Speed Problem

[mastercool9]

TS12 i have a track running in a circle and only 1 switch in the track. i am going only 1 way on this track and use the switch to go to a trackmark then come back on the track and continue on it's way. when i don't go to the trackmark and just go around and around the train will run at the posted 70mph ,but when i go to the trackmark and come back on the track, the train slows to 35mph and stays there. i have put in two more switches but don't use them. question is why does the speed not go back to 70? i hope this is clear. thanks for any help

 

[pfx]

What signalling is on the track? A rough track diagram would be quite handy too. As I understand it, you have a simple circular route and at some point on this, you have a passing loop? Or have I misunderstood?

 

[Euphod]

Is the switch returning to the mainline after you enter the siding with the trackmark? Then when you re-enter the mainline, is the other switch relining as well? If not then as you complete the circle you'll have one switch lined incorrectly.

 

[mastercool9]

it is not a passing loop it is just a spur and has only one switch. the switch is not resetting but i reset it after train got back on track and it didnot help.

 

[mastercool9]

also there is no signals at all on the track.

 

[fran1]

Put signals before each switch (facing towards the spur). Also put a speed sign in. Depending how big the loop is put a signal down part way round.

 

[Euphod]

How about the spur? Do you have a buffer at the end, or some sort of stopping device? That would effectively act as a red signal. If you have no other signals on the track, my guess is the consist doesn't see the "red" until you put it in the spur, and from then on it knows about the red, so it acts as if it's under yellow and runs at half speed.

 

[mastercool9]

ok thank you guys i will try what you said

 

[Feiler]

LOCOMOTIVE SPEEDS

Is the switch returning to the mainline after you enter the siding with the trackmark? Then when you re-enter the mainline, is the other switch relining as well? If not then as you complete the circle you'll have one switch lined incorrectly.

I wonder if you would answer a question about speed. I'm not sure where to post this question, so I'm trying you. Can you tell me why my locomotive, an elderly LMS loco, insists on travelling around the track at 21mph, despite passing signs saying 50mph and 70mph? Is there any way in which the loco can be told to obey the speed signals? Yours hopefully. Peter Feiler.

 

[KenGreen]

If there is no other obvious reason check the config.txt file of the loco to establish the Kuid of the engine specs used. Then open that config.txt and check the motor section for a line maxspeed this is set in metres per second. 10 metres per second = approx 22 mph. I have had this problem before with maxspeed set to 20 instead of 50.
This may seem obscure but it may be worth checking.

Ken

 

[fran1]

It may be obeying the signals ahead or as above.

 

[Dermmy]

The problem is one switch in a loop. Your train is running at half speed because:

Trainz AI looks two levers ahead unless it finds an obstruction. So the AI looks forwards from your loco, sees a lever, if necessary sets the lever to the required route, then looks ahead for the next lever. But what does it find instead? It finds the back of a train. Unfortunately the AI is not smart enough to recognise the train it has found as being itself. It has just found a train ahead, occupying the next block. So it treats the whole thing as one train perpetually following another, therefore 'yellow' signals, therefore 1/2 speed.

The fix is another lever. A better fix is two more levers. Use invisible track and invisible levers to create a loop with THREE junctions (one the visible spur you want, the other two invisible dead ends) roughly equidistant from each other around the loop. An invisible signal protecting the invisible levers is not strictly necessary, but might help also. But either way, three levers in the loop will give you green sigs and 70mph...

Andy

 

[llebrez]

The question is "How far does AI looks ahead". If the originators of the program decided to make running trains so fail safe, the least they should have done is to educe the radius of action of this. In my case, the "looking ahead" changes the speed of the loco for over a Km ! and you sit running at slow speed for a long time. This also happens if the speed signal is ahead; At a great distance the train slows down to that speed, even if the running speed in this section is more than double. I wish that this is fixed in the SP.. if ever..

 

[Feiler]

Ken, Many thanks for your prompt and welcome reply. I'll do a bit of investigating. Thanks. Peter Feiler.