This kit contains a set of gears and gearwheels, allows an accurate setting of the transmission ratio, function of the track requirements.
primary transmission :
gears 34 / 35 / 36 / 37 dents
gearwheel 58 dents
secundary transmission :
gears 23 / 24 dents
gearwheels 73 / 74 dents
Recommended ratio : 34/58 and 24/73
