eric trax

[MOC] Krampe Big Body 550 - tractor trailer

Recommended Posts

Only one model today :D

For a long time I wanted to build a classic agricultural trailer. It was supposed to be a standard double axle version. However, when I built the New Holland and Fendt tractors, I changed my mind and decided to build a tandem trailer.


I made such a decision for a simple reason. The only output that can be controlled in tractors is the PTO shaft. This version of the trailer does not have to have a pneumatic system or engine to raise the kiper. In addition, the model had to be in a popular color because I wanted to create an instruction for it. The choice fell on Krampe Big Body 550.


Trailer frame

The frame is a fairly simple liftarm structure. The first version had a pendular suspension, but I had to remove it because the loaded trailer was unstable. Thanks to this, I could additionally strengthen the frame and move the cylinder towards the hitch in order to increase the load capacity. At the moment, it is about 1 kilogram

I wanted to build a realistic model. Because of that I had to give up technic panels. If I used them, the tipper would weigh 1/3 of its current weight. Bricks are heavy, so the payload has dropped. The model looks very good like model–team one. I am glad that I managed to reproduce the curvature of the sides.

The tailgate lifts automatically when the tipper is lifting. The trailer has a system of pull rods that lift it up. If the tractor has a pneumatic system, it can be replace by lego pnaumatic cylinders as a separate function

Thanks for reading!

Build instructions can be found here:


 1.jpg_thumb.jpg 10.jpg_thumb.jpg 2.jpg_thumb.jpg 3.jpg_thumb.jpg 4.jpg_thumb.jpg 5.jpg_thumb.jpg 6.jpg_thumb.jpg 7.jpg_thumb.jpg 8.jpg_thumb.jpg 9.jpg_thumb.jpg  




Edited by eric trax

Share this post

Link to post
Share on other sites

Wow, that looks great!  Excellent reproduction of the original, and properly functional, too.  I'm a little surprised you didn't use 1x1 bricks for the bumper/crash bar to capture the shape given how perfect the rest of it is, but opting for more stability with the Technic parts makes sense.  :wink:

Share this post

Link to post
Share on other sites

Good enough. 

Just kidding, it is absolutely stunning, great extension to Your farming theme! :thumbup::drool:

Share this post

Link to post
Share on other sites

A very nice clean looking trailer.  It certainly complements your range of tractors.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.