Generic farming tractor Deere inspired - global presentation

[steph77]

Comming soon!

So....Fendt or Deere. According to you? Witch will be best?

Still work to do on the attachements and tool...

S.

Edited September 11 by steph77
Computer bug while posting...

[Bartybum]

Fendt !! Green + red = 

Very pretty model by the way

Edited August 4 by Bartybum

[Jundis]

Definitely Fendt!

The 3-point hitch is masterful! I didn't catch that there is the new 1x8 link available with open ball sockets, perfect usage!

Can you show a pic of the front axle? I'm tinkering for a long time on a suitable one for my tractor, which will likely be a Deere, but now maybe will be a Fendt as well :D 

[steph77]

49 minutes ago, Jundis said:

 

Can you show a pic of the front axle? I'm tinkering for a long time on a suitable one for my tractor, which will likely be a Deere, but now maybe will be a Fendt as well :D 

I'll do that this evening as I am at work now but I can let you a Teese. As @Attikasaid recently...let's make Ackerman great again!

[1gor]

Fendt is easier to make - more dark bluish gray parts ghan green...scale?

It looks nice so far. I envy you, I xan not find time to finish my Fastrac 8330...

I wonder how you will make ackerman steering; I'm braibstorming about it for my JCB...

[steph77]

2 hours ago, 1gor said:

Fendt is easier to make - more dark bluish gray parts ghan green...scale?

It looks nice so far. I envy you, I xan not find time to finish my Fastrac 8330...

I wonder how you will make ackerman steering; I'm braibstorming about it for my JCB...

For the scale I do not know. It is exactly what picture show so I guess 1/18 or so

For the front axle. It is already build an integrate the Ackerman steering already. 

[1gor]

31 minutes ago, steph77 said:

For the scale I do not know. It is exactly what picture show so I guess 1/18 or so

For the front axle. It is already build an integrate the Ackerman steering already. 

If it is 1:18 then it is perfect for 7 series 724 model. Looking forward to see how it turns out...

I would like to see more of front axle

[steph77]

5 hours ago, 1gor said:

...

I would like to see more of front axle

Here it is.

Strong Ackerman effect on the very end of the rack movement. This thing turn literally on place. 

[1gor]

It is nice project, but mine has all wheel drive...perhaps I'll work on my trac tomorrow...now I have to think about another trac for front loader; first idea was MBTrac (Moba Isenheim user beat me),  then Deere (but need lots of green parts...), then Fendt (but with all wheel drive is to wide for my scale - it should be 2550/18 studs wide -> max. width ~~ 18 studs)... 

Thanks for sharing Steph 

[steph77]

14 minutes ago, 1gor said:

It is nice project, but mine has all wheel drive...perhaps I'll work on my trac tomorrow...now I have to think about another trac for front loader; first idea was MBTrac (Moba Isenheim user beat me),  then Deere (but need lots of green parts...), then Fendt (but with all wheel drive is to wide for my scale - it should be 2550/18 studs wide -> max. width ~~ 18 studs)... 

Thanks for sharing Steph 

I understand now why all people want to see the front axle... I designed one wich was steered and driven but I had to make a choice at one moment. Or I kept a buwizz2 and only 4 motors. This way it was possible to locate a central diff. Or take my buwizz3 and push 6 motors in the chassis. This is what I've done so far. The 6 motors are for drive and steer. 2 are for the two functions of the loader. And the 2 last are for the rear PTO and the 3 points hitch...

The major other consequence of this choice is that I get an excellent turning radius...

s.

[1gor]

My future plan is ti use 4 motors; two for front loader and two for drive / sterring function. I have only one BuWizz and this one is hidden in left side of Fastrac. When I finish it, I'll post it with few development pictures in my tread... Since I always wanted to use buggy motor, I use it in Fastrac (with big big reduction), so I have only this model that is not 100% percent Lego in plan (BuWizz and front 94.3 Cada tractor tires...). Problem is that after I finish it, I woukd nedd to fix other PF servo motors for next projects...

[steph77]

 

 

I searched a bit and found back the steered and driven axle that was still built ;)

 

 

Edited August 4 by steph77

[1gor]

I use hub reduction on same width and therefore I have to raise shocks not to colide with hub... perhaps simplest solution is the best one...

[steph77]

Actual progress,

I now have to work on some points in particular.

First I Need to find some more range to the bucket's tilting mechanism. This will be done at the prize of a slightly heavier design around the main arm kneel . However I need a really realistic movement.

Then I will begin the chase of the blue pins . At least on the more visible area as my stock of 3l black pins is limited

And finally I'll need to build a  proper attachment for it. I thought finally at a simple tilting trailer as it seems to me it should be the best combo with the tractor.

Opinion on this? color (need your help to find the best color combo as i' am daltonian guy) ? 

s.

Edited August 8 by steph77

[1gor]

@steph77 today Fendt uses mostly bright green with dark bluish gray (I drive every workday just near AGCO distributer), but there are also other colorizations like green with datk bluish gray or black or entire black / with some silver and red wheels. Your interpretation in my eges looks very nice like it is. You can not expect green parts for everything...perhaps front bonnet is not curved enough (but I still don't know what model you try to build as Lego version)... I know what mean by replacing visible blue pins with black; I spent few weeks on that with my Fasfrac...

 

[Paul B Technic]

This is very cool.

[steph77]

Hi folks. 

Some news. At first I am sorry for the bad quality of the pictures. Low light ...I will fix this later in the final presentation.

So. It seems it finally turned to deere tractor. As you may know I am a daltonien guy and I must say that despite your opinion, wife and children opinion, this deere colors heme suit better to my eyes. The other point was that the cab design doesn't match fendt at all.

I worked on several things these days. The main mods comes to the front end and on the main wheel base. It has been lengthen by one stud.

I also worked on two attachments. A simple dump trailer and a hay tender.

This was thought  to fully exploit the potential of motorized functions.

The hay tender has two separate motorized functions based on an unique pto shaft. Who will guess how it work?. 

Awaiting best picture here is a second one of the front end:

 

hope you'll like it despite picture quality.

s.

Edited September 2 by steph77

[1gor]

Nice that you continued this project, my is on standstill because I just figured out that Lego buggy motor is slight over 3 studs thick ... do only possibility is now BuWizz motor...

[Jundis]

Nice tractor!

Really like the front loader, such a sleek design plus all electric! :D

Can you make a pic of the underside? Always curious about the drivetrain if visible ;-)

[Paul B Technic]

That is coming along really well.

[steph77]

On 9/2/2025 at 9:52 PM, Jundis said:

Nice tractor!

Really like the front loader, such a sleek design plus all electric! :D

Can you make a pic of the underside? Always curious about the drivetrain if visible ;-)

Here you go:

Nothing special here.8t/8t/24t connected to the differential (classic one).

BTW. I  am working on a special attachment that will need a third function on the front loader. At this stage I equipped the tractor with two lines of pneumatic hose and the idea is to hide an autovalve in some counterweight at the back. It will be run by the pto and actionate the claw

S.

ps anyone has an idea on how should work the hay tender?

[1gor]

If you have rear PTO, I think it is no problem...it works like this

I hope that one day people will not be so selfish and put own face in focus instead of main topic presented in their videos...

 

For third function on front loader you will need extra axle or pneumatic hose...

Edited September 4 by 1gor

[steph77]

Presentation of My Tractor Model

 

Here we are at last. It’s been a few weeks since the model was completed, and I’ve been tweaking small details here and there without adding any major new developments.
So, it’s finally time to give it a full presentation, along with some nice photographs.

It all started with the purchase of BUWIZZ bricks. Initially, these were meant for building a remote-controlled excavator, which I did—but quickly moved on. The main advantage of the BUWIZZ is its very compact size and the proportional control of each function.

In my building history, the model that caused me the most constraints from this perspective was a remote-controlled tractor whose design was significantly—and somewhat negatively—impacted. So I decided to go back to the drawing board and create a new tractor. In terms of functionality, I had the choice between four or six motorized functions, depending on whether I used a Buwizz 2 or a Buwizz 3. I chose the latter.

 

Then came the definition of the specifications, mainly concerning the two additional functions on top of the four standard ones: propulsion, steering, three-point rear lift, and power take-off (PTO).

As I often do, I put myself in the shoes of a designer and asked: how do I create the best playset? The options I considered were:

• A front PTO and a complementary front lift
• A second rear PTO and model lighting
• Dual independent lighting
• A loader with lifting and tilting bucket

A tractor is essentially a tool carrier—it doesn’t really exist by itself. It’s the tools that give the model its full dimension.

In terms of tools, my thinking revolved around what the tractor itself made possible. To make the most of it, I opted for two distinct implements: a simple tilting trailer, and a hay tedder. The trailer allows for fun maneuvers and makes use of the PTO, while the tedder takes advantage of both the lift and the PTO.

With this setup, it felt natural to include a front loader with bucket. This way, you can run a complete cycle: load with the bucket, dump into the trailer, and then empty it.

As for the tractor itself, I didn’t aim to reproduce any specific existing model. That’s a tricky exercise, and not my strong suit. I prefer to let the mechanics guide the design choices, which results in a more generic look but fully meets my mechanical goals.

That’s how the model was born. I began by defining the overall placement of the main electrical components: batteries and motors. In a tractor, once you set aside space for the wheels—especially the steering ones—you quickly realize the remaining space is very limited. LEGO’s way of solving this (making bigger and bigger models) wasn’t an option for me, since the wheel size dictates the model’s scale.

After about fifteen prototypes—testing 4x4 transmissions, lockable differentials, etc.—I settled on a simple rear-wheel drive. The main tractor motors (for the standard functions) were aligned low and in series, while the loader motors were placed laterally, as close as possible to the functions they control.

 

The battery sits under the hood, which eliminates the presence of a fake engine. This is a weakness of the model, but it allows very easy access to the battery for recharging (USB-C).

Once I finalized the design of the rear lift, the rest of the build followed naturally.

For the color scheme, without repeating what I wrote elsewhere, I went for a John Deere look. Since I already had the forwarder and enough green parts, I chose that combo.

The tractor has a medium-long wheelbase, suitable for motor placement. The different wheel diameters required an offset of one and a half studs for a perfectly level chassis. After testing a one-stud rise and a one-stud drop, I chose the latter.

The cab is simple, angular, and embedded in the tractor’s body for a compact, robust look. The fenders follow the same angular style for overall consistency. I did try rounded designs using flex axles with 3L beams inserted, but although nice, they didn’t fit the model’s overall look.

For the hood, I aimed for the cleanest build possible. It’s equipped with headlights, flares out slightly toward the front, and rounds off smoothly into the grille. It gives full access to the Buwizz, which can be removed and used in another model. Considering the cost of the battery, it’s worth reusing it! The hood also features a pre-tensioned mechanism that holds it open at any angle. This required quite a bit of experimenting due to the tight space in the hinge area. I tested several springs—new, used, harder ones, etc.—and the winning combination was an old soft shock absorber spring.

Now for the functions.
The Buwizz 3 has six ports:

• 4 connected to LEGO Powered Up Large motors
• 2 connected to LEGO Power Functions Medium motors

Function allocation:

• Large motor #1: propulsion
• Large motor #2: steering servo
• Large motor #3: loader lift
• Large motor #4: bucket tilt
• Medium motor #1: PTO
• Medium motor #2: rear lift

 

Propulsion
The PUP motor drives a 8T/24T gear into the differential, which then sends torque to the wheels via portal axles with 12T/20T gears. This setup, combined with Buwizz control, allows precise low-speed control and a good top speed for playability. Torque is preserved, but the model should preferably stay on flat surfaces—no off-roading, especially since no clutch gears are in the drivetrain.

 

Steering
Initially designed with Ackermann geometry, the final version uses a simple parallel linkage. The reason is that the Ackermann setup limited the motor’s rotation to ~160° instead of 180°. Also, oddly enough, the drive motor seemed to strain less in reverse than forward—this disappeared when I changed the steering. The system is straightforward: the motor drives a 12T gear directly on a rack. A mechanical stop ensures proper motor calibration in the Buwizz app. The steering angle is excellent, and the wasp-waist front design allows full wheel movement. The front axle also pivots, serving as suspension.

 

Overall structure
The model actually uses relatively few parts. I didn’t count, but it’s fairly restrained. That’s partly because the motors themselves serve as structural elements, resulting in a rock-solid and very stable build.

Rear lift
Driven by a PF medium motor connected directly to a small linear actuator, linked via 3L beams and ball joints. Smooth, well-calibrated, with generous travel. The arms nearly touch the ground and lift quite high. Power is limited by the actuator’s clutch, but this never caused problems during many hours of testing.

PTO
Driven directly by the second PF medium motor, mounted at the rear hitch. Direct connection means no friction losses, but the motor size limits torque. Compactness made it the best choice.

Loader and bucket

The last two large motors power the loader arm and bucket tilt. These functions involve more friction, so I used the stronger motors. Directly mounting the actuators on the motor shafts created friction from the loader’s weight, but after many iterations of geometry and angles, I achieved satisfying results. It relies on motor strength rather than zero-friction design—a deliberate trade-off for space and design constraints.

 

 

The arm’s range is excellent, with the actuator disengaging exactly when the bucket touches the ground—no stress on the mechanics. The bucket’s geometry amplifies tilt range, dumping much more effectively than many LEGO models I’ve seen.

Implements
I’ve built two so far, with potential for more later.

• Trailer: A simple single-axle tipper. Not too big, for coherence and display practicality. The PTO drives a standard linear actuator for tipping. It has two opening side panels with locking, plus a manual stand.

• Hay tedder: Inspired by a mechanism I discovered in set 8094 as a child, where a motor powered two different functions depending on rotation direction via friction. I recreated this principle: in one direction, a 12T gear with a friction clutch engages a worm gear driving linkages to raise/lower the tines.  In the other direction, it drives the rotary rakes. The tedder has four support legs for easy attachment, plus details like lights, indicators, and a width bar.

 

 

 

 

I hope you’ll enjoy this model as much as I enjoyed creating it. Feel free to share your comments!

 

Edited September 11 by steph77

[Jundis]

What a brilliant model of a tractor. This actually is maybe my favorite in terms of whole package with looks, functions and style.

I'm in awe 

Only tini tiny small thing: Does the yellow connectors on the rake mechanism hold up? :-P

[1gor]

Nice to see your trac @steph77...just trying to figure out which Deere model inspired you, but I could not... IMHO it woyld be better to use powerfunctions, so you can shrink wheelbase for 2 studs (you can always connect extra motors via IR receiver on BuWizz 2.0)

kind regards buddy