• Little Aussie Racing Cars: For when three-wide around a hairpin isn't quite close enough.
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. If you have any questions, please don't hesitate to ask. There's no such thing as a stupid question.

Tricycle - Power only the rear wheel

Discussion in 'Racer Physics and Technical' started by ZkidMarkZ, Jul 10, 2013.

  1. ZkidMarkZ

    ZkidMarkZ

    Messages:
    50
    Ratings:
    +3
    Hi,
    As the title says I'm making a tricycle and I am trying to make the power from the engine to only drive the rear wheel, "wheel2" (there are two wheels in the front). I have set output0 = 2 but the engine still sends power to the front-left wheel as well..
    Can anyone help?
    Thx in advance
     
  2. aadilf1

    aadilf1

    Messages:
    714
    Ratings:
    +164
    powered=0
     
  3. ZkidMarkZ

    ZkidMarkZ

    Messages:
    50
    Ratings:
    +3
    I tried adding that that to the wheels:
    Code:
    wheel0~wheel_common
    {
      powered=0
      ...
    }
    wheel1~wheel_common
    {
      powered=0
      ...
    }
    but i still drives at least the left front wheel as well.
    My differentials look like this:
    Code:
    differential
    {
      type=4
      inertia=0.05
      locking_coeff=100
      output0=2
    }
    differentials
    {
      count=0
      diff0
      {
        type=4
        inertia=0.05
        locking_coeff=100
        output0=2
        friction=0
      }
    }
    And my suspension looks like this:
    Code:
    susp_front~susp_default
    {
      z=0.9254
      roll_center
      {
        x=0
        y=0
        z=0
      }
    }
    susp_rear~susp_default
    {
      z=-0.4755
      k=100000
      bump_rate=10000
      rebound_rate=10000
      roll_center
      {
        x=0
        y=0
        z=0
      }
    }
    susp0~susp_front
    {
      y=0.0287
      x=0.2695
    }
    susp1~susp_front
    {
      y=0.0287
      x=-0.2695
    }
    susp2~susp_rear
    {
      y=0.0287
      x=0
    }
     
  4. Alexander Knoll

    Alexander Knoll
    NEVER GIVE UP!!

    Messages:
    1,417
    Ratings:
    +286
    do you have....

    wheels=3

    in the head of your car.ini?
     
  5. ZkidMarkZ

    ZkidMarkZ

    Messages:
    50
    Ratings:
    +3
    yes I do. Are you sure it should be possible to do?
     
  6. Alexander Knoll

    Alexander Knoll
    NEVER GIVE UP!!

    Messages:
    1,417
    Ratings:
    +286
    it is...but the way i got it a longe time agoo was with a "faked" 4 wheeler....
     
  7. ZkidMarkZ

    ZkidMarkZ

    Messages:
    50
    Ratings:
    +3
    ok. I did that as well now :) Maybe someone finds a solution in the future!
     
  8. Alexander Knoll

    Alexander Knoll
    NEVER GIVE UP!!

    Messages:
    1,417
    Ratings:
    +286
    yep maybe...
     
  9. Mr Whippy

    Mr Whippy

    Messages:
    2,977
    Ratings:
    +455
    I've never tried this, but did you try output0=2 and output1=2?

    A weird other solution is to create the 4th wheel/suspension but have it floating up near the car CofG, give it zero mass, zero inertia etc, and then run a locked differential.

    Hmmm

    Dave
     
  10. ZkidMarkZ

    ZkidMarkZ

    Messages:
    50
    Ratings:
    +3
    The first solution seem to work! Thanks a lot :) Now on to the biggest mystery of them all.. Getting the Materials on the 3D-model correct ;)