Modular Gear Reducers
by mirk, published
Use This Project
Give a Shout Out
If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.Print Thing Tag
3:1 gear stages that can be assembled to get a gear ratio to any power of 3.
I needed to reduce the speed of a motor by a large degree. My first tries used a a worm gear, but I didn't have my support settings dialed in well enough to print one yet. I went with this design so it would be easy to add or remove stages depending on the desired gear ratio.
For my current project, I am using 6 stages of gear reduction. 3^6=729 so I have a 729:1 reduction in speed. Included with this is a 1:729 increase in torque.
Print one of the gear stages and one gear mount. Be careful depending on your machine, as the raft for the gear stage just barely fit on my ToM ABP.
The two pieces screw together using an M3 socket head screw. I used leftover M3x16's from building my ToM, however there is room for larger and smaller lengths. Any extra length of bolt will simply fall into the cutout in front of the gear two stages behind itself, and this actually helps to line them up better as well.
Screw the gear mounts down to a scrap piece of wood, as shown in the pictures. Holes are provided for 2 screws, however I used just the inner hole because it gave more play for the gears (preventing them from jamming) and also more precision in placement because the second screw always seems to move it out of place. Both might be a good idea for just the first one.
Upgrade this Thing with Thingiverse AppsCustomization
Edit, personalize, or revise this ThingTools and Utilities
Repair, slice, or enhance this Thing
Modular Gear Reducers by mirk is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
What does this mean?
- You must attribute (give credit) to the creator of this Thing.
- You must distribute Remixes under the same license as the original.
- Remixing or Changing this Thing is allowed.
- Commercial use is not allowed.
Show Some Love
Say thanks by giving mirk a tip and help them continue to share amazing Things with the Thingiverse community.Tip Designer
We're sure mirk would love to see what you've printed. Please document your print and share a Make with the community.
To post a Make simply visit this Thing again and click I Made One to start uploading your photo. It’s even easier to post a Make via the Thingiverse Mobile app (available via Google Play and Apple App Store).