Dual Tires. Triple Tires. Single Tires. Tire types. Tire sizes. Tire pressures. Tractor ballasting. Weight
distribution. Ground Speeds. Implement loads. On and on it goes. Setup of a tractor is a balancing act
between a bewildering array of choices. Correct choices increase flexibility, reduce costs and maximize the
performance and life of a tractor. With all this hanging in the balance, how do farmers make sure their
tractors are set to deliver the best for them?
During the past two years the Alberta Farm Machinery Research Centre has been testing the effectiveness
of "on the farm" traction power delivery. We have identified three important areas where tractor performance
can often be improved.
First, our tests show that many farm tractors are not optimally ballasted and are often overweight for the way
they are used. What about it farmers - think about the tractors in your farm operation. How did you ballast
them? Did you follow the dealer's recommended setup, did you do it the way dad did it, did you assume
that since it was good enough for the last owner it was good enough for you, or did you consider what your
usage was and try to optimize the weight for your conditions and loads?
Second, our tests show that most farm tractor tires are not at the correct inflation pressures for best tire
performance. This is particularly true with radial tires. What about the tires on your tractor?. What is the
correct pressure and how did you set it?. Did you inflate them by sight until they looked right, did you let
the tire dealer set them when he sold them to you two years ago, or did you figure out the pressure using
the correct load-inflation table and the weight that each tire is supporting? Once you figured out a pressure
and set it, did you ever check it again? How accurate was the gauge you used? Did you measure with the
valve at the top or the bottom of the tire or does that matter?.
Third, our tests show that many farmers are not effectively using their tractors available horsepower and are
not operating in the most efficient engine load range. What about you? How do you select your operating
point?. Do you just go at a speed that feels comfortable to you, do you pull at a specific point on the engine
speed, or do you watch an engine load indicator like a pyrometer and try to keep it in a certain range?
What about overload? Is it OK to pull the engine down somewhat?. How far?. How do you know when your
tractor is lugged too far?.
There are many questions related to correct and efficient operation of farm tractors and the following pages
provide some answers.
When setting up a tractor for efficient operation, there are three important steps:
-First, understand and adjust the total weight and the weight distribution.
-Second, set the tire pressures correctly for the tires and the weight they carry.
-Third, monitor the slip and the operating load and keep them at acceptable levels.
Go through these steps carefully, understand what is done in each of them, and keep up to date with
changes in conditions or equipment. The result will be greater efficiency, reduced cost, and longer service
life for the most common, most used and next to most expensive machine on a farm, the tractor.
Dual Tires. Triple Tires. Single Tires. Tire types. Tire sizes. Tire pressures. Tractor ballasting. Weight
distribution. Ground Speeds. Implement loads. On and on it goes. Setup of a tractor is a balancing act
between a bewildering array of choices. Correct choices increase flexibility, reduce costs and maximize the
performance and life of a tractor. With all this hanging in the balance, how do farmers make sure their
tractors are set to deliver the best for them?
During the past two years the Alberta Farm Machinery Research Centre has been testing the effectiveness
of "on the farm" traction power delivery. We have identified three important areas where tractor performance
can often be improved.
First, our tests show that many farm tractors are not optimally ballasted and are often overweight for the way
they are used. What about it farmers - think about the tractors in your farm operation. How did you ballast
them? Did you follow the dealer's recommended setup, did you do it the way dad did it, did you assume
that since it was good enough for the last owner it was good enough for you, or did you consider what your
usage was and try to optimize the weight for your conditions and loads?
Second, our tests show that most farm tractor tires are not at the correct inflation pressures for best tire
performance. This is particularly true with radial tires. What about the tires on your tractor?. What is the
correct pressure and how did you set it?. Did you inflate them by sight until they looked right, did you let
the tire dealer set them when he sold them to you two years ago, or did you figure out the pressure using
the correct load-inflation table and the weight that each tire is supporting? Once you figured out a pressure
and set it, did you ever check it again? How accurate was the gauge you used? Did you measure with the
valve at the top or the bottom of the tire or does that matter?.
Third, our tests show that many farmers are not effectively using their tractors available horsepower and are
not operating in the most efficient engine load range. What about you? How do you select your operating
point?. Do you just go at a speed that feels comfortable to you, do you pull at a specific point on the engine
speed, or do you watch an engine load indicator like a pyrometer and try to keep it in a certain range?
What about overload? Is it OK to pull the engine down somewhat?. How far?. How do you know when your
tractor is lugged too far?.
There are many questions related to correct and efficient operation of farm tractors and the following pages
provide some answers.
When setting up a tractor for efficient operation, there are three important steps:
-First, understand and adjust the total weight and the weight distribution.
-Second, set the tire pressures correctly for the tires and the weight they carry.
-Third, monitor the slip and the operating load and keep them at acceptable levels.
Go through these steps carefully, understand what is done in each of them, and keep up to date with
changes in conditions or equipment. The result will be greater efficiency, reduced cost, and longer service
life for the most common, most used and next to most expensive machine on a farm, the tractor.
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