AM planetary gearbox with fisher price

[Tom Line]

jp, if you'd like to find out whether it will work for the shooter, do this.

Talk to your physics teacher (or someone who knows basic trajectory physics) and figure out how fast and at what angle you need to launch a ball to make it travel the distance you'd like.

Next, you need to make your shooter wheels spin at the appropriate speed. If you know the free speed of the motor you are using (FP, around 19600 RPM) and the gear ratio 3.67:1, then at full speed it will spin your wheels at Free_Speed *.8 (80% efficient) / 3.67 = RPM.

Next, if you know the diameter of the wheel you are using, you can calculate the circumference, and use that plus the RPM to calculate the surface speed of the wheel.

Since, theoretically at least, the ball will leave the shooter at the rate the wheel is spinning, you can now figure out if your wheel will be going fast enough to shoot the ball the distance you need.