Hirobo HI0301049 XRB Blade Balancer  [HI0301049]

Blade balancer for RC helicopters

This Hirobo XRB blade balancer is an RC-scale accessory intended for checking and improving the static balance of rotor blades used on RC helicopters. It helps identify heavy points along the blade span so pilots can make small weight or trimming adjustments before flight, reducing vibration and improving control response during hover and low-speed manoeuvres.

The unit is a simple bench tool used during maintenance or setup; blades are placed on the balancer's spindle so the blade can rotate freely and settle to its low point. By noting which side drops and adding minimal counterweights or removing material, users can bring the blade to neutral balance. The tool's role is diagnostic and tuning-focused, it does not alter blade geometry.

Installation and use are straightforward: mount the blade on the balancer spindle with the blade root supported, allow it to settle, note imbalance, and repeat adjustments until the blade remains level. Use steady hands and a flat work surface to avoid false readings, and handle rotor blades carefully to avoid damage to edge profiles or pitch links.