Hirobo HI0304127 Embla EB Pinion Gear 12T for 3mm Shaft  [HI0304127]

HIROBO 0304-127 EMBLA EB PINION GEAR 12T / 3MM SHAFT #0304127
Price:
£4.09
Brand:
Hirobo
Model:
HI0304127
GTIN:
4512895156565
Condition:
Brand New
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Product Details: 12T Pinion

This pinion replacement is designed for the Hirobo Embla EB lineup and carries the reference HI0304127. The 12-tooth geometry is made to engage the main spur gear and fits a 3mm motor shaft. It is offered as an RC helicopter drivetrain component.

For models that accept a 3mm motor shaft, the installation process is to slide the pinion onto the shaft and secure it with the existing fixing. Check and adjust gear mesh and alignment prior to first use to avoid accelerated wear or interference with nearby parts.

Notes on tuning: fitting this 12T pinion will alter the effective gear ratio, affecting motor RPM and torque delivered to the main gear. After any pinion change, verify mesh, ensure proper clearance, and confirm servo and ESC behavior. Periodic inspection and modest tooth lubrication help keep the gears running smoothly.

Is this compatible with non-standard Embla EB kits?

Compatibility depends on whether the kit retains the standard Embla EB motor shaft size and gear layout. Confirm your kit uses a 3mm shaft and that a 12T pinion works with your spur gear before purchase.

What checks should I perform after fitting the pinion?

Once fitted, rotate the drivetrain by hand to confirm even tooth contact, check for any binding, and re-evaluate control systems under low throttle before full operation.

Will changing pinion size affect my electronics?

Yes. Altering pinion size changes load on the motor and can affect current draw and temperature. Monitor motor and ESC temperatures after making gear changes and adjust cooling or gearing if necessary.

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