EveryCalc
Hood and Wheel Pitcher
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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 +/-
Bottom Wheel
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.
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Top Wheel
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.
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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.

Launch Simulation
Position [] Ball Velocity [] Ball Spin [] / Lower [] Upper [] / Flywheel Speed