Taigen 3.1 is 39:1 ratio
Taigen 4.1 I think is 89:1 ratio
Most Tamiya are 59:1 ratio
Mato are 69:1 ratio
Henglong I think are 29:1 which is why they have no control
All the motors vary. Henglong come with 280 crappy motors. Taigens come with either 380 or 390 motors or you have to order separate.