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 Diameter | +/- | |||

Wheel MOI | +/- | |||

Hood Gap | +/- | |||

Hood StartAngle that the hood starts at, with respect to vertical. A larger value would mean the hood wraps around more. |
+/- | |||

Hood EndAngle that the hood ends at, with respect to vertical. This would be the same as the release/departure angle with respect to the horizontal. A larger value would mean that the hood wraps around less, and creates a more vertical shot. |
+/- | |||

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

COF Hood | +/- | [-] | ||

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

Motor

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

ResistanceResistance value. You could find this empirically using this tool by guessing values until the idle current matches your shooter. |
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Raw Motor | Adjusted | ||

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.

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

Exit Angle | +/- | |||

Exit Ball Spin | +/- | |||

Exit Flywheel RPM | +/- | |||

Time to Recover | [s] | |||

Current to Recover | [A-s] | |||

Time to Revved | [s] | |||

Current to Rev | [A-s] | |||

Idle Current | [A] |

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

Click on the plot to probe particular points for values.