The new OpenRC Tractor is finally here!!

It's been almost two years since I started working on this new MK3 TEA20 project.

Now, after hundreds of hours of design, test, print, redesign… it’s finally here and all the hard work has paid off! I think it turned out great and I’m very excited to see if you like it!

It has been completely designed from scratch and has many improvements over previous versions:

Dual motors
Much more detail and realism
Much easier electronics management
No differential (forget grinding problems)
Ackerman style steering
Standard servo
3 part wheels (beadlock style), so tires can be printed in any filament, flexible or not.

My plan is to continue working on this project. I think it has endless possibilities. Sometimes, it’s difficult to find free time for this, but even if sometimes slows down, the OpenRC Tractor never stops!

I have several tools and addons for my tractors and will update materials and upload them to printables progressively, stay tunned!

Instructions

Check these resources to help you with your tractor build and don’t forget to click “like” and share makes of your tractor.

List of materials and printed parts (BOM spreadsheet)
- 3rd party hardware kit here.
Assembly video
Electronics connections
Video in action

Considerations

Some parts have a “sacrificial layer”. It was made this way to avoid using supports. You’ll just have to remove them manually before assembling. I use the tool from the BOM spreadsheet.
All parts should be correctly oriented to print the way they are (let me know if they’re not).
Total printing time is around 70 hours but of course that depends on the printer/settings you use.
Recommended printing settings can be found in BOM spreadsheet
I used a piece of TPU to mimic motor pipes

Changes

16-12-2022: Added part 9tight for tight fit (perfect with my prusa)

07-06-2023: Added connection instructions picture

29-05-2024: Added a loose 38 part with more room for the servo arm.

06-02-2025: Added part 28 v2 (28-OpenRC Tractor- rear center arm support V2_x2) with improved geometry for rear arm attachments.

Special thanks to my friend Nicolas for all the support and help!

If you like my tractor, please click "like", and post a make. This will help me to win some prusameters to keep printing!

You can also support my work with a coffee or a tip!

Thank you!!!

OpenRC Tractor MK3 TEA20

by makitprojects · original on Printables ↗

Hobby & Makers / RC & Robotics

♥ 866⬇ 4.5k🖨 38 prints

License: Creative Commons — Attribution — Noncommercial — Share Alike ↗rcopenrctractorfergusontea20

Print profiles

4-2b-OpenRC Tractor- steering arm_bridge_left.stl
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Prints on: A1 mini 0.4PLA
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7-OpenRC Tractor- steering arm support_x2.stl
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3SS-OpenRC Tractor- steering servo holder.stl
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23-OpenRC Tractor-toolbox cover.stl
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16-OpenRC Tractor- rear axle adapter_x2.stl
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13-OpenRC Tractor- front tyre_x2.stl
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11-OpenRC Tractor- motor support_x2.stl
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1-OpenRC Tractor- front chassis.stl
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47-OpenRC Tractor-seat support.stl
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2b-OpenRC Tractor- front dumper block.stl
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15a-OpenRC Tractor- front rim in_x2.stl
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4b-OpenRC Tractor- steering arm_bridge_left.stl
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51-OpenRC Tractor-filter left.stl
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8SSa-OpenRC Tractor-steering servo circle arm.stl
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28-OpenRC Tractor- rear center arm support_x2.stl
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18c1-OpenRC Tractor- rear rim cover star_x2.stl
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4-2a-OpenRC Tractor- steering arm_bridge_right.stl
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52a-OpenRC Tractor-pedal left.stl
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18c2-OpenRC Tractor- rear rim cover round_x2.stl
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57-OpenRC Tractor-crank clamp.stl
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8MS-OpenRC Tractor-steering servo arm.stl
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33-OpenRC Tractor-hitch 2019 edition (optional).stl
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5b-OpenRC Tractor- front axle left.stl
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55-OpenRC Tractor- rear axle adapter NOT RC_x2.stl
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43-OpenRC Tractor-steering wheel.stl
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22b-OpenRC Tractor- steering arm left.stl
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9-OpenRC Tractor- rear axle_x2.stl
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18a-OpenRC Tractor- rear rim inside_x2.stl
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31-OpenRC Tractor- fender_x2.stl
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26-OpenRC Tractor- rear.stl
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38-OpenRC Tractor-rear servo arm_x2.stl
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50-OpenRC Tractor-filter right.stl
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4a-OpenRC Tractor- steering arm_bridge_right.stl
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29-OpenRC Tractor- rear servo cover.stl
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10-OpenRC Tractor- rear bearing cover_x2.stl
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5a-OpenRC Tractor- front axle right.stl
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15b-OpenRC Tractor- front rim out_x2.stl
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27-OpenRC Tractor- rear chassis.stl
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40b-OpenRC Tractor-rear arm screw optionB_x2.stl
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58-OpenRC Tractor-crank.stl
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2a-OpenRC Tractor- front dumper block.stl
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45-OpenRC Tractor-front grill.stl
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3MS-OpenRC Tractor- steering servo holder.stl
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46-OpenRC Tractor-seat.stl
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41-OpenRC Tractor-hood.stl
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18b-OpenRC Tractor- rear rim outside_x2.stl
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40c-OpenRC Tractor-rear arm optionC_x2.stl
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25-OpenRC Tractor-toolbox.stl
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32-OpenRC Tractor- fender support_x4.stl
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34-OpenRC Tractor- rear center arm spring support.stl
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53-OpenRC Tractor-NOT RC servo steering support.stl
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Prints on: A1 mini 0.4PLA
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22a-OpenRC Tractor- steering arm right.stl
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12-OpenRC Tractor-hitch hook.stl
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6-OpenRC Tractor- front bridge.stl
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39c-OpenRC Tractor-rear arm main optionC_x2.stl
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44-OpenRC Tractor-rear hitch.stl
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49-OpenRC Tractor-exhaust.stl
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14-OpenRC Tractor- front axle bearing casing_x2.stl
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20-OpenRC Tractor- wheel nut_x4.stl
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17-OpenRC Tractor-hitch plate.stl
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30-OpenRC Tractor- front floor.stl
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56-OpenRC Tractor- false servo NOT RC_x2.stl
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24a-OpenRC Tractor- motor right.stl
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42-OpenRC Tractor-console.stl
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48-OpenRC Tractor-exhaust support.stl
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54-OpenRC Tractor- rear axle NOT RC_x2.stl
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35MS-OpenRC Tractor-steering servo cover spacer_x2.stl
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36MS-OpenRC Tractor-steering servo cover.stl
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Prints on: A1 mini 0.4PLA
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40a-OpenRC Tractor-rear arm glue optionA_x4.stl
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8SSb-OpenRC Tractor-steering servo metal arm.stl
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24b-OpenRC Tractor- motor left.stl
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21-OpenRC Tractor-gas lever.stl
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39ab-OpenRC Tractor-rear arm main optionAB_x2.stl
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Prints on: A1 mini 0.4PLA
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52b-OpenRC Tractor-pedal right.stl
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37-OpenRC Tractor-hitch plate 2019 edition (optional).stl
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19-OpenRC Tractor- rear tyre_x2.stl
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Prints on: A1 mini 0.4PLA
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18c2-OpenRC Tractor- rear rim cover round_x2_V2fixed.stl
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Prints on: A1 mini 0.4PLA
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9tight-OpenRC Tractor- rear axle_x2.stlDEFAULT
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38-OpenRC Tractor-rear servo arm_LOOSE_x2.stl
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28-OpenRC Tractor- rear center arm support V2_x2.stl
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Prints on: A1 mini 0.4PLA
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