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The Tractive GPS tracker records pet activity - including sleep, rest time, and estimated calories burned - to give users insights into their pet's fitness and wellbeing. Users can set activity goals and also see how their pet's activity levels compare to other pets in local and global leaderboards. Users with dogs can also keep track of their ...
The EMD DDA40X is a 6,600 hp (4,943 kW) D-D locomotive, built by EMD from 1969 to 1971 exclusively for the Union Pacific Railroad. [1] It is the most powerful diesel–electric locomotive model ever built on a single frame, having two 16-645E3A diesel prime movers. [2]
The term tractive effort is often qualified as starting tractive effort, continuous tractive effort and maximum tractive effort.These terms apply to different operating conditions, but are related by common mechanical factors: input torque to the driving wheels, the wheel diameter, coefficient of friction (μ) between the driving wheels and supporting surface, and the weight applied to the ...
Traction can also refer to the maximum tractive force between a body and a surface, as limited by available friction; when this is the case, traction is often expressed as the ratio of the maximum tractive force to the normal force and is termed the coefficient of traction (similar to coefficient of friction).
One of the most powerful electric locomotives ever built, it also is the most powerful (short term) single-frame locomotive ever built (currently [when?] its maximum short term power is limited to 12,000 horsepower (8,948 kW)); It has immense short term power with a tractive effort of 312 kN up to a speed of 140 km/h (87 mph). DB Class 151 ...
They are often six-axle slugs and are often paired with lower-powered six-axle locomotives. They are designed for the specialized purpose of pushing a long cut of cars over a hump at 2 to 3 miles per hour (3 to 5 km/h), while yard slugs would normally operate at up to 15 miles per hour (24 km/h).
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Westing [1] gives a figure of 160,000 lbf (710 kN) in compound mode and seems to indicate that it was the largest tractive effort for any locomotives up to the mid-1910s. The Union Pacific Big Boy, built in the 1940s, did not exceed the tractive effort of the Erie locomotives either, as it had a tractive effort of only 135,375 lbf (602.18 kN).
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