Monday, April 23, 2007

Gears Gear-up Your Machines


Gears are one of the most basic transmission devices. You have heard about gears in cars, bicycles, and many types of machines. If you are not a mechanical engineer, you will be amazed by the extent to which gears affect our daily life. As any student of mechanical engineering will tell you, gears are at the heart of any machinery. This is a basic article to tell you what gears actually do.

There are two basic functions that gears perform.

First, they make power travel from one part of a machine to another. For instance, when you are pedaling a bicycle, it is the arrangement of gears that causes the transmission of power from your leg movement to the rotation of the wheels. Likewise with most other forms of gear based machines.

Second, gears act as reducers. Thereby, they reduce the output speed but increase the torque. To understand this, once again consider the example of a bicycle. If you are climbing up a slope, you move to a smaller gear. This reduces the speed at which the cycle moves, but it increases the power generated by the rotation of the wheels. Hence, on the whole cycling-up the slope becomes easier. A similar example could be considered for a stick-shift car, whereby, you climb up steep slopes in a lower gear.

And to think that in their simplest form, gears are nothing but an interlinked pair of toothed wheels. But, gears can get more complicated. For instance, we could have a chain of gears when gear-one rotates gear-two, which rotates gear-three and so on. Likewise, we could have a situation where one of the toothed elements is a cylinder, while the other is a disc. Also, again going back to the example of the cycle, we could have the two gears separated by some distance, but interlinked by a chain, or other transmitting device.

Friday, April 20, 2007

There are a variety of 6 ways that you can save money.


In the past months we have seen the price of gasoline soar higher than ever before, and this can be hard on people who have a budget that is tight. Even though gas prices have come down a slight bit, you still will want to do everything you possibly can to save on the money you have to pay out for gas. There are a variety of ways that you can save gas, and save money.

Tip#1 - Start Carpooling

Carpooling is a great idea for fellow students and fellow employees both. If you can find people that are going to the same place you are you can save gas by riding together. It may be a good idea to trade off on who is driving from week to week so no one person gets stuck having to drive all the time. If you have to take your children to school or other functions you can also work on trading off with your friends and neighbors to take them there.

Tip#2 - Public Transportation

If it is possible you can take public transportation to work instead of driving your car. Not only will this save you money on gas, but you will also be able to relax and not worry about having to drive through all that rush hour traffic. You may even be able to fit in a quick nap on your way to work or on your way home.

Tip#3 - Price Shop

Often it may be so convenient to buy your gas at the small gas station just up the road, but to save some money on gas you may want to check the prices at other gas stations that are nearby as well. Even if the difference is only a few cents, after putting hundreds of gallons of gas in you vehicle each year, those few cents are going to add up to quite a sum of money.

Tip#4 - Get Moving

You can save some money on gas if you start walking to where you are going, or you can ride a bike as well. You will not have to worry about paying to park your car, and the exercise will be great for you body. If you are walking or biking you will not have to worry about those huge traffic jams either.

Tip#5 - Take Care of Your Car

It is always important to take care of your car so it gets the best gas mileage possible. Also be sure to plan where you are going before you go so you will not have to backtrack and waste gas. If you can, you should use your air conditioning as little as possible because using it takes more gas. Roll down your windows and you will use less gas.

Tip#6 - Check your Tires

It is important that you check the air pressure in your tires as often as possible. If your tires are too low, or the pressure in them is unequal it can make your car burn more gas. You should also be careful how you drive. If you take off from every red light very fast you are going to burn more fuel, so it is best to take off a little slower.

These are a few tips that can help the money conscious person to save money on gas. Even as gas prices drop, these tips can still help you to save more money. Conservation is important, so take advantage of these tips, save money, and save gas.


About The Author

Jackson Porter is a staff writer at http://www.automobileenthusiast.com and is an occasional contributor to several other websites, including http://www.environmental-central.com.