The third Tamtech family is completely different from the first two, the main differences being:
– the scale is 1/14th compared to the 1/24th scale of the first two families,
– the electric motor is RK-370SD which is more powerful than the FK-180SH Mini-Black installed in the first two families,
– on-board electronics “C.P.R.” or “Control Processing Reveiver” (servo + receiver + integrated speed control) is more powerful to adapt to the new higher performance engine,
– the remote control is the Futaba Megatech/Magnum Jr. FP-2PB compared to the Futaba Attack of the first two families. Both remotes are customised with the Tamiya logo,
– the battery pack consists of 4 AA series and
– mimics Formula 1 cars.
Three models are equipped with the Tamtech F1 chassis, these models are available in two versions:
– ready-to-run solution in which the package includes remote control, “C.P.R.” or “Control Processing Reveiver” on-board electronics (servo + receiver + integrated speed control) P-05DB, complete chassis to be built, bodywork to be painted and completed with stickers. The remote control is of Futaba origin in the “Megatech/Magnum Jr. FP-2PB” version, includes the receiver incorporating the speed control and separately the micro servo for steering.
– Only machine in which the package includes complete chassis to be built and bodywork to be painted and completed with stickers.
List of models released for sale:
– Ferrari 643 released for sale in 1992: code number 47008 car ready to race complete with electronics – remote control – battery and code number 48008 car only. The bodywork is red to be coloured and completed with stickers.
– Lotus Type 102B released for sale in 1992: part number 47009 ready to race car complete with electronics – remote control – battery and part number 48009 car only. The bodywork is in white colour to be coloured and completed with stickers.
– Mc Laren MP4/6 Honda released for sale in 1992: part number 47010 ready to race car complete with electronics – remote control – battery and part number 48010. The bodywork is in white colour to be coloured and completed with stickers.
Other part numbers are available:
– Ferrari 643 bodywork code number 40021
– Lotus Type 102B bodywork code number 40027
– MC Laren MP4/6 Honda bodywork part number 40029
– spare electric motor RK-370SD part number 40022
– replacement differential complete with pinions, part number 40023
– rubber replacement front wheels (2 pcs), part number 40024
– rubber replacement rear wheels (2 pieces), part number 40025
– set of spare rims (2+2 pieces), part number 40026
– TAMTUNED RK-370 engine, part number 45028
The main features of this design are:
– transmission on the two rear wheels,
– central double-shell chassis housing the speed control receiver and steering servo,
– rear system housing RK-370SD motor and transmission with differential,
– the independent front suspension acts directly on the steering knuckle.
– The rigid axle rear suspension acts between the central shell and the rear drive unit. The rear mono-shock absorber echoes what was seen on the Racing Master chassis in the MK5…7 version. The guaranteed travel is minimal, but sufficient for such a compact model,
– rack and pinion system for the front steering,
– four AA battery pack,
– innovative system of motor speed control via the C.P.R. control unit, which stands for ‘Control Processing Reveiver’; an electronic board comprising the receiver and integrated motor speed control. The control unit allows proportional movement forwards and backwards. The electronics are equipped with a safety system against short-circuiting and overheating. The safety system stops everything when the machine is used on heavy surfaces and the motor gets too hot. It is necessary to wait for the system to cool down before it can be used again, average time 15 minutes. Surfaces to be avoided are turf, carpets and surfaces covered with fine sand; for correct operation, prevent dirt from accumulating on the transmission, gears and differential. The power unit is delicate and suffers when exposed to rain and water,
– the four wheels are made of rubber and help absorb the roughness of the track.
The dynamic balance found with the Road Wizard, F101, Racing Master MK 5…7 and Group C chassis is managed by a rigid front end to ensure the right handling and a flexible rear end to guarantee the right traction. With this Tamtech chassis, Tamiya has replicated the same approach and the model takes up the design scheme of the Group C chassis: the central plastic shell is connected to the rear traction and front steering system. The rear system is formed by the motor-differential and is connected to the plastic shell by an FRP plate (highlighted in blue in the picture) that guarantees sufficient elasticity to absorb the roughness of the track. The front is completed by an FRP plate that stiffens the front suspension (highlighted in red in the picture).