This purpose built helical gear transfer box was specifically designed for rear engined off-road race cars.
This lighter unit weighs 30KG which is approximately half the weight of a LT-230 Rover transfer box and represents a weight saving of 28KG (63lbs). It provides nine quick change gear ratios ranging from 2.067 : 1, up to 1.31 : 1, and importantly it reverses the output rotation, which means you do not have to turn the axles over to achieve 5 forward gears and one reverse.
Transfer boxes can be supplied with any of the nine ratios on the change gear chart. For example if you decided on change gears 34T and 36T these would give transfer box ratios of 1.74 : 1 if the 34T gear was installed in the top position and the 36T gear to the bottom, or 1.55 : 1 with the gears fitted the other way around. Other gears are available should your first ratio calculation be a little off the mark. Subsequently, a known suitable gear ratio can be installed for a particular event.
The most common transfer boxes are part no. KK2188RF, and KK2188RM. The ‘R’ means right hand output, the ‘F’ and ‘M’ stand for female and male input shaft respectively. For example a transfer box with a female input shaft would accept the 10 spline mainshaft of a LT-77 or R380 gearbox, the male input shaft would be coupled to a torque flight 3 speed automatic mainshaft to make the overall gearbox - transfer box length as short as possible.
All transfer boxes require a fitting kit to locate them to the main gearbox, fitting kits are listed on the price list and consist of a heat treated aluminium adapter, mainshaft coupler, location dowels, oil seals and level plugs, and all associated fasteners.
In addition to ‘standard’ transfer boxes and fitting kits we also offer alternative propshaft flanges, cv joint flanges and three leg spider type couplings which accepts the ‘GKN’ rubber propshaft joint.
