RACE2 – Super fast LEGO RC off road car

Posted by on May 3, 2013 in Design, LEGO | 25 comments

RACE2 is the fastest LEGO off road car. The 4WD RC car can get over rocks and obstacles fast. It is an improved version of my original RACE car. The building instructions are available as well as the LEGO Digital Designer file (LXF). It is a simplified and more robust version of the original RACE car.


  1. This is a very “elegant”, simple design! This is what many Lego Technic fans want — an inexpensive, FUN Power Functions vehicle that can take some abuse!

  2. Does the vehicle perform so well all the time, or did you censor out parts where you needed human hand intervention?

  3. My steering is not always perfect, so these are the examples when I performed well.

  4. hi, i followed your instruction & photos to my best knowledge to build the Race2. However i get very weird RPM drop problem on the L motors. i tried rechargeable batteries as well as Duracells. Tried just 2 wheels but similar problem. please see the youtube clip http://youtu.be/26cZV-wIjIk

    any good tips?

  5. The only thing i can think of the IR receiver. there are two versions. I used version two. It is printed on the receiver “v2”. have a look at: http://www.philohome.com/pfrec/pfrec.htm

  6. this video shows the same behavior. pretty sure it is the ir receiver. http://www.youtube.com/watch?v=KCM4Ug1bPrM

  7. i thought it might be the IR receiver and tried a couple but same behaviour. will try a couple more. btw, they are all V2

  8. I have just ordered all the parts and am really excited to build the Race2. Just wondering why you chose IR over radio for control? Is there any way the Race2 could be adapted to be Radio controlled?


  9. LEGO had some RC cars in their program some years ago. You can still order the parts on BL, but then it would be a very different model. But the design principle could certainly be applied to the LEGO RC car parts.

  10. This Lego car is a beast! Thanks for sharing the links to the instruction. The videos are also very helpful. You can find me at

  11. Hi,
    Your LEGO RC off road car is very nice. Do you have a link that show how to build it and what need to buy?

    Have a nice day.

  12. The instructions for the earlier version of RACE are here: http://rebrickable.com/mocs/ChristophBartneck/race. The web page will list all the required pieces.

  13. Thanks very much for the instructions, however, its seems does not include the motors, or am I looking at the wrong instructions?

  14. LDD did not have the large motors in its library at that time. Hence their absence. I tried to add “fake” motors to it that indicate their position. Look at the photographs, it is reasonable easy to make out their location and orientation.

  15. where to get parts for race 2

  16. Mainly Bricklink

  17. hi,what parts do i need to build this

  18. What is the model of the motor ? L or M ?

  19. It is using L motors.

  20. Please could you give me a parts list?

  21. Have a look at the building instructions.

  22. have you tried using a s brick to control the race 2 yet?

  23. I want to build the car but i dont have all the pisces to build it where can i by the pisces.

  24. Have had the same problem as biggles, have now tied two receivers v1 and v2 and the recently introduced sbrick which is bluetooth receiver controlled from apps installed on phones etc. and all have a similar problem, now beginning to think that it is the motors, any advice ?

  25. Have you tried using a m Motor?


  1. Building an off road car with LEGO Technic | Christoph Bartneck, Ph.D. - [...] I build a more robust and simpler version called RACE2 (how surprising). I added a roll over cage, bumpers…

Leave a Reply

Your email address will not be published. Required fields are marked *