The gear mechanism in mountain bikes is no longer simple and it is getting more advanced and complex with some bikes having gear ratios of more than 27. To achieve this mountain bikes contain three varied size sprockets in the front wheel and nice in the rear wheel.
The purpose of having so many gear ratios is to ensure that the biker doesn't feel a change in pedal rotation and pedal shift remains the same irrespective of the terrain and slope. It is easy to explain by imagining about a bike that has one gear only. The pedal rotation will be in synch with the rear wheel rotation.
For a rear wheel of 26 inches in diameter with a single gear, a complete rotation of pedal will result in the forward movement of bike up to 81.6 inches. At a speed of 50 RPM, the bicycle will cover 340 feet in 60 seconds. You will be surprised to know that the speed of bike will be equivalent to walking speed which is 3.8 MPH.
Speedier bikes require different gear ratios. If you are going down the slope at 25 MPH having 50 RPM at pedals, then you will require 5.6:1 gear ratio. Therefore, a mountain bike that has different gear ratios will allow you to have 50 RPM and won't let you worry about the speed of your bike.
Some bikers prefer front sprocket for riding on slopes. You should keep in mind that front sprocket is not easy to shift if there is heavy load. Changing gears on the real wheel is a lot simpler and effective process.
If you peddling your way up on a hill, you will be better off using smallest sprocket on the front wheel and changing among nine rear gears. Better gear ratio on the real wheel sprocket is much better option.
In nutshell, the relevance of gears in a mountain bike is too high to ignore. These gears help you in achieving your desired speeds. In the absence of these gears your target speed and effortless peddling will remain a distant dream.
The single purpose of all these gears is to make you ride your bike at higher speeds and minimum effort.
The purpose of having so many gear ratios is to ensure that the biker doesn't feel a change in pedal rotation and pedal shift remains the same irrespective of the terrain and slope. It is easy to explain by imagining about a bike that has one gear only. The pedal rotation will be in synch with the rear wheel rotation.
For a rear wheel of 26 inches in diameter with a single gear, a complete rotation of pedal will result in the forward movement of bike up to 81.6 inches. At a speed of 50 RPM, the bicycle will cover 340 feet in 60 seconds. You will be surprised to know that the speed of bike will be equivalent to walking speed which is 3.8 MPH.
Speedier bikes require different gear ratios. If you are going down the slope at 25 MPH having 50 RPM at pedals, then you will require 5.6:1 gear ratio. Therefore, a mountain bike that has different gear ratios will allow you to have 50 RPM and won't let you worry about the speed of your bike.
Some bikers prefer front sprocket for riding on slopes. You should keep in mind that front sprocket is not easy to shift if there is heavy load. Changing gears on the real wheel is a lot simpler and effective process.
If you peddling your way up on a hill, you will be better off using smallest sprocket on the front wheel and changing among nine rear gears. Better gear ratio on the real wheel sprocket is much better option.
In nutshell, the relevance of gears in a mountain bike is too high to ignore. These gears help you in achieving your desired speeds. In the absence of these gears your target speed and effortless peddling will remain a distant dream.
The single purpose of all these gears is to make you ride your bike at higher speeds and minimum effort.
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