Hirobo HI0304127 - Pinion Gear 12T Compatible with Embla EB (3mm Shaft)  [HI0304127]

12T Pinion for Embla EB Explained

This pinion is a direct replacement option for the Hirobo Embla EB series, catalogued as HI0304127. The 12-tooth cut is intended to mesh with the model's main spur gear and is sized for a 3mm motor shaft. It is supplied as an RC helicopter drivetrain part.

Installing on models that use a 3mm shaft is straightforward: slide the pinion into position and secure with your model's fastening method. After installation, inspect gear mesh and alignment to prevent accelerated wear and to ensure no interference with adjacent components.

Setup advice: swapping to a 12T pinion will influence the driven gear speed and torque characteristics. Always verify pinion-to-spur contact, clearances, and system responsiveness after changes. Periodic checks and light tooth lubrication will keep engagement smooth.