Main Shaft Replacement for RC ERA C189 MD500 RC Helicopter

The Foundation of Stable Flight

A bent main shaft is often the hidden culprit behind mysterious vibrations and poor altitude hold performance. This precision-engineered main shaft solves flight instability by providing a perfectly straight axis for your rotor head and main gear, restoring the factory-smooth performance of your RC ERA C189. Ships worldwide.

Product Highlights

• Hardened Alloy Steel: Built to withstand high torque loads from the dual brushless motors without twisting or warping.

• Micro-Polished Surface: Minimizes friction against the main frame bearings, extending battery life and reducing heat buildup.

• Precision Drilled Holes: Features factory-aligned mounting points for the main gear and rotor hub to ensure a zero-play fit.

• Corrosion-Resistant Finish: Treated with a protective coating to ensure smooth operation in humid or outdoor flying environments.

Compatibility

For the RC ERA C189 Brushless RC Helicopteronly.
Full model page (specs & photos):
https://www.kidstoylover.com/en-us/products/rc-era-c189-dual-brushless-rc-helicopter-1-28-scale-with-gyro-and-altitude-hold?_pos=1&_sid=c54e46d45&_ss=r

Whats in the Box

• 1 x Main Shaft

• 1 x Main Shaft Retaining Nut/Collar

• 1 x Mounting Screw

Install Tips

• Bearing Alignment: When sliding the shaft through the main frame, ensure both upper and lower bearings are seated properly to avoid binding.

• Screw Security: Use a small amount of thread locker on the retaining screws to prevent them from vibrating loose during high-RPM flight.

• Straightness Check: Always verify that the shaft is perfectly straight by rolling it on a flat glass surface before installation.

Support & Warranty

• Expert help to choose the right RC ERA C189spare parts
• 3-month warranty on manufacturing defects
• Ships worldwide

Other Related Parts

Need gears, shafts, servos, LEDs, batteries and more? Browse the full RC ERA C189spare parts collection:
https://www.kidstoylover.com/collections/rc-era-c189-rc-helicopter-spare-parts-accessories