A compact tracked loader featured powered tread, raised and tilted bucket with dual pivot boom in very small volume. With building instructions.
How to build ?
You only need the parts and the instructions. You can purchase the PDF instructions on this shop which contains the partlist at the end, and you can check on Rebrickable or in the instructions preview below.
Compact Tracked Loader
If you do not have the parts, you can purchase the complete kit from retailers :
- Using Genuine LEGO Parts : This model is available at Buildamoc, in a complete package including LEGO Genuine Parts and PDF instructions.
- Using non-Genuine LEGO Parts : This model is available on LesDiy Store in a complete package, including parts (alternative bricks from China) and PDF Instructions.
Review
After making my last creation (Leaning Tricycle) using Buwizz, I wanted to re-test sbrick, as it never worked for me and my google phone since I have. And I was surprised that the dev team have made a update and it finally works on my asus phone ! So I would like to make a little creation to test it.
The idea was at first to build a small 4 motors creations to be controlled by the buwizz. But I do not want to make an other crawler or wheeled loader, so I add the challenge to make the smallest crawler loader I can.
The tracked loaded is build using only M motor for the small size. 2 Of them are located in the chassis underneath the cabin and drive each track with 12/20t and 8/24 gearing ensuring a good speed with accurate control. Note on this picture that I have placed the battery box upside down in order to fit the wire.
The lifting of the boom is powered by a M-motor placed behind the drivetrain. It operates two linear actuators. Note that the model of inspiration was the John Deere 323 who has a interesting boom mechanism, composed of 2 links which differs from the classic Bobcat mechanism wich long rod. This mechanism enables here to have better travel for the bucket but also a better force repartition. In deed the load tends to pull the connecting rod in steel instead of the actuators. Here is in lego enables to have compact solutions and high travel.
The tilting of the bucket is at least powered by a M-Motor which drives a small linear actuator on the righ side. Then a system of lever and connecting rod ensuring the tilting of the bucket. At the begining I use worm screw and 8t gearing for tilting the bucket which was a more compact solution but was too fast and not accurate. Therefore this solution is a bit less compact but still have a better accuracy of position which is better for playbility.
To conclude, this moc is very compact and playable, with 4 functions in it, this is one of the smallest tracked loader in lego. I use lipo battery with sbrick, but this is also compatible with classic IR receiver (need 2 and there is enough room in the cab) or the buwizz instead of sbrick plus lego battery box. This model is not equipped with light but you can easily add it.
How to build ?
You only need the parts and the instructions. You can purchase the PDF instructions on this shop which contains the partlist at the end, and you can check on Rebrickable or in the instructions preview below.
Compact Tracked Loader
If you do not have the parts, you can purchase the complete kit from retailers :
- Using Genuine LEGO Parts : This model is available at Buildamoc, in a complete package including LEGO Genuine Parts and PDF instructions.
- Using non-Genuine LEGO Parts : This model is available on LesDiy Store in a complete package, including parts (alternative bricks from China) and PDF Instructions.
Important note : the wires are not represented in this instruction. You can help you by watching the free photo sequence but the main point is to connect the motor on the receiver and put the rest of wire in the cab, nothing more complex.
Free Photo Sequence
Here is the photo sequence of dismanlting. You can download the Zip file here : lego-instructions-crawler-loader.pdf (13mo)
(3) Comments
Great creation Nico71! It’s a nice compact simple RC vehicle with interchangeable features like Buwizz and Sbrick.
This is the same size so yes I guess (‘I do not have one for testing).
Hi Nico! Very good creation. Can I use the 8881 Lego Technic battery box and not the lipo battery?
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