Motorized Horse Race Game - Free 3D Print Model

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Coffey Manufactury

Toys & Games>Other Toys & Games

IP Report

GIF

Print Profile(2)

All

A1 mini

P1P

P1S

H2D

P2S

X1E

H2D Pro

X1 Carbon

H2C

H2S

X2D

A2L

0.2mm layer, 2 walls, 10% infill - A1 Mini Compatible

Designer

13.9 h

9 plates

4.7(7)

Alternative for Oval Gear

Designer

1.1 h

1 plate

Open in Bambu Studio

Boost

538

1058

375

Released

Bill of Materials

Maker's Supply Kits and Parts

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TT Motor DC5V 59RPM CCW Single Axis(1PCS) - LA001

Stainless Steel Balls

Bambu Filaments

Select all

Copper Brown Metallic (13800) / Filament with spool / 1 kg

PLA Metal

PLA Basic

PLA Basic

Description

⚠ ATTENTION: You must have a Commercial License to sell prints of this model. ⚠

Commercial Licenses are available on Patreon

https://patreon.com/titanmechatronics

Place your bets on your favorite horse in this mechanical horse racing game! Powered by a single TT Motor, this machine will simulate a live horse race as soon as you power it on! I found it has a steampunk aesthetic while designing it, so I decided to lean into that.

This design was inspired by the 1920's tabletop game by Gee Wiz, particularly around the marble and shaft concept.

The gear setup uses oval gears which alternate the ratio to be fast, then slow. Combining the alternating speed with the large to small ratio causes a cycling effect where each lane will get fast and slow rotations. Relative to when you start and stop the motor, you effectively create a pseudo-random speed each time the paddle hits the ball. In addition, the time it takes for the ball to roll back to the paddle will increase the randomness.

This model required a single TT motor and 5x 8mm balls. The TT motor installation is completely tool-less and allows easy reuse of the motor for other projects.

This design mostly uses 3D printed parts which snap-fit together and have no supports, as such, tolerances are tight. Printing this will require a well tuned printer and a clean build plate. Please refer to the assembly guide for help first!

Boost Me (for free)

If you like this model, please consider giving it a boost! There were many prototypes to get this to its current state.

Update to elliptical gears 3/8/2026:

-Added print profile for alternative gear set to the elliptical ones

-Assembly should remain the same, only that the new rounded gears (shown in beige below) are used in place of the elliptical ones

Update to two rail/track parts 4/27/2025:

-Added notch on rails to stop horses at start of track for easier reset
-Revised the rail profile to print cleaner overhangs
-Revised the seam to be at an angle to decrease the probability of the ball getting stuck

note: assembly is still the same

Disclaimer: this design has moving and fast spinning parts, please use caution when handling it. Although there is very little force behind the motor, injury is still possible. I am not responsible for misuse and injury when using this design/model.

Feel free to reach out with modeling questions! I'm always happy to discus all things CAD!

For questions related to licensing, please feel free to reach out on here, Patreon, or Instagram.

Be sure to check out my other models!

https://makerworld.com/en/@Coffey_Factory/upload

Documentation (1)

Assembly Guide (1)

Guide.pdf

Comment & Rating (55)

@user_831278053

I'm having trouble with the gear set. After assembling everything, the gears won't rotate because they're jamming. I'm not sure if I assembled the gears incorrectly, but I followed the PDF file you attached.

The designer has replied

@Coffey_Factory

Thanks for your feedback! The elliptical gears can be tricky because I didn’t make them perfectly symmetrical (should have done that originally), but I’m going to upload an alternative gear set that should be easier to work with. Sorry about that, I should have it up as a secondary print profile soon!

@Coffey_Factory

I have added an alternative gear set print profile, it has round gears that can be used in place of the elliptical ones. It should mesh more reliably. Hope this helps!

@user_831278053

Replying to @Coffey_Factory :

Thank you very much. I was about to print it out to test it.

@Gauto

Boosted

Works very well The ball sometimes gets stuck at the junction of the two track pieces, but I think I know what to do about that so it's not a problem I added a pause around the 15th layer to change filament and give the track a "grassy field" look I'm quite happy with this choice Anyway, thanks for feeding my game addiction :)

The designer has replied

Show original

@Coffey_Factory

Thank you, I appreciate it! Hope you enjoy!!

@ricklin

Boosted

Are there any tips for installing this part It didn't fit in at all

The designer has replied

Show original

@Coffey_Factory

Thanks for your support! That part should print-in-place. When you open the 3mf file, it should be aligned to print pre-assembled. Hope this helps!

@ricklin

Boosted

I dont understand I didnt change anything its impossible to put it in

@ricklin

Boosted

where i did wrong?

@hungsolo

Print Profile

0.2mm layer, 2 walls, 10% infill - A1 Mini Compatible

was fun to print and put together. for me, the o long gears are too finicky to align just right and frequently bind up

The profile uploader has replied

@Coffey_Factory

Thanks for the review! They can be hard to line up right, but there should be a position that they mesh well. It could take a couple tries to get it right

@hungsolo

Replying to @Coffey_Factory :

will try some more and I crease rating if I get it right. fun project though, thanks

(Edited)

@user_2506252645

Do you have a simulation file of the entire model? I need it, and I will reward you.

The designer has replied

@Coffey_Factory

A simulation file? Could you specify what you mean?

@user_2185013791

Replying to @Coffey_Factory :

Simulation files for SolidWorks or Inventor software are assembly files that combine the entire model

Show original

@Coffey_Factory

Replying to @user_2185013791 :

Oh like an assembly. Yes I have the files. What do you intend to do with them?

@PinkSquirrel

Super cool. 😎 I have a few questions: could the horses automatically shoot back when they reach the goal? How heavy can the horses be? I would like to replace them with penguins

The designer has replied

Show original

@Coffey_Factory

Thank you! At the moment, the horses need to be pushed back manually. I’m not sure how heavy the horses can be, but they are relatively light

@PinkSquirrel

Replying to @Coffey_Factory :

Danke.

@lancil9

Awesome project! Is it possible to replace the motor with a hand wheel

The designer has replied

Show original

@Coffey_Factory

Thanks! Yeah it’s definitely possible, would require some creative engineering! Maybe someday I’ll look into it!

@3dmastery

Boosted

Awesome idea! Reminds me of Sigma Derby. Love it!!!

The designer has replied

@Coffey_Factory

Thank you! I appreciate it!

@The3DPrintGirl

would the middle one have a higher chance of winning because it looks like in the picture that the gear for the middles is faster and comes down first

The designer has replied

@Coffey_Factory

That’s a good question, it is technically random due to a sudo random starting position each run. The biggest case for a certain horse winning/losing consistently would be if one or more rails printed with defects. The mechanism will also have some randomness from how the balls need to roll down the rails a constantly changing distance, coupled with how the speed that the balls are hit also varies due to the eliptical gears.

@The3DPrintGirl

Replying to @Coffey_Factory :

yeah that's true

@whitebearpost

this is a good project I like it 😉

The designer has replied

@Coffey_Factory

thank you!

@whitebearpost

Replying to @Coffey_Factory :

you’re welcome

License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.