Locomotives performance.

Locomotives performance. Rate Topic:

#1 Fablok

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Posted 27 May 2016 - 10:17 AM

Guys I strongly recomend to tune up Yours rolling stock. Thanks to OR now locos have potencial. Tune up loco powers to real values. For example :

From:
MaxPower ( 2855.4kW ) Comment ( 4400 HP x 87% Eff. )
MaxForce ( 656.4kN )
MaxContinuousForce ( 498.2kN )
MaxVelocity ( 73mph )
MaxCurrent ( 1800A )
WheelRadius ( 21in )
Sanding ( 5mph )
NumWheels ( 4 )
MaxTemperature ( 120 )
MaxOilPressure ( 90 )
To:
MaxPower ( 3281kW )
comment ( 4400HPx89%eff )
MaxForce ( 814.0kN )
MaxContinuousForce ( 738.4kN )
MaxVelocity ( 74mph )
MaxCurrent ( 1800A )
WheelRadius ( 21in )
Sanding ( 25mph )
NumWheels ( 12 )
MaxTemperature ( 120 )
MaxOilPressure ( 90 )
It realy give great results. Use http://www.thediesel...DataSheetz.HTML for data and two calculators one for HP to KW second Lbs to kN http://www.rapidtabl...er/hp-to-kw.htm http://www.convertun.../to/kilonewtons
Here pictures from ending of act. Same consist but look at time firsf photo before second after tuning.

http://wstaw.org/m/2016/05/27/SLI_BAD_DAY_FOR_TRAINS2_2016-04-08_00.23.09.png

http://wstaw.org/m/2016/05/27/SLI_BAD_DAY_FOR_TRAINS2_2016-05-21_20.11.24.png

#2 engmod

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Posted 27 May 2016 - 03:50 PM

It looks like you have converted a large dc loco to AC.

You need to tell us which loco?

#3 Fablok

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Posted 28 May 2016 - 05:21 AM

Nope. It was ES44AC eng. That bad it is in some cases. Loco comes from SLI. Best what to do is compare eng files with data sheets of real locos.

#4 cr-stagg

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Posted 08 June 2016 - 05:09 PM

Your data is probably more correct than the original but I prefer to use the ENG files provided to the community by Bob Boudoin. His files are at T-S.com
Open Rails Version 4.86OR 6 Axle AC Physics
Name: v4_86or_acphysics.zip
Size: 43,483 Date: 03-25-2015
Open Rails Version 4.86OR 6 Axle AC Physics. Revised .eng files to give AC locomotives more realistic performance in OR. Experimental Open Rails specific V4.86OR modifications to .eng files by Bob Boudoin.

For the same parameters you show for ES44AC he uses:
MaxPower ( 3189.7kW )
comment( OR Power at the rail )
MaxForce ( 891.1kN )
MaxContinuousForce ( 799.6kN )
comment( thats the usable one, full capacity is 5000gal )
MaxDieselLevel( 5000gal )
MaxVelocity ( 75mph )
MaxCurrent ( 2380A )
WheelRadius ( 21in )
Sanding ( 22mph )
MaxTemperature ( 215 )
MaxOilPressure ( 90 )

#5 engmod

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Posted 08 June 2016 - 05:56 PM

Hi Charles,

OR needs to know the gross HP, it derates the HP internally.
Bob's 89% here is not required for OR, must have 100%

#6 disc

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Posted 10 June 2016 - 08:11 AM

engmod, on 08 June 2016 - 05:56 PM, said:

Hi Charles,

OR needs to know the gross HP, it derates the HP internally.
Bob's 89% here is not required for OR, must have 100%

That was the bug of the adhesion simulation. Now it seems to be fixed, so that power loss is 1%+ wheelslip loss.

#7 gkhager

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Posted 10 June 2016 - 10:32 AM

Since you are both on the OR development team. Are you saying that OR requires the gross HP or that it requires the 89% as Bob Boudoin has listed. The statement from disc commenting on engmod's reply is not very clear.

Thanks for the clarification.

Geoff

#8 burgerbern

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Posted 10 June 2016 - 11:59 AM

OR does require the gross hp. when you put in 3000hp for a SD40-2 and then look in the extended HUD you can see that OR has factored in the power/adnesion losses. (and with OR you can express that as 3000hp or the equivelent in Kw it will run from either) as i only run in OR I put in the power in HP as it saves me converting the figure to KW when reading from engine specs,

#9 Hamza97

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Posted 10 June 2016 - 09:10 PM

One of electric locomotives i have in OpenRails have power output of 5350HP starting and 5000HP continuous, i have entered 5350HP in MaxPower parameter. OpenRails reduces the HP to almost correct figure of ~4940HP.

#10 R H Steele

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Posted 11 June 2016 - 09:43 AM

burgerbern, on 10 June 2016 - 11:59 AM, said:

OR does require the gross hp. when you put in 3000hp for a SD40-2 and then look in the extended HUD you can see that OR has factored in the power/adnesion losses. (and with OR you can express that as 3000hp or the equivelent in Kw it will run from either) as i only run in OR I put in the power in HP as it saves me converting the figure to KW when reading from engine specs,

Do any of the following options/experimental affect how OR calculates these losses?
1. Adhesion factor correction slider
2. Adhesion factor random change slider
3. Adhesion proportional to rain/snow/fog

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