Cycloidal Gearbox

Hardware

mechanical gearbox

SHOW HN2026

Legend

Cycloidal Gearbox

I'm a 15 Year Old Wannabe Engineer, This Is a Cycloidal Gearbox I Built

github.com

#cycloidal gearbox#cycloidal drive#low backlash gearbox#fusion 360 python

338points
115comments
#109of 4,366 in 2026
Top 3%of 2026 by points

How HN took it

LovedMost comments that take a side are positive

24 positive, 11 neutral or asking, 3 mixed, 0 critical, out of 38 comments about the project. Thread score +0.59.

Execution: 2 for, 0 againstIdea: 1 for, 0 against

The thread, comment by comment

Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.

positive neutral or mixed critical about another commenter or something else the maker

What HN said

What people liked

  • Impressive work for a 15-year-old; craftsmanship and documentation praised

    From 3 comments
    • Impressive work for someone of any age! - any project that involves hardware or physical objects (especially ones you are manufacturing!) is impressive - the craftsmanship -…
      sota_pop on HN
    • Don’t listen to people telling you not to post your age on the internet. This is solid work and you did this instead of being stuck in one of the hundreds of +1 dopamine traps in…
      Izmaki on HN
    • V2 to V3 iteration was actually impressive regardless of age
      elsaicequeen on HN
  • Encouragement to drop the wannabe label

    From 3 comments
    • I think you can drop the wannabe label. Of course you have a long way to go and much to learn but I think you are already an engineer, just one at the very start of what might be…
      ninalanyon on HN
    • Congrats! You are not a wannabe engineer, you are an engineer. If you have the motivation to chase your passion to build these machines, you are already an engineer. Keep going!
      yitchelle on HN
    • You are a very talented 15 year old engineer. Not a wannabe. Just getting a head start on the imposter syndrome! Welcome to the club
      bluelightning2k on HN

Objections

  • Posting age on a public forum is a bad idea

    From 3 comments
    • Don't post your age on the internet :) Project looks cool
      morelikeborelax on HN
    • it is pretty cool, but posting your age + an (likely) AI project on hacker news is probably a bad idea.
      bunchy7s on HN
    • Those saying it's fine come from a good place. I come from a world where we see young people groomed, pursued and manipulated. There is no serious reason to posting your age as a…
      morelikeborelax on HN
  • Project likely AI-generated

    From 1 comment
    • it is pretty cool, but posting your age + an (likely) AI project on hacker news is probably a bad idea.
      bunchy7s on HN

Requests

  • Add a description of what the gearbox does to the README

    From 1 comment
  • Measure backlash and efficiency under load

    From 1 comment
    • cycloidal designs are a great thing to have actually built rather than just read about. the eccentric motion is easy to follow on paper and then surprisingly fiddly once real…
      useiris on HN
  • Export SVG files for CNC cutting

    From 1 comment

Questions

  • What is a cycloidal gearbox and how does it compare to toothed gears?

    From 2 comments
    • What is it? Is this like a gear, where the output shaft turns at some fraction of the input shaft? Is better or worse than traditional toothed gears in some way?
      two_handfuls on HN
    • What is it?
      bilsbie on HN

Category, keywords, summaries and labels on this page were made by AI (Thread Reader v2) and not checked by hand. Each point links to the comments it came from.

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