Main Shaft Drive Assembly for WLtoys XK K270 UH-60L Black Hawk

Eliminate Vibrations and Gyro Interference

Even a microscopic bend in the main shaft can cause high-frequency vibrations that confuse the flight controller, leading to "toilet bowl effect" or altitude hold issues. This WLtoys K270 Main Shaft assembly solves drivetrain instability, providing a perfectly true axis of rotation. Replacing a stressed shaft restores the surgical precision needed for smooth 4CH scale flight and protects your main motor from premature wear. Ships worldwide.

Product Highlights

• Hardened Stainless Steel: Engineered to resist bending during high-torque brushless maneuvers and rough landings.

• Pre-Drilled Precision: Features factory-aligned holes for the rotor head bolt and main gear pin, ensuring perfect mechanical timing.

• Ultra-Smooth Finish: Polished surface reduces friction within the main frame bearings, leading to quieter operation and longer battery life.

• Vibration Dampening: Ensures the 4-blade rotor head spins on a centered axis, crucial for maintaining scale flight aesthetics.

Compatibility

For the WLtoys XK K270 UH-60L 4CH Brushless RC Helicopter only.
Full model page (specs & photos):
https://www.kidstoylover.com/products/wltoys-xk-k270-uh-60l-black-hawk-4ch-brushless-rc-helicopter-altitude-hold

What’s in the Box

• 1 x Precision Main Shaft Assembly

Install Tips

• Bearing Check: Before installing the new shaft, spin the frame bearings with your finger; if they feel "gritty," replace them at the same time for the best results.

• Main Gear Pin: Ensure the locking pin is centered when securing the main gear to the shaft to prevent it from rubbing against the helicopter's frame.

• Zero Play: Adjust the locking collar so there is no vertical "shucking" of the shaft, but ensure it can still spin freely without binding.

Support & Warranty

• Expert help to choose the right WLtoys XK K270 spare parts
• 3-month warranty on manufacturing defects
• Ships worldwide

Other Related Parts

Need gears, shafts, servos, LEDs, batteries and more? Browse the full WLtoys XK K270 spare parts collection:
https://www.kidstoylover.com/collections/wltoys-xk-k270-rc-helicopter-spare-parts-accessories