2007 mountain bikes

It was a long time, since the" 10-speed "bike was the ne plus ultra of the Bike sophistication when it came before. In these days, especially in mountain bikes, you'll also find up to 27 speeds.

What are all these gears in the amount of? Quite simply, it allows you to pedal at the same rate - regardless of whether you go uphill, downhill or cross country.

But the main reason why mountain bikes have so many gears, it is you in climbing up the mountains!

The most important thing to remember when the shift is that you must always shift during pedaling, otherwise you can strip in front.

Derailleur
The gears are divided into two parts. There are three chainrings on the front, the left gear shifter. That is the reason why there are 3 numbers to choose from this gear shifter - to choose which of the three rings in front of your chain. The "derailleur" in the gear shifter moves the chain from one ring to another.

When the chain on the smallest of the three chainrings (1), driving is very simple. This is called the granny gear. The second ring-chain is responsible for the level, off-road driving (2), and the third, the biggest chain or ring, is good for driving on asphalt.

So, if you have only these three courses, you can do. But with the right hand shifter, you can take advantage of the steps of gear available.

Derailleur
The backside is a Kettering COG set with seven, eight or nine tooth wheel, depending on how many "" Speed "" You have (21, 24 or 27). Each tooth is of a different size, and the smaller wheels allows you to pedal very, very simple - but not very fast, while the larger wheels allow you to go further with each stroke of the pedal after.

The best thing to do is practice, practice, practice. Take your bike on a parking lot or somewhere where you can not worry about the people, and the shift from one gear to another, for each and how easy or difficult it is to pedal while in gear .

People new to cycling could be more careful with the gear shift. The shift was always a bit problematic, while the "old days" - when only a pair of center mounted levels to work with, but now gear shifter - the twist - are so easy to use, that is no reason There, too afraid of the shift. Again, as long as you are when you move, the gearbox will not hurt.

Alastair Hamilton is a consultant who writes on many consumer topics such as bicycles for http://www.bikecyclingreviews.com. You can find more information and resources on mountain bike reviews at his website.