Turbo and clutch slip?

I don't know if this is related but, I put the new turbo code on the van and I get clutch slip no matter how I set the "lockingTorqueLimit"

(Don't mind me I am a newbie when it comes to adding things to jbeam files lol, so if its not set up right please let me know.)

Note: I set up the turbo like that to try simulate a big single turbo

Here is the engine setup.
],
"enginetorque":[
["rpm", "torque"]
[0, 0],
[500, 125],
[1000, 192],
[2000, 130],
[3000, 140],
[4000, 145],
[5000, 155],
[6000, 195],
[7000, 185],
[8000, 195],
],
"turbocharger": {
"wastegateStart":12,
"wastegateLimit":14,
"maxExhaustPower": 8000,
"backPressureCoef": 0.000065,
"bovSoundVolumeCoef": 1.0
"frictionCoef": 1.5,
"inertia":56,
"pressurePSI":[
//turbineRPM, pressure(PSI)
[0, -1],
[30000, 0],
[40000, 2],
[50000, 4],
[60000, 6],
[70000, 10],
[90000, 12],
[100000, 14],


],
"engineDef":[
//engineRPM, efficiency, exhaustFactor
[0, 0.2, 0.0],
[250, 0.65, 0.55],
[500, 1.0, 1.0],
[800, 1.0, 1.0],
[1300, 0.95, 1.0],
[1700, 0.9, 0.95],
[2200, 0.65, 0.85],
[3000, 0.35, 0.7],
],


},
"engine":{
"idleRPM":850,
"shiftDownRPM":2900,
"shiftUpRPM":5300,
"maxRPM":5800,
"inertia":0.16,
"friction":24,
"brakingCoefRPS":0.15
"burnEfficiency":0.28
"throttleSensitivity":1.1
"torqueReactionNodes:":["e1l","e2l","e4r"]
},

Here is the transmission setup.

}
"van_transmission_6A": {
"information":{
"authors":"BeamNG",
"name":"6-Speed Automatic Transmission",
"value":600,
}
"engine":{
"transmissionType":"automatic",
"lowShiftDownRPM":1500,
"lowShiftUpRPM":2700,
"highShiftDownRPM":3000,
"highShiftUpRPM":5300,
// -1, 0 (neutral), 1, etc
"gears":[-3.2, 0, 3.63, 2.44, 1.83, 1.32, 1.0, 0.80]
"clutchDuration":0.75
"viscousCoupling":12
"lockingTorqueLimit":1400
"enableLocking":true
},

Here is a video of it doing what i'm describing.



Am I missing something that should be edited in the jbeam file?


I tested again and lowered max boost to around 8 PSI and it will shift but I can tell its on the verge of slipping.

Thanks in advance.

 

Try increasing viscousCoupling. I haven't used automatic transmissions much, but I think that's closest to clutch stiffness with them.

 

Increase clutchTorque to the max torque the turbo will provide.

 

I noticed some have "clutch torque" and some have "viscousCoupling" I'm guessing "clutch torque" is for manuals and "viscousCoupling" is for the automatics for clutch stiffness?

 

No, clutchTorque is often set on the root engine part for many vehicles and not in the transmission or tuning packages, you can add it to your turbo if you wish. It is used for all transmission types.

viscousCoupling is actually more related to power being sent between the differentials of the vehicle.

 

So what should I increase so it won't slip?

 

Add clutchTorque to the transmission or engine. It seems it's used for automatics too. If it's not defined, it defaults to the highest torque value in the torque curve, but that doesn't take turbo into account.

Low viscousCoupling makes the clutch slip too, more at low engine RPM.

 

Thanks Miura adding "clutchTorque" to the V8 jbeam engine file, fixed the slipping.

Since we are on transmission subject what does "lockingtorquelimit" define?

 

Also another question, what unit is back pressure measured in?