Calculate external, internal, worm, rack, bevel and planetary gear sets with this tool.
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Updated
Apr 22, 2026 - HTML
Calculate external, internal, worm, rack, bevel and planetary gear sets with this tool.
Python-based universal automatic transmission analyzer for planetary-gearset transmissions. Uses JSON-defined topology and shift schedules to solve gear ratios and member speeds, with clean tabular output for any speed automatics. Ravigneaux gearsets not yet supported.
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