/// This is the joint which connecting the Pelvis segment to the bike.

AnyRevoluteJoint BikeGroundJoint ={

  Axis = z;

  AnyRefNode & crank  = .BikeModel.BikeFrame.SaddelPos;

  AnyRefNode & ground = .GroundNode;

};

AnyKinEqSimpleDriver BikeGroundRotation = {

  AnyRevoluteJoint &Jnt = .BikeGroundJoint;

  DriverPos = {0};

  DriverVel = {0};

  //Setting Reaction.Type=1 means that the joint will generate the moment it will 

  //need to balance this DOF, setting it to 0 which is default will mean that muscles 

  //forces will be used for balancing the joint

  Reaction.Type = {On}; 

};