Tail Speedup Gear Design
Although this design is heavier and uses more parts, a simple test can prove its value. If you hold the main rotor and turn the tail rotor with force, our belt will not skip tooth.

Ultra Low Belt Speed
Tail drive belt only turns 1.9 times when main rotor turns once. This ultra low belt speed design equal extend belt lifetime. (Calculated with MXL38T main belt drive gear and MXL 20T tail gear. 38/20=1.9)