"Motor" container
From TrainzOnline
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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. | 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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moving-friction-coefficient 0.03 | moving-friction-coefficient 0.03 | ||
air-drag-coefficient 0.00017 | air-drag-coefficient 0.00017 | ||
| − | full-throttle-speed 33.0 | + | full-throttle-speed 33.0<big>*</big> |
driving-wheel-weight-ratio 1.0 | driving-wheel-weight-ratio 1.0 | ||
} | } | ||
| − | + | * Omit/delete as an illegal value in TRS2006<!-- or where and whenever the software installed it. Someone add a build number of one or the other kind --->{{Tech question}} | |
====resistance==== | ====resistance==== | ||
Revision as of 14:55, 8 June 2013
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The Motor container is a top-level config.txt file entry used by Enginespec and Steam Enginespec assets.
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
}
- Omit/delete as an illegal value in TRS2006∅
resistance
- Type: Decimal
- Desc: Not used
adhesion
- Type: Decimal
- Desc: Not used
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...)
maxspeed
- Type: Decimal
- Desc: Maximum speed in DCC mode.
brakeratio
- Type: Decimal
- Desc:
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.
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.
throttle-notches
- Type: Integer
- Desc: Number of throttle notches
axle-count
- Type: Integer
- Desc: Number of axles on this vehicle. Used in rolling resistance calculations.
surface-area
- Type: Decimal
- Desc: frontal surface area (sq ft) of vehicle. Used in air resistance calculations.
moving-friction-coefficient
- Type: Decimal
- Desc: Used in rolling resistance calculations.
air-drag-coefficient
- Type: Decimal
- Desc: Used in air resistance calculations.
full-throttle-speed
- Type: Decimal
- Desc:
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.
Example motor container
TBD
Resistance calculations
These calculations occur according to Davis formula:
R = (1.3ˑm + 29ˑaxle-count) + moving-friction-coefficientˑmˑV + air-drag-coefficientˑsurface-areaˑV^2 + 20ˑmˑG
R = total resistance in lb. including grade resistance
V = speed - mph
m = weight of the vehicle (tons)
G = % grade (upgrade +, downgrade -)
