Why a Planetary Gearmotor? In combat robotics, drive motors are exposed to repeated shock loads, sudden reversals, and side impacts that quickly reveal the limits of traditional spur gearboxes. Planetary gearboxes distribute load across multiple gears and through a rigid carrier and ring, significantly improving impact resistance while increasing torque capacity within the same diameter envelope. The Turnabot N30 Planetary Gearmotors are built around a true 12mm all-metal planetary gearbox, offering a substantial durability upgrade over spur gear motors of similar size. This design helps resist shaft bending, gear tooth shear, and retention failures that commonly end matches early. The N30 Advantage: Torque, Thermal Mass, and Match Reliability If you’re building a drivetrain that needs to keep delivering deep into the match—after repeated hits, repeated reversals, and repeated wall slams—the N30 size brings meaningful advantages. With weights starting at 17.8g, the N30 format provides additional torque capacity and thermal mass compared to smaller options, improving consistency under sustained load and higher current draw. Two N30 Variants: 2S Torque vs 3S Endurance Turnabot offers two N30 variants tuned for different use cases: TB N30 2S: A high-torque “monster” option designed to deliver enormous push and control on 2S, with correspondingly higher current demands. TB N30 3S: Optimized for 3S use, emphasizing improved endurance and thermal headroom at higher voltage—ideal when you want more battle time and sustained performance. Output Shaft and Wheel Retention Each N30 planetary gearmotor features a robust output shaft with a machined retention groove and ships with a circlip for secure wheel retention. This system dramatically improves resistance to wheel loss under weapon hits and wall impacts, a frequent failure mode for small drivetrains and smooth-shaft designs. Speed, Torque, and Electrical Considerations The Turnabot N30 Planetary Gearmotors are available in multiple speed options to support different drive styles and chassis layouts. Published RPM values should be considered typical measured performance under standard conditions; engraved motor markings may not reflect final output speed once installed in a planetary gearbox or operated at different voltages. Manufacturer testing and recommendations frequently reference Malenki HV brushed ESCs for N30 applications. Other brushed ESCs may also be used, provided their voltage capability and current handling are appropriate for the selected motor variant and battery configuration. For multi-motor drivetrains and/or higher voltage operation, higher-current ESC solutions may be required. Always verify ESC and battery specifications when designing your drivetrain.
