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Monster Rock Crawler. . My latest Rock Crawler. Motor on Axle style and uses 3NXT motors, plenty of torque and grip to climb up over 45 degree inclines. Warning: Not for lego purists ! . A motor on axle style rock crawler that also looks like a monster truck. Driven by 3 High torque NXT motors it is not purely lego. Traxxas MUD tires, 3kg servo, Spektrum receiver, and Futaba DC speed controller. I've cut the NXT cables and directly connected the motor wires to the DC speed controller. Specs Weighs 1.2 kg Wheel base 12 inch Length 16 inch Width 8.4 inch Height 8.5 inch Ground clearance 4.6 inch ! Wheel diameter 4.3 inch / 110mm Battery Lithium polymer Nanotech 8.4v Front 4 Link joint for extreme articulation Simple Independent suspension, average articulation but twice the amount of torque ! Front motor on axle with Hobby Servo. Front and Rear portal axles. All differential locked it just keeps going. This is actually my 5th or 6th rebuilt with the previous ones being driven by a hobby Brushless motor. However the live axles kept breaking under heavy torque and had to go for direct drive, MOA. HISTORY of build Here are the live axle versions of the build powered by a 28mm 905kv brushless motor. Plenty of torque but power loss from live axles and gears made unreliable. Thanks for viewing !!


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