Lepton Lex Main Pulley 56T - HI0304024 by Hirobo  [HI0304024]

Lepton Lex 56T Main Pulley Summary

This Hirobo HI0304024 main pulley fits the Lepton Lex range and features a 56T tooth count as shown in the part name. As a drivetrain part for scale RC helicopters, the pulley meshes with the main drive gear and affects the final gear ratio, mesh quality, and load transfer through the transmission path.

Installation notes: Inspect the mating spur and pinion for wear before fitting, confirm axial alignment and correct mesh to prevent premature wear, and secure the pulley using the airframe's original fastening method. Check surrounding ball bearings and shafts for endplay that could alter gear engagement. Small mesh and backlash adjustments are normal after initial running.

Tuning role: Changing the main pulley tooth count changes overall gear ratio and rotor RPM for a given motor speed; a 56T pulley is one option when matching desired rotor characteristics to motor and ESC settings. When you alter pulley sizes, re-evaluate tail rotor drive and collective response as part of the setup.

Maintenance: Inspect tooth profiles for chipping or deformation, keep the gear interface free of debris, and replace the pulley if wear affects mesh stability. Routine pre-flight and post-intensive-session checks help keep drivetrain behavior consistent.