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Results tagged with rail
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user 19906
Questions pertaining to railroads and railroad tracks
3
votes
Why can't trains stop in 2x the distance of trucks from the same speed?
TL;DR: temperature dependence of the coefficient of friction
After doing some calculations IMHO the main factors IMHO affects the braking distance of trains compared to trucks is the increase of wheel …
- 24.3k
55
votes
Accepted
Why are railroad tank cars bent in the middle?
As other have pointed out, the main utility is to allow easier cleaning of the tank cars from sediment (solid precipitates). Usually, there is a drain in the lowest point.
The reason that it is in t …
- 24.3k
10
votes
Why are train brakes so complicated?
This answer addresses the following sentence:
So I'd expect to see the brakes applied by a spring that is capable of stopping the wheels of a fully loaded car, and a single-acting cylinder that works …
- 24.3k