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2006-07-15 05:51:19 · 14 answers · asked by doemeg1962 1 in Cars & Transportation Rail

14 answers

I finally learned about this about a year ago. The wheels are tapered. The outermost part of the wheel is more narrow than the inner part. When going around a turn, the side of the wheel that needs to turn "faster," makes more contact with the rail. I hope this makes sense.

2006-07-16 15:15:00 · answer #1 · answered by mkejt 2 · 5 1

Since you're asking about solid axles:

Train cars don't have differential gears like autos do. When a train car is in a curve, one of the wheels on each solid axle slips a bit on its rail. That's why you often hear squealing and screeching as a train passes through a curve. The tighter the curve, the more slipping, and the more screeching you hear.

Sometimes railroads install rail oiling devices on the inside edge of the outer rail of a curve, to spread a little oil on that rail and alllow the wheels to slip more easily and keep the rail from wearing down so fast. This also helps stop the annoying noise.

2006-07-15 11:22:11 · answer #2 · answered by Mark V 4 · 0 0

The individual train car does not make turns, they only go straight. The turns on railroad tracks are long enough that the cars can't tell the difference. The train only turns at the links between cars.

2006-07-15 05:56:32 · answer #3 · answered by comeKK 2 · 0 0

On railroad cars the wheelset (trucks) sit on a kingpin, allowing the set to rotate. Thats all there is to it...

The ends of the axles sit in a bearing so the car will roll.

There are minimum curve radii -- some longer cars/locomotives can't go on smaller radius curves found in industrial switching areas.

2006-07-15 07:46:56 · answer #4 · answered by DT89ACE 6 · 0 0

A train car turns due to slight bends over time in the track. That is why you never see sharp bends in railroads. It would cause derailment (coming off the track) which involves several hours and $ in equiptment depending on the amount of train off the track to get corrected. I hope this answered your question quickly and thuroughly.

2006-07-15 16:09:52 · answer #5 · answered by da_sniper_guy 2 · 0 0

They follow the tracks. And since the wheels don't turn in the direction of the track curves, the friction created often causes some pretty loud squeaks.

2006-07-15 06:07:54 · answer #6 · answered by Anonymous · 0 0

have you ever noticed that curves in a railroad track are much wider than a curve in a highway? They have much much longer radius than an automotive curve. The solid axles can absorb the differential pressures.

2006-07-15 05:56:20 · answer #7 · answered by damndirtyape212 5 · 0 0

The same way you skate board does. Look at the trucks. The cars do lean into a turn

2006-07-15 05:57:55 · answer #8 · answered by tazinator5150 4 · 0 0

the thing that holds the axles is called a truck in top center of this truck is a large pin that fits into a hole in the frame of the unit which rides on bearings that allows it to turn left to right

2006-07-16 04:18:04 · answer #9 · answered by accomacgeo 4 · 0 0

There are ball bearings that go around the axles at the attachment points to the car/frame.

2006-07-15 05:56:53 · answer #10 · answered by debbie 4 · 0 0

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