Front wheels spin too fast, 300+mph in under 2 seconds

Im moding a rear wheel drive car to be a All wheel drive car, I simply added a front differential to the setup. below is the Rear diff and front diff code.




Rear Diff (works as intended)

Code:

    ],
    "powertrain" : [
        ["type", "name", "inputName", "inputIndex"],
        ["shaft", "wheelaxleRL", "differential_R", 1, {"connectedWheel":"RL", "breakTriggerBeam":"axle_RL", "uiName":"Rear Left Axle", "friction":2}],
        ["shaft", "wheelaxleRR", "differential_R", 2, {"connectedWheel":"RR", "breakTriggerBeam":"axle_RR", "uiName":"Rear Right Axle", "friction":2}],

Front Diff (spins at 6x the speed of rear wheels) 300+mph in under 2 seconds then pops

Code:

   
    ],
    "powertrain" : [
        ["type", "name", "inputName", "inputIndex"],
        ["shaft", "wheelaxleFL", "differential_F", 1, {"connectedWheel":"FL", "breakTriggerBeam":"axle_FL", "uiName":"Front Left Axle", "friction":2}],
        ["shaft", "wheelaxleFR", "differential_F", 2, {"connectedWheel":"FR", "breakTriggerBeam":"axle_FR", "uiName":"Front Right Axle", "friction":2}],

What would cause this? I simply added the front diff, no other drivetrain code has been touched.

 

you may need a transfercase and and appropriate rear driveshaft for the transfercase

 

ok cool where would I set the transfercase, would it be in the transmission or a separate setup?

 

it could be in the transmission

 

Ok I just looked at the hill climb drivetrain I’ll try to model mines after that