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Well, trains don't fly off the tracks because of the wheels, the part that rides on the track is notched out, leaving a back-plate that holds it on the tracks.
When accelerating, the wheels can very easily slip. Even with expert engineers, the wheels will slip sometimes. Since it's metal on metal, there's a low amount of friction. The train moves because of the extreme weight, forcing the wheels against the track. Often times when starting from a stop, the train will spin it's wheels a bit, but once it gets up to speed, momentum makes things a lot easier; at least when accelerating. Decelerating, or slowing down/stopping is very difficult with a train, due to that same lack of friction. A train with many heavy cars can take a mile or more to come to a full stop.
The reason that trains use such a low-friction medium for their wheels is because of torque. The amount of torque when getting the train up and going would be immense, and exponentially more when stopping. It would likely rip the wheels and axles right off of the train.
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With respect, not quite. The wheels are not "notched" but flanged (the "back-plate", integral with the wheel's steel tyre, not a separate component). In fact the flanges are a sort of back up because the wheel rim and rail profiles are so designed that each wheel-set (pair of wheels and the axle on which both are rigidly mounted) is self-centering on the track. The flanges play a relatively minor part except on very sharp, slow curves; they don't stay in contact with the rails.
The effort needed to accelerate or decelerate anything is to overcome inertia, and the reason a train is so efficient is its low rolling-resistance.
Torque is turning-moment. The driving torque on a train is applied via gears to the driving-axle, and there is no way it could rip the wheels off unless the components are actually flawed in some way because the whole machine is designed to withstand more than the maximum effort available from the engine or motor. Even if the wheel slipped on the axle, the axle would stay in place, in its bearings.
What else can I help you with?
What is the difference between posi track vs limited slip differential?
Nothing, Posi-Track is a brand name (GM), limited slip is what it is. Kind of like Kleenex is to facial tissue.
What is pay in slip or without slip?
iitz a slip through which aperson can deposit his money or check in his bank account
What are dip slip faults?
Dip-slip faults is the term used for any fault that has movement in the vertical direction. One side moves up where as the other side moves down. Examples are Normal Fault and Reverse fault.
Which type of fault occurs when portion of rock moves upward leaving the other in place with a dip?
The answer is a dip-slip fault, When a portion of rock moves upward leaving the other in place with a dip this is known as a dip-slip fault.
Sine bears can be used with out slip gauge true or false?
False, the sine bears can't be used without the slip gauge.
What fault moves sideways past each other?
This is called a strike slip fault.
What are the process for use of deficiency slip to track incomplete records?
some body tell me
If you are lying with your leg on a train track and a train comes and rips off your leg would you wake up or just slip into a coma immediately?
You might wake briefly but would lose consciousness (and then die unless immediate help is available) quickly because of the volume of blood you would lose through your severed femoral artery.
What is a oblique slip fault?
An oblique slip fault is a type of fault where the movement is a combination of both strike-slip and dip-slip motion. This means that the fault moves both horizontally and vertically. Oblique slip faults are common in areas where different stresses are acting on the Earth's crust, causing complex fault movements.
Can you have a sentence with the word slip?
I don't see any way to slip the word into a sentence. The ceramicist placed the slip in the kiln to make his new coffee cup. There will be no refunds without a sales slip.
Is a 1970 GTO rear end limited slip?
Yes, Pontiac called it Safe-t-track. Many are worn out from years of hard driving though, and no longer function correctly without being rebuilt.
What is the definition for a strike slip fault?
A strike-slip fault is a type of fault where rocks on either side move past each other horizontally due to shearing forces. This movement can occur in either a left-lateral or right-lateral direction, depending on the relative motion of the blocks on either side of the fault.
