Speed Limit in F4 display

[crstagg]

My activities work fine. No idea about the gp30 not much interest in USA railroads sorry.

But the max speed of those locos i believe is 78mph (34.869 12)

But if the train that loco is hauling has a lower overall speed then i would adjust the max velocity of that consist accordingly.

Ok then you are using meters per second.

[baldwin]

Neyland,
Here is a portion of a CON file:
TrainCfg ( "576 test"
Serial ( 1 )
MaxVelocity ( 31.73984 0.04093 )
NextWagonUID ( 61 )
Durability ( 1 )
Engine (
UiD ( 0 )
EngineData ( gp30_up713 dekosoft_up_gp30 )

The MaxVelocity line in the gp30_up713 engine file at the lead is:
MaxVelocity ( 71mph )

What would you change the MaxVelocity line of the to?

I would change the MaxVelocity to the maximum for the engine which would depend on the gear ratio. The Davis calculations, grade and train weight then are the deciding factors on how fast the player train actually travels.

The AI then will use the MaxVelocity line but will also be governed by line speeds, braking and acceleration duration, and will not suffer from the signal problems that exist in MSTS where a restricting signal is encountered. It will resume line speed when that is available.

[crstagg]

I would change the MaxVelocity to the maximum for the engine which would depend on the gear ratio. The Davis calculations, grade and train weight then are the deciding factors on how fast the player train actually travels.

The AI then will use the MaxVelocity line but will also be governed by line speeds, braking and acceleration duration, and will not suffer from the signal problems that exist in MSTS where a restricting signal is encountered. It will resume line speed when that is available.

OF COURSE if some governing factor requires a lower speed than the Engine MaxVelocity then the question of what value is used is mute. But my real question is does OR use the value of MaxVelocity of the CON file, which is static, or the MaxVelocity from the engine file of the current lead engine, which can change? Realizing the CON value is meters/sec where as the ENG data is MPH or KPH

[neyland]

Yes buddy meters per second is how max velocity is formulated in the .con files.

In the case of a UK consist from say the early 1960's.

The loco may have a max operating speed of 90mph, but the non continuous braked 4 wheel mineral wagons would have a max operating speed of 30mph.

So i would set that consists max velocity as 30mph, written as meters per second.

[crstagg]

Yes buddy meters per second is how max velocity is formulated in the .con files.

In the case of a UK consist from say the early 1960's.

The loco may have a max operating speed of 90mph, but the non continuous braked 4 wheel mineral wagons would have a max operating speed of 30mph.

So i would set that consists max velocity as 30mph, written as meters per second.

Ahhh yes. I understand, but why put a racehorse pulling what an ox could pull. ;-)

[neyland]

Because all the early UK diesels were designed as mixed traffic locomotives, buddy.

So they did both passenger and freight work.

[crstagg]

Because all the early UK diesels were designed as mixed traffic locomotives, buddy.

So they did both passenger and freight work.

I don't doubt that. But you miss my point. Why would a smart RR Power Manager assign a high speed loco to pull wagons restricted to low speed if some other lower speed loco was available?

[baldwin]

Unlike the US, the UK railways were a nationalised company, and had a mixed bag of diesel types that were hurried into service to replace steam. Most developed into reliable units, but some were worse than useless. None were dedicated freight engines, the choice was mixed traffic or passenger along with route availability. The restriction was the old steam era goods stock that was not replaced until later on and were not allowed to travel at any great speed because they had no brakes.

[neyland]

I don't doubt that. But you miss my point. Why would a smart RR Power Manager assign a high speed loco to pull wagons restricted to low speed if some other lower speed loco was available?

They wouldn't normally, certain locomotives would be allocated to run specific service diagrams. But there can always be the case that due to unavailability of a diagrammed loco, anything available is used.

I was a fitter (mechanical engineer) on BR-WR from the 1960's onwards and i have seen all sorts of strange loco allocations.

[baldwin]

Ah yes, I forgot about those diagrams drawn up by the traffic office.