Motor Configs by Grabby

[bdbssb]

Grabby La Toosh setting speed

Set the "maxForwardSpeed" to the speed you want to achieve.
Then with no load test if you can reach that speed. 
If not, then decrease the "minForwardGearRatio" number in small steps until you can reach that speed but no more. 
Doing this will cause you to loose pulling power. 
If you loose too much pulling power then increase the "torqueScale" until you have enough to get the job done but no more. 
You can use my Horsepower chart to determine how much HP you would have at that Torque setting, and finally place that "hp" number in the "hp" attribute.
NEVER change the RPM value!, that will disrupt the "Torque Curve" values, and make the vehicle very jittery and inconsistent while accelerating and possibly very unusable if you go to far.
The minRpm and maxRpm are tied to the range and graduated steps in the torque curve. 

Grabby La Toosh increase pulling power

Search for  "torqueScale", it will be contained in the "motorConfiguration" section in the main XML

Increase the number in very small amounts at a time.  increasing this number too far will cause very poor acceleration characteristics

Grabby La Toosh  Engine Setting Definitions

 minRpm = "1000" - the minimum RPM at which the vehicle is operating. If the value is too high the vehicle tends to get a racing start (spinning or shooting away) - this value depends on: density (total weight in the i3d file) and torque value at the rpm value.

 maxRpm = "2200" - here is the maximum RPM this value depends on: density (total weight in the i3d file)
 minRpm and maxRpm are closely tied to the torque curve and should never be changed unless you really know what you are doing! changing these otherwise can cause a jittery and unstable driving experience
 
 minForwardGearRatio = Determines the max forward speed - the lower the value the faster the vehicle drives at the same rpm and torque. 
    
 maxForwardGearRatio = Determines the starting speed - If vehicle is starting out too slow you can decrease the maxForwardGearRatio.

 minBackwardGearRatio = Ratio of the reverse - the higher the value the faster the vehicle moves backwards        
    hp="xxx" -  This does NOT change anything!  this is only used for Calculation, change this number to what you want it to be, then you have to do some math - "hp * 0.00434 = xx", that is what you set the tourqueScale to, to get that howsepower.
        
 maxForwardSpeed="xx" -     This is the speed you are "Limited" to, raise the number to "allow" the machine to go faster, IF it has enough Torque to do so at X load
        
 brakeForce="xx.x"  -  Increase for more braking power
 
 lowBrakeForceScale="0.x" - Decrease for less engine breaking power, this is only when you are "coasting", this does not affect the brake pedal
        
<motorConfiguration name="Name that appears in the Store" hp="305" price="0">
 <motor torqueScale="1.29" minRpm="850" maxRpm="2200" maxForwardSpeed="63" maxBackwardSpeed="22" brakeForce="13.5" lowBrakeForceScale="0.22" >
 
Do NOT Change >     <torque normRpm="0.45" torque="0.9"/>
Do NOT Change >     <torque normRpm="0.5" torque="0.97"/>
Do NOT Change >        <torque normRpm="0.59" torque="1"/>
Do NOT Change >     <torque normRpm="0.72" torque="1"/>
Do NOT Change >     <torque normRpm="0.86" torque="0.88"/>
Do NOT Change >     <torque normRpm="1" torque="0.72"/>
                </motor>
 
<transmission minForwardGearRatio="10.2" maxForwardGearRatio="250" minBackwardGearRatio="32" maxBackwardGearRatio="250" /> </motorConfiguration> 

How to figure out what torque=HP
Torque=hp(.00434)

[bdbssb]

If you’re too lazy to do the torque to HP math 😂

[Graphite]

Great Info bdbssb ;)

Just started working on a <motorConfigurations> set today, and was pondering over all these values and how they would interact with one another. You saved me a lot of trial and error, much appreciated bud.

Cheers 

 

[bdbssb]

Yes a great asset done by grabby