A term which is common in the world of Locomotives is "Gear Ratio".
This blog is dedicated to explore the term "Gear Ratio" in detail.
What is Gear Ratio?
Ans: The gear ratio of a gear train, also known as its speed ratio, is the ratio of the angular velocity of the input gear to the angular velocity of the output gear.The gear...
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ratio can be calculated directly from the numbers of teeth on the gears in the gear train. The torque ratio of the gear train, also known as its mechanical advantage, is determined by the gear ratio.The speed ratio and mechanical advantage are defined so they yield the same number in an ideal linkage.
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How to determine Gear Ratio?
Please refer the following link for determining Gear Ratio by following 10 easy steps with pictures
click here
How Gear Ratios Work?
Please refer the following Link to see the "Detailed Explanation" about the Functionality of Gear Ratio by Marshall Brain
click here
For the information of the viewers the "Gear Ratio" of the two most popular passenger locomotives of IR are as follows
WAP 4: 23:58
WAP 7: 72:20
Please see the "Technical Specifications" of the "Source Links" given below:
click here
click here
Attached Image:
Gear Of WAP 7 in front of it's Driver Display Unit(I marked the Gears by editing the Picture in ms paint on request of the viewers of IRI to attach the images of Gears of Loco with this blog[Please see Re# 1392829-2])
Driver Display Unit of WAP 7 made by Advanced Rail Controls Bangalore
Pic Courtesy of above Pics: Mr Sundar Mukherjee , IRFCA Member and Rail Enthusiast
Image Link of both the images: click here