T-REX 700 Tail Drive Gear Ratio With Main Rotor Speed Table:

Main Blades Tail Blade RPM approx. Tail Drive Gear Front Drive Gear Drive Gear Ratio
700 106 2150 ~ 2200 RPM 102T 23T 8.46/1/4.43
700 106 2000 ~ 2150 RPM 104T 22T 8.46/1/4.73
700 106 1900 RPM 105T 20T 8.46/1/5.25
For your safety, please pay attention to the above 2200 RPM, incorrect excess 2200 RPM may result in damage to the helicopter or injury the porperty of others.



Instruction:
●Use for T-REX 700X/760X/800E.
●Brand new high drive gear ratio is designed especially for F3C & slow 3D flight with superior tail lock and precise flight performance. (Suitable for head speed at 1900RPM)
●To make sure to get the best effect, it must be used with whole set.
●Gear Ratio 1:5.25

Specification:
●105T M1 Autorotation tail drive gear set x 1
●20T M1 Front drive gear assembly set x 1