Ball Diameter | +/- | |||
---|---|---|---|---|

Ball Mass | +/- | |||

Ball MOI RatioRatio of MOI to mass times radius squared. 2/5 for a solid sphere, 2/3 for a hollow sphere, 1/2 for a solid cylinder, 1 for a hollow cylinder. |
+/- | [-] | ||

Ball StiffnessStiffness of the ball. This should be evaluated as a shock condition and near the amount of compression in the case of nonlinear balls (which, practically any ball will be) | +/- | |||

Wheel Gap | +/- |

Wheel Diameter | +/- | |||
---|---|---|---|---|

Wheel MOI | +/- | |||

COF Wheel | +/- | [-] | ||

Flywheel Target Velocity | +/- | [-] |

Motor

# MotorsHow many motors do you have in total for this mechanism (assuming they're identical, and geared together) | ||
---|---|---|

EfficiencyEfficiency of the transmission | ||

Free SpeedThe maximum RPM of the motor | [RPM] | |

Stall TorqueThe maximum torque of the motor, occurring at 0 RPM | [N-m] | |

Free CurrentThe current drawn when the motor is unloaded | [A] | |

Stall CurrentThe current drawn at 0 RPM / Max Torque | [A] |

Gear RatioThe overall gear ratio. Larger than 1 is a reduction, smaller is a RPM increase. Empty cells are assumed to be 1. You can either blank out all the cells, and plug in a number in the top right one, or build a ratio by typing in the number of teeth on each gear (or belts/sprockets) starting from the motor.

: | ||

: |

Wheel Diameter | +/- | |||
---|---|---|---|---|

Wheel MOI | +/- | |||

COF Wheel | +/- | [-] | ||

Flywheel Target Velocity | +/- | [-] |

MotorIf geared to bottom, a positive number indicates spin in the reverse direction (wheels both propelling) while a negative indicates spin in the reverse direction (top wheel providing excess backspin)

# MotorsHow many motors do you have in total for this mechanism (assuming they're identical, and geared together) | ||
---|---|---|

EfficiencyEfficiency of the transmission | ||

Free SpeedThe maximum RPM of the motor | [RPM] | |

Stall TorqueThe maximum torque of the motor, occurring at 0 RPM | [N-m] | |

Free CurrentThe current drawn when the motor is unloaded | [A] | |

Stall CurrentThe current drawn at 0 RPM / Max Torque | [A] |

Gear RatioThe overall gear ratio. Larger than 1 is a reduction, smaller is a RPM increase. Empty cells are assumed to be 1. You can either blank out all the cells, and plug in a number in the top right one, or build a ratio by typing in the number of teeth on each gear (or belts/sprockets) starting from the motor.

: | ||

: |

Exit Velocity | +/- | |||
---|---|---|---|---|

Exit Ball RPM | +/- | |||

Exit Wheelspeed (Top) | +/- | |||

Exit Wheelspeed (Bottom) | +/- |

The plot displays the run with the highest exit velocity, and lowest exit velocity.

Click on the plot to probe particular points for values.