# \#harmonic-gearing **URL:** https://scanalyst.fourmilab.ch/tag/harmonic-gearing/2789.md [Latest](https://scanalyst.fourmilab.ch/latest.md) · [Categories](https://scanalyst.fourmilab.ch/categories.md) · [Tags](https://scanalyst.fourmilab.ch/tags.md) --- ## [Harmonic Gearing](https://scanalyst.fourmilab.ch/t/harmonic-gearing/2001)
**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\ **Replies:** 0\ **Last updated:** [14 September 2022 11:53 UTC](https://scanalyst.fourmilab.ch/t/harmonic-gearing/2001 "2022-09-14T11:53:13Z")
Harmonic gearing, using flexible spline gears which engage as they are deformed, allows very high reduction ratios (30 to 320 to one) in the same space a planetary gear train would provide a 10 to one ratio.…