Jacks lock down when reversing, lift up when driving forward
This Renault Magnum has an XL motor for the drive and an M-motor for the steering. When the steering blocks, the coupling changes between locked, where you can latch a trailer onto it and unlocked, which releases the trailer.
I have tried to recreate as many details as possible in this scale (1:25) while maintaining the functionality with a working differential and the dual functionality of the M-motor. The doors open to reveal the interior with seats, steering wheel and center console.
The trailer locks the jacks when it is pushed backward, as seen in the video.
Building instructions
Complete building instructions with parts lists can be found here.
(The instructions below will only lead you to the mpd file, whereas the ones above will present you with a web page that is easy to navigate and features links to bricklink for the individual bricks.)
Magnificient! You really dug deep into this project! Very very well done! I love that trailer and the way it locks to the truck and the truck is to die for! Bravo!
I guess you couldn't squize in two-tire system at the rear... But other than that,, It has lot of perfect details - detailed interior, exterior, power functions... man - this is magnumficant :) :)