The weapon motor for variant is badass 2315 1480 KV. Since the bot will be utilizing a 4S battery, that means my operational voltage for the weapon motor will be roughly 16 volts. The motor should spin at roughly 29, 440 RPM. This speed is not very usable, so an additional reduction will be needed to the weapon pulley.
I want to keep the weapon speed under 10,000 RPM. To achieve this angular velocity I will need to reduce the motor speed roughly three times.
I intend on using a 2L belt to transfer power between the weapon motor and weapon hub. The minimum diameter for a 2L pulley is 0.8 in. If this minimum value was used, the weapon pulley would have to be 2.4 in to create the three to one ratio.