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Max speed calculation after going downhill #4473

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DorpsGek opened this issue Feb 6, 2011 · 2 comments
Closed

Max speed calculation after going downhill #4473

DorpsGek opened this issue Feb 6, 2011 · 2 comments
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flyspray This issue is imported from FlySpray (https://bugs.openttd.org/)

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@DorpsGek
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DorpsGek commented Feb 6, 2011

alocritani opened the ticket and wrote:

I'm not sure this is a bug or is intended.

In attached savegame, two equals trains (same loco, same wagons, same load) goes via two different ways: one over a small hill and the other on a flat track.
The train that goes flat is able to speed up to 30 km/h.
The other train, while going uphill, slows down a lot (to 6 km/h) but going down it speeds up and goes up to 45 km/h.
after a while speed starts decreasing (because of friction, I think) until it reaches 37 km/h.
The second train then keep 37 km/h until the end.

Is this intended? I mean, why not slowing to 30 km/h or why is the other train unable to reach 37 km/h?

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Reported version: trunk
Operating system: All


This issue was imported from FlySpray: https://bugs.openttd.org/task/4473
@DorpsGek
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DorpsGek commented Feb 6, 2011

adysnook wrote:

there can be no bug. The power needed to move the train with 30 km/h is lower than the power needed for 37 km/h ; the power needed to mantain the speed is lower than the power needed to raise the speed. I think this could be normal. I didn't do the calculations for this example.


This comment was imported from FlySpray: https://bugs.openttd.org/task/4473#comment9614

@DorpsGek
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DorpsGek commented Feb 6, 2011

Rubidium closed the ticket.

Reason for closing: Fixed

In r21997


This comment was imported from FlySpray: https://bugs.openttd.org/task/4473

@DorpsGek DorpsGek closed this as completed Feb 6, 2011
@DorpsGek DorpsGek added flyspray This issue is imported from FlySpray (https://bugs.openttd.org/) Vehicles labels Apr 7, 2018
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