The new Arrma Big Rock 3S BLX RC car model in 1:10 scale is ideal for the most difficult terrain. Thanks to the powerful AC motor, the model reaches a speed of up to 80 km/h. Driving time is approximately 20 minutes (with LiPo battery 5000 mAh). New RC kit Spektrum SLT3 2.4GHz.
Arrma Big Rock 3S BLX 4WD RTR Monster Truck RC Car Model. It has a stronger chassis, a more powerful servo, a transmitter with an ergonomic grip for fatigue-free driving, a steering wheel with a foam rim for precise control.
New drivers can set their throttle limit to 50% or 75% until they are ready to use their full speed potential. The SLT3 transmitter is compatible with Tactic SLT receivers for running older Arrma RTR cars and has a third channel to control optional functions such as lights and winches. Powerful Spektrum Firma 3660 3200kV AC motor, Arrma BLX100 waterproof controller with fan and 3S LiPo support, Spektrum SPMS651 servo control with metal gears. RC kit Spektrum SLT3 2.4GHz.
The RC model of the Big Rock 4×4 car surprises with its tenacity and durability and is also suitable for demanding terrains. The all-wheel-drive monster truck is equipped with a powerful Spektrum Firma 3660 AC motor that provides the model with an endless stream of power. The rear support wheels prevent the model from tipping over during acceleration. The regulator with support for 3S LiPo batteries provides the option of choosing between three driving modes, just choose and start racing.
Features:
- 4×4 all-wheel drive,
- max. speed up to 80 km/h,
- transmitter Spektrum SLT3 2.4GHz,
- AC regulator BLX100 with three driving modes,
- receiver Spektrum SLR300 2.4GHz FHSS,
- friction clutch with three plates,
- servo steering with servo-saver,
- adjustable wheelie wheels,
- differentials with metal gears,
- dBoots RAGNAROK MT tires,
- spoke wheels 2.8" 14mm hex,
- oil shock absorbers,
- chassis side covers,
SLT3 transmitter
Basic 3-channel Spektrum SLT3 2.4GHz steering wheel transmitter, compatible with SLT and DSMR protocols and with FHSS modulation. The light weight of the Spektrum SLT3 transmitter allows you to hold it without fatigue. The steering wheel is covered with a foam rim for a firm grip. The layout of the controls is practical and intuitive - all controls are located so that they are quickly accessible when needed. A secure loop is provided for attachment to the strap.
- Spektrum 3-channel steering wheel RC kit for reliable control;
- combines SLT 2.4GHz protocol security with Spektrum quality for reliability;
- proven Spektrum transmitter ergonomic design for comfortable, fatigue-free holding;
- adjustment options: throttle limit, throttle and steering trims, 3-way switch of the 3rd channel, servo reverse and steering servo travel;
- it has a non-slip foam-covered steering wheel and a loop for attaching the transmitter.
SLR300 receiver with SLT FHSS protocol
The SLR300 3-channel receiver is equipped with SLT FHSS 2.4GHz, anti-interference technology. It is compatible with Spektrum SLT transmitters and is backwards compatible with Tactic steering wheel transmitters.
New IC3 connectors
The new IC3 connectors have a modern design with an emphasis on safety and simplicity. The contacts are made of gold-plated pins and sockets.
As already mentioned, the connectors have been designed with an emphasis on safety and ease of use. The connectors cannot be reversed, the contacts and soldered connections are covered with a plastic cover. The IC3 connector is backward compatible with the EC3.
Digital servo control Spektrum SPMS651 MG
The new S651 MG directional servo has 15% more torque than the previous ADS-7M servo. It is waterproof, has metal gears and a torque of 7.27 kg.cm at 6V.
Motor Spektrum Company 3660 3200kV
The drive unit consists of a Spektrum Firma 3660 3200kV AC motor, which has a large and efficient aluminum radiator with an electric fan. The body is made of aluminum with fins, the output shaft is made of alloy steel and precision bearings. Cables with 4mm gold-plated pins.
- power supply up to 3S LiPo,
- very smooth operation, thanks to the 4-pole design,
- gold-plated connectors for perfect electrical conductivity,
- shaft with a diameter of 5 mm.
Reinforced chassis
Several changes have been made to the chassis for increased stiffness. At the same time, aluminum was used for the retaining plates of the axle pins. The chassis construction is organized into a proven component layout to achieve perfect balance. The drive shaft in the middle, the battery on one side and the electronics on the other. In addition, the entire chassis is equipped with side covers that limit the ingress of dirt into the chassis. The battery is firmly held in place by means of fastening straps.
Larger handle on the drive module
For better attachment and handling of the drive module, the area of the "Pull" plate has been increased.
Pinion with driven gear
The motor can be adjusted when changing the pastor or gear wheel and precisely set the gap between the teeth thanks to the aluminum plate with grooves for fixing the motor.
Ball bearings
All rotating parts are housed in ball bearings. Exposed bearings are protected against dust and dirt by rubber caps.
Servo-saver for servo protection
The model received a new more powerful servo and a new more effective servo-saver was used for its maximum protection. This will ensure a higher degree of impact protection and safer driving.
Splined shafts
As with the 4S version, splined shafts are also used here, which can easily transfer the high power of the AC motor.
Wheels and tires
dBoots RAGNAROK MT tires are glued on MT 2.8" (14 mm hex) spoked wheels. The wheels with a distinctive pattern will give you maximum grip on all surfaces.
Oil dampers
Patented oil shock absorbers absorb every shock of the model. The shock absorbers are equipped with protective covers against impacts on the front side. A change in stiffness and ground clearance is possible with the help of oil viscosity or spacers. Silicone O-rings are used for safe oil retention.
Compact chassis
The chassis construction is organized into a proven component layout to achieve perfect balance. The drive shaft in the middle, the battery on one side and the electronics on the other. In addition, the entire chassis is equipped with side covers that limit the ingress of dirt into the chassis. The battery is secured in place by means of fastening straps.
Wider wheel track
The car is 26 mm wider for more stable cornering and better off-road stability.
Easily accessible engine module
The engine module is removed from the chassis as a complete unit by removing one screw. Includes motor, motor plate, clutch assembly and transmission cover.
Easy disassembly of the electronics module
The electronics module consists of a waterproof receiver box, a servo board and a regulator holder. The unit can be dismantled so it is available for maintenance and service.
Front and rear differential
The model is equipped with a front and rear differential that ensures maximum traction. The differentials are equipped with high-quality metal gears for trouble-free operation. The drive to the wheels is transmitted using telescopic semi-axles.
Solid shock towers
The studs at the ends of the shock absorbers are fixed in the shock absorber towers from both sides, therefore they do not twist and a stronger fixing of the shock absorbers is guaranteed.
Electronic regulator BLX100
The BLX100 AC regulator with a current load of up to 100 A will provide incredible power in combination with 3S LiPo batteries. The built-in fan ensures sufficient cooling even at full load. The controller has driving modes, battery under-discharge protection and overvoltage protection. Adjustable parameters:
- cut-off voltage NiMH/LiPo;
- acceleration in 7 steps. Tip: On slippery surfaces, it is better to use less acceleration to avoid wheel slippage;
- brake power 25%, 37.5%, 50%, 62.5%, 75%, 87.5% and 100%;
- forward/brake/reverse or forward/brake mode;
- direction of motor rotation normal or reverse.
Package contents
The package contains an Arrma Big Rock 3S BLX 4WD RTR RC car model, a Spektrum Firma 3660-3200Kv AC motor, an Arrma BLX100 controller, a Spektrum SPMS651 servo control, a Spektrum SLT3 2.4GHz RC kit and a user manual.
Must be purchased
To operate the model, you need 4x AA batteries for the EM-B1320 transmitter, a 2S–3S LiPo drive battery with a capacity of at least 5000 mAh, or 7 pcs. NiMH battery and adequate charger. The drive accumulator must be fitted with an EC5/IC5 power connector.
Accessories for normal operation
For the normal operation of the Arrma RC car, you need tire glue, screw glue, a tool kit and silicone shock absorber oil.
Tire glue is used to glue the tires to the disc rim. It is always necessary that the tire is firmly stuck to the wheel rim all the way around! If the tire is not glued all the way around, it may tear. Tire glue has a special composition that is able to glue materials such as rubber or nylon, and at the same time, after hardening, the glue is flexible. We recommend Robitronic Tire Glue from our offer, see recommended accessories.
Sometimes it is necessary to add silicone oil to the shock absorbers of the model and change the oil in the differentials. During normal operation, there are only slight leaks of silicone oil on the piston rods of the shock absorber. In the event that the surface of the damper pistons or the condition of the seals is in poor condition, the oil leakage may be large. Repair kits or individual parts are supplied for these cases. From our range of silicone oils, we recommend TLR (Team Losi Racing) silicone oils, see recommended accessories.
For routine maintenance, screw glue is needed. Screws screwed into the metal material (e.g. screws in the motor, set screw in the pinion) must be secured against loosening with this glue.
