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  1. Hello everyone! It has been a while since I last posted on this forum. In November I tripped to Russia again for participating LEGO event held in Moscow. This year, my friend Rm8 gave me the opportunity to make video review of my models together at his studio. You might have seen the review of Jeep Wranglers. And this is the other model that I first had a presentation to Russian builders in the event. Toyota Land Cruiser 80 Weight: 1520g -XL motor for propulsion -Servo motor for steering -M motor for front winch -M motor for two speed gearbox and center/rear differential lock -LEDs for front and rear lights Everything started from the issue of center differential in the drivetrain of my previous Pickup. After driving on serious off-road I found that bevel gears in center differential got damaged and often slipped. So I tried to find the way to reinforce gear meshing in 4L differential. In conclusion, I still have not succeeded. Every attempt was not strong enough for transmitting the torque of geared down (3:1) XL motor. In extreme situation floating fourth bevel gear was pushed out by the force of twisting differential housing. I was even hoping new red 4L differential could hold four bevel gears tightly in it, but it does not. So I used the second one in the picture above. (just insert 1L technic brick for holding both side of axles tighter) While attempting several ideas of transmission, I was building another 4x4 model using three differentials. Eventually it became the most advanced version of my SUV models yet being over complex and less reliable. The main feature is sequentially working gearbox and diff lock system. I used Didumos69's Compact 90 degree stepper idea for switching four modes. (0→1→2→3→0 ...) 0: high gear 1: low gear 2: low gear with center diff lock 3: low gear with center/rear diff lock You can see it working in the second half of this video filmed by Rm8. I used M motor instead of Servo motor for switching modes because there was no space for it under the driver's seat. It is necessary to stop motor rotation when stepper axle comes to the right position. Actually this model is too heavy for real off road driving. Center differential often suffered the load, and it was a little bit tricky to operate sequential mechanism precisely from a distance. So I built a lighter and simplified version only using XL and Servo motor. It has softer rear suspension, manual gearbox and center/rear limited slip differential. (Weight: 1260g) Ironically it worked better than fully equipped version even lacking diff lock system. Thanks to soft suspension it has better axle articulation. All four tires well kept contact with the ground. I put it on rocky surface just for taking pictures. Actually it could not climb over those rocks, though. I am making building instructions for both versions. I hope you will like it!