42082 E Model – Offroad Truck With Manipulator Crane
An alternate model of the #42082 Lego Technic set, featured 4×4 drivetrain with fake engine, steering, lockable leaf suspensions, motorised outriggers, manipulator crane and two ways tipper, with openable elements and building instructions.
After developing the C and D-model for the 42082 set, I took a break to work on designing other machines, but returned to focus on this set after some months. I discovered a nice C-model build of the 42082 which inspired me, but it included some parts not included in the original set. Initially, I wanted to design a Unimog, but the result would have been too similar to existing designs seen on the Lego Technic Channel, so I decided to search for another truck. I settled on the goals of designing an off-road truck equipped with operable tools like a crane or tipper. I found the Gaz Sadko, which was a perfect fit for my requirements. The chassis, nose and cabin looked proportionally large enough to fit Power Functions within the model.
The first C-model I designed for the 42082 set has two motorized functions. The D-model has four, and this E-model will have one more, for a total of five motors. There are many non-motorized details as well. Starting with the manual functions, the truck’s steering is operated by the beacon atop the cabin, which also rotates the steering wheel. The engine rotates under the openable hood, and the doors operate as well.
This truck is equipped with a lockable leaf spring suspension system. The 42082 set does not include any springs, so I’ve used Technic axles which are somewhat elastic under load. To prevent the suspension from sagging over time while the vehicle is on display, orange pinbushes lock the suspension to the chassis. The suspension’s travel is short, but provides a nice off-road feel to the model.
Moving to the remote-controlled Power Functions, they are driven by a single motor, which distributes power to three gearboxes associated with different functions. The motor can drive the manipulator crane, outriggers, and tipper depending on the gear selection by linear actuators. The first group is located at the right and operates the manipulator crane with two linear actuators and a turntable. The second group of gearbox is located on the left and operates the outriggers and the tipper, both with mini linear actuator. The manipulator crane is an inspired and modified smaller version of the 8258 set, with manual extendable boom with fixed hook.
The tipper is an interesting feature, and was the first time I designed a double-sided tipper with an articulated dropside. For tipping, a center actuator raises the tipper with rollers, and movable locks set the pivot points of the tipper. These locks allow the tipper to tip to the side or to the back. Therefore, either the tipper is dumped at the rear by unlock the side lock and lock the rear one, and dump at the side by locking the side lock and unclock the rear one.
Two pads for outriggers are stored on the right side of the truck in a lockable box, and a compartment on the left opens to reveal two toolboxes. Here is the mechanism:
I’m very happy with the resulting design. I think that the vehicle’s aesthetics are as important as its included functions, and with this project I tried to make the truck look as close to the Gaz Sadko as possible, which I think is a very powerful look. As the inventory of red parts from this set was limited, I designed the crane and cabin to validate the possibilities of the design. Once I was satisfied with the overall shape of the body, I designed the chassis of the truck and its integrated functions. I would have liked to include a powered front or boom winch, but ran out of space. To match the Sadko look, I used curved panels on the cabin and nose, and a Bionicle tooth to round the hood and mudguard. Details like the front grill, bumper, mudguard, ladder, light, beacon, and interior contribute to the richness and authenticity of this model.
Pictures and Video
This E-model uses 2,697 of the set’s 4,057 parts (65%), and the instructions are 687 pages long, making this the longest instruction set I’ve ever published. As usual, the instruction manualis a step-by-step, high resolution PDF with a parts list included, similar to official Lego set instructions.
If you own the #42082 Lego set, you have all the needed parts already! The exact parts list is available on Rebrickable:
42082 Model E – Offroad Truck
42082 Model C – Wheel Loader
42082 Model D – Forklift Truck
Price list for example :
- Model C + Model D or Model C + Model E = 21.25€ instead of
- Model D + Model E = 25.5€ instead of
- Model C + Model D + Model E : 32€ instead of
After your payment, you will be redirected to a page for downloading your instructions, and will receive also the link to download by email. Please check the spam box and be patient to receive it. If you have trouble to download your copy of the PDF after payment or open the document, do not make a paypal dispute, please contact me using the contact form. The link to download the instructions expires within 24h. Contact me if you have lost your instructions. Note that you can print it, but not copy or distribute. Thank you for supporting my work 🙂
- 25/04/20 : Correction on the left leaf spring suspension page 65
- 30/04/20 : Correction on the hole used for fixed the linear actuator on the tipper lever, page 302.