# Drawbar Power

Drawbar power (Dbhp) is power measured at the point implements are attached to the tractor, drawbar or 3 point hitch. During tractor testing a load cell is placed between the tractor and a load. The drawbar pull and the speed of travel are recorded and used to calculate drawbar power. Using measurements of pull (pounds) and speed (miles per hour) eliminates the PTO power equations. Because force is measured in pounds and velocity (V) measures both distance traveled and the time required to travel that distance (miles per hour), the best equation to use is:

Hp 375

where F = Force (lb); V = Speed (mph); 375 = Units conversion constant. This equation is derived by modifying the standard power equation.

t hr min 33,000 375

Problem: How much drawbar power is a tractor producing if it develops 1,500 lb of force at a speed of 5.5 miles per hour?

Solution:

mile

Hp 375 375 375 F

+7 -12

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### Responses

• Casey
What is Drawbar power?
2 years ago
• UFFO
How to calculate drawbar power?
2 years ago
• sophia
Which implements are attached to the tractor using the drawbar?
1 year ago
What is meant by drawbar power?
11 months ago
• Ferumbras
How does drawbar power work?
11 months ago
How is drawbar power related to tractors?
9 months ago
• cora whitfoot
How to calculate drawbar pull of tractor?
7 months ago
• stefan
How to calculate draw bar power required?
6 months ago
• alexander
How to calculate load on a drawbar?
4 months ago