of the rubber. This causes deterioration of the tyre casing and rapid wear of the tread shoulders.

Over inflation can also increase wear due to the decreased size of the contact area between the car tyre and the road. It accelerates the wear in the centre of the tread, an area important for protecting the tyre against impact damage.

2. Always carry a spare. It is not a legal requirement but you'll be thankful you have one when a tyre gets a puncture in a remote location. If using a compact spare tyre remember not to exceed 50 mph and replace it at the earliest opportunity.

3. Check the car tyres for any unusual bulges or lumps as these are often a sign of internal damage. Inspect the tread and sidewall rubber for any signs of cracking as this can cause a tyre blow-out.

4. Keep the tyre valves clean and always remember to replace the dust cap.

5. Avoid driving over of potholes in the road. The extra flexing of the rubber will hasten the tyres deterioration.

6. Remove any stones and other objects embedded in a car tyre's tread. If you find a nail do not remove it as the tyre will rapidly deflate. Instead take the tyre to a specialist who may be able to repair the puncture.

7. Keep the car in a garage if possible. Weather exposure causes crazing and cracking on the car tyres of vehicles kept outside.

8. Take care when using a pressure washer as it can cause damage to a tyre's sidewall. Only use at a safe distance.

9. Try to replace all four tyres at the same time. If this is not possible replace either the two front or the two back tyres together. It will prevent uneven wear which can affect the vehicle's handling.

10. Consult a car tyre specialist before replacing a tyre. They will advise on the right choice of tyre according to your car's make, your budget and your driving circumstances.

About the Author

Get an instant online tyre quote now or contact your nearest fitting centre to see how much you can save with Merityre car tyres specialist!

Gas Mileage Increase Tip - Spark Plug Performance

By BryanAlan

Oil prices continue to soar to record levels. In return, gas prices, coupled with the major housing slowdown, is turning the economy on its head. With national averages now above four dollars per gallon, many motorists are looking for practical ways to increase mileage. To increase mileage, there indeed are several practical and inexpensive tips you can take - as well as some more drastic ones if you dare!

First, having basic knowledge of how your engine works will help understand what changes can be made. An automobile engine takes minute amounts of fuel and air into each piston chamber. This mixture is then pressurized by the piston moving upward. This pressurized mixture explodes through a spark transmitted by the spark plug.

After this spark is introduced, the mixture "explodes" and the resulting expanded gaseous state is the power used to operate your vehicle. During normal operation, an engine will repeat this process thousands of times every minute (thus - the term RPM's , or Revolutions Per Minute). Each cylinder in your engine produces this exact same process over and over again - for example if your car has a V-6 engine, there are 6 chambers doing this at the same time.

Making this process of energy transfer work better is a key to increase mileage. Lets discuss the role your spark plug plays specifically. The amount of spark the plug is able to send into the chamber is directly related to the quality of the plug itself. The more air tight the seals on the plug, and the higher the platinum level in the plug, the more efficient the charge sent will be. A more efficient charge means less additional charge is needed to get the same output level. Thus, less RPM's and less fuel is used.

Having clean, high quality spark plugs can increase the efficiency of your engines performance, and in return, increase mileage. Many spark plugs can increase mileage by upwards of 2-5%. While this may not sound like a huge increase, changing your spark plugs (at a cost of roughly $4 per plug) will pay for themselves within that month for an average driver.

Article Provided By: My Articles Directory

About the Author

Get additional tips and advice on how to increase mileage, be sure to visit savefuelshop.com. Great content, product reviews, and other ways to increase mileage available there. Get a totally unique version of this article from our article submission service

History Of The Mercedes

By Greg Chapman

We associate the name of Mercedes with wealth or car quality. What many of us don’t know is that the car itself dates back to over a hundred years.

To tell the story of Mercedes brand cars, you first must know the characters involved with the company. Those characters are Gottlieb Daimler and Carl Benz. Both men were born only 60 miles apart in southern Germany. Daimler was born March 17, 1834. A decade later, on November 25, Carl Benz was born. Although they grew up with little in common, machines from an early age fascinated both boys. Because their approach to building cars was quite different, it is doubtful, though, that they met or even knew what the other was doing.

In 1886, Carl Benz built a motorized tricycle. His first four-wheeler, the Victoria, was built in 1893. The first production car was the 1894 Benz Velo, which participated in the first recorded car race, the Paris-Rouen race. In 1895, Benz built his first truck.

In 1886, Gottlieb Daimler literally built a horseless carriage. Although we think of the car as being German, its history dates far back into America as well. In 1888 Daimler made a business deal with William Steinway (of piano fame) to produce Daimler's products in the US. From 1904 until a fire in 1907, Steinway produced Mercedes passenger cars, Daimler's light trucks, and his engines on Long Island.

Ironically, history says Daimler, generally considered to be the father of modern automobiles, never liked to drive. On March 6, 1990, Daimler died, leaving control of his company to his chief engineer Wilhelm Mayback. By November 22 of that year, Daimler-Motoren-Gesellschat had produced a special car for Emil Jellinek. Jellinek named the car after his ten-year-old daughter Mercedes. This car was lighter and smaller than the standard car of its day and because of this was able to reach a top speed of 55 miles per hour.

Up until 1908, Daimler had overshadowed Benz in racing endeavors. At the 1908 French Grand Prix, Benz took second and third place behind Lautenschlager driving a Mercedes.

At the beginning of the First World War, both factories were converted into production sites for war materials, although both resumed producing cars after the war. Social unrest and a falling economy characterized post-war Germany. Little or no fuel for cars and a 15% luxury tax made automobile production increasingly disastrous.

The German economy continued to worse and a new Benz automobile eventually cost 25 million marks. Although nearly 15 million cars were registered in the world in 1923, over 80% of them were registered in the US and over 1/2 were Fords. The Mercedes was too expensive.

In 1924, from sheer economic necessity, Benz and DMG signed an "Agreement of Mutual Interest." Although both companies retained their identities, the agreement was valid until the year 2000. The two companies merged with relative ease on June 28, 1926.

A new insignia was needed to represent the merger. The design was a three-pointed star wreathed with laurel. The word "Mercedes" was at the top and the word "Benz" was at the bottom. The merger did the new company well. Production of Mercedes-Benz rose to 7,918 Mercedes-Benz automobiles in 1927. The Mercedes-Benz diesel truck was put into production in 1927, also.

The first two automobiles to sport the Mercedes-Benz name were the Stuttgart and the Mannheim. Then in 1928 the Mercedes SS was introduced by Mercedes-Benz. This graceful body was made possible by a hood line that barely cleared the engine.

Mercedes-Benz launched their biggest and most prestigious car to date in 1930. The 770 Grosser was powered by an 8 cylinder, 7.6 liter engine. A car for the truly wealthy of the world, it was quite an automobile for showing off in a world economy still reeling from the Wall Street Crash of 1929.

The cars of the 1930s produced great racing success for Mercedes-Benz. The silver metal bodywork gave rise to the name Silver Arrows when the W25 racer (of Rudolph Caracciola fame) had the white paint removed to lower its weight.

W125 (200 mph top speed) won seven out of thirteen races in 1937 followed by the successful W154. In 1939 Mercedes-Benz built a small V8 races specifically to win the Tripoli GP. It did win!

The Mercedes-Benz 170V gave Mercedes the capability of surviving and then recovering from WW II.

Today the Mercedes of course is still being built and is still revered as a car of quality.

About The Author

Greg Chapman of Greg Chapman Motors is a knowledgeable and leading provider of used cars, trucks, and SUV’s. Since 1959, Chapman motors has supplied reliable used cars in Austin and the surrounding area and is known as one of the bad credit car dealers in Austin. For more information please visit http://www.gregchapmanmotors.com.