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Thread: Goingbush's Electric Vehicle project

  1. #231
    Join Date
    Jan 1970
    Location
    Yea, Victoria, Australia
    Posts
    857
    G’day,

    Is the gearbox and transfer case actually required at all? Could you just get away with the electric motor driving the rear of the car and the transfer case only with front lock and not a low reduction?

    Richard

  2. #232
    Join Date
    Jul 2011
    Location
    Yarrawonga, Vic
    Posts
    4,976
    Quote Originally Posted by dickyjoe View Post
    G’day,

    Is the gearbox and transfer case actually required at all? Could you just get away with the electric motor driving the rear of the car and the transfer case only with front lock and not a low reduction?

    Richard
    My little electric motor is only 88hp and 108ft-lbs of torque , thats not much torque even if it is there from zero, So some form of gear reduction to turn it into useful values, might as well use the existing gearbox and transfer case. Typically I just leave it in top gear high range which is 5.45:1 which is fine for cruising around town but useless in the bush . for V8 killing acceleration High 2nd is good = 12:1

    def need low range for low range 4WDing.

    A Bollinger has 2 speed transfer case for each front and rear motor as well as portal axle reductions.

    Most factory EV cars have something between a 7:1 to 10:1 single / fixed gear reduction .

    this video might help, its in Low range.


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