"Motor" container

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(+{{ORP-top}}+{{ORP-bot}}+{{cont-Engine}}, clarify)
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{{FUN-beg}}
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The Motor container is a top-level [[config.txt file]] entry used by [[KIND Engine|Enginespec]] and [[KIND Steam-engine|Steam Enginespec]] assets.
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{{ORP-top}}
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The Motor container is a top-level [[config.txt file]] entry used to define gross physics performance factors for a powered vehicle defined within the Trainz game engine. The container is used by config.txt files for [[KIND Engine]] (internal combustion Enginespecs) and [[KIND Steam-engine]] (Steam Enginespecs, external combustion engines) containing vehicular assets, including drivable boats, planes and automobile based vehicles inside the virtual reality of a [[KIND Map|route]].
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==Supported Tags==
 
==Supported Tags==
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  motor
 
  motor
 
  {
 
  {
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     resistance                           1.7
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     resistance                     1.7
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     adhesion                             5.0
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     adhesion                       5.0
 
     maxvoltage                    600.0
 
     maxvoltage                    600.0
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     maxspeed                         33.3
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     maxspeed                       33.3
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     brakeratio                       55000
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     brakeratio                     55000
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     max-accel                       3500
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     max-accel                     3500
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     max-decel                       9000
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     max-decel                     9000
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     throttle-notches<big>**</big>                      8
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     throttle-notches               8
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     axle-count                       6
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     axle-count                     6
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     surface-area                     80.0
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     surface-area                   80.0
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     moving-friction-coefficient 0.03
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     moving-friction-coefficient   0.03
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     air-drag-coefficient       0.00017
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     air-drag-coefficient           0.00017
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     full-throttle-speed<big>*</big>        33.0
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     full-throttle-speed           33.0
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     driving-wheel-weight-ratio   1.0
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     driving-wheel-weight-ratio     1.0
 
  }
 
  }
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'''* ''' - Omit/delete as an illegal value in TRS2006 and  versions before.<!-- or where and whenever the software installed it. Someone add a build number of one or the other kind ---> {{Tech question}}
 
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'''** - Omit/delete as an illegal value in versions before TRS2004.<!-- or where and whenever the software installed it. Someone add a build number of one or the other kind ---> {{Tech question}}
 
  
 
====resistance====
 
====resistance====
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==== throttle-notches ====
 
==== throttle-notches ====
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:'''Type''': Integer, defined as the index of the last array-element ''with non-zero values'' in an array of arrays (container of sub-containers) &mdash;the dependent '''[["Throttle-power" container]]'''.
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:Type: Integer
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:* the contained arrays are the arrays-listing-paired-values (steps-of max speed and acceleration thrust force)&mdash; so the throttle-notches value is the last index# of an (nn+1)th element array listing elements made of other subcontainers (arrays of paired numbers which define points on a speed-power graph; and which has no fixed number of paired datum requirements; one engine spec might list 14, another 12 or 20).
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:Description: Number of throttle notches in the cabin. In the vast majority of cases this will be 8, but limited support does exists for other values.
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:'''Description''': Can be viewed as the '''Number of "Power-is-applied" throttle-notches''' listed in the [["Throttle-power" container|"Throttle-power" arrays of paired values]] (container) with power applied&mdash;'''''not counting 'OFF'''''' or zero power applied.
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# Not an total-elements or count-of-elements value, but the last legal index of the last element (nn) in an 1+nn-element array where the first element is idexed by 0 (zero).
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## The first or Zeroth-indexed element has a value of zero, corresponding to Zero power applied, or Neutral.
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## Value indicated must correspond to the number of NON-ZERO data arrays listed in the [["Throttle-power" container|throttle-power  container]] (a table of entries).
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# Each table element takes one index number in an array, so eight throttle notches (Diesel, no dynamic brakes) has nine array elements corresponding to a correct '''throttle-notches''' value of 8 (eight)&mdash;No Power, and eight Power Applied steps.
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# Dynamic brakes creates a doubling of elements and indexes, so a diesel with dynamic brakes will list 16 as the throttle-notches tag value, whilst '''the 'throttle-power' arrays''' will have ''18 total elements'' &mdash;in this case: two zero power states, dynamic brakes engaged or not (normal) engaged states.
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====axle-count====
 
====axle-count====
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====surface-area====
 
====surface-area====
 
:Type: Decimal
 
:Type: Decimal
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:Desc: frontal surface area (sq ft) of vehicle. Used in air [[#Resistance_calculations |resistance calculations]].
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:Desc: Frontal surface area (sq ft) of vehicle. Used in air [[#Resistance_calculations |resistance calculations]].
  
 
====moving-friction-coefficient====
 
====moving-friction-coefficient====
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====full-throttle-speed====
 
====full-throttle-speed====
 
:Type: Decimal
 
:Type: Decimal
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:Desc:
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:Desc: Obsolete- no longer used. (Previously: maximum speed with DCC throttle at 100%)
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Notes: TRS2006-SP0 reports this tag as an error in a "container-type 'motor'"
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====driving-wheel-weight-ratio====
 
====driving-wheel-weight-ratio====
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These calculations occur according to Davis formula:
 
These calculations occur according to Davis formula:
  
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R = (1.3?m + 29?axle-count) + moving-friction-coefficient?m?V + air-drag-coefficient?surface-area?V^2 + 20?m?G<br><br>
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R = (1.3·m + 29·axle-count) + moving-friction-coefficient·m·V + air-drag-coefficient·surface-area·V^2 + 20·m·G<br><br>
  
 
R = total resistance in lb. including grade resistance<br>
 
R = total resistance in lb. including grade resistance<br>
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G = % grade (upgrade +, downgrade -)<br>
 
G = % grade (upgrade +, downgrade -)<br>
  
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==Example motor container==
 
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''TBD''
 
  
 
[[Category:Config Container|motor-container]]
 
[[Category:Config Container|motor-container]]
 
{{cont-Engine|motor-container}}
 
{{cont-Engine|motor-container}}
 
{{ORP-bot|motor-container}}<div>{{FUN-bot|motor-container}}
 
{{ORP-bot|motor-container}}<div>{{FUN-bot|motor-container}}

Latest revision as of 20:01, 9 September 2025

The Motor container is a top-level config.txt file entry used by Enginespec and Steam Enginespec assets.

Contents

[edit] Supported Tags

The Motor container supports the following tags. Each tag is show here with its default value. 

motor
{
    resistance                     1.7
    adhesion                       5.0
    maxvoltage                     600.0
    maxspeed                       33.3
    brakeratio                     55000
    max-accel                      3500
    max-decel                      9000
    throttle-notches               8
    axle-count                     6
    surface-area                   80.0
    moving-friction-coefficient    0.03
    air-drag-coefficient           0.00017
    full-throttle-speed            33.0
    driving-wheel-weight-ratio     1.0
}

[edit] resistance

Type: Decimal
Desc: Not used

[edit] adhesion

Type: Decimal
Desc: Not used

[edit] maxvoltage

Type: Decimal
Desc: Voltage to traction motors. This is used to scale the ammeter displayed in the cab. (Power is volts times amps - increasing the voltage means reducing the ammeter...)

[edit] maxspeed

Type: Decimal
Desc: Maximum speed in DCC mode.

[edit] brakeratio

Type: Decimal
Desc: Coefficient between the pressure in brake cylinder and the brake force.

[edit] max-accel

Type: Decimal
Desc: Accelerative force available in DCC mode. Note - this is a force, not a rate of acceleration. The rate of acceleration will depend on the mass of the train as well.

[edit] max-decel

Type: Decimal
Desc: Decelerative force available in DCC mode. Note - this is a force, not a rate of deceleration. The rate of deceleration will depend on the mass of the train as well.

[edit] throttle-notches

Type: Integer
Description: Number of throttle notches in the cabin. In the vast majority of cases this will be 8, but limited support does exists for other values.

[edit] axle-count

Type: Integer
Desc: Number of axles on this vehicle. Used in rolling resistance calculations.

[edit] surface-area

Type: Decimal
Desc: Frontal surface area (sq ft) of vehicle. Used in air resistance calculations.

[edit] moving-friction-coefficient

Type: Decimal
Desc: Used in rolling resistance calculations.

[edit] air-drag-coefficient

Type: Decimal
Desc: Used in air resistance calculations.

[edit] full-throttle-speed

Type: Decimal
Desc: Obsolete- no longer used. (Previously: maximum speed with DCC throttle at 100%)

[edit] driving-wheel-weight-ratio

Type: Decimal
Desc: Ratio (between 0.0 and 1.0) of the weight of this vehicle bearing down on driven wheels. Used by steam locos only.

[edit] Resistance calculations

These calculations occur according to Davis formula:

R = (1.3·m + 29·axle-count) + moving-friction-coefficient·m·V + air-drag-coefficient·surface-area·V^2 + 20·m·G

R = total resistance in lb. including grade resistance
V = speed - mph
m = weight of the vehicle (tons)
G = % grade (upgrade +, downgrade -)

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