NASA NTRS · 19820000075
High-Ratio Gear Train
Abstract
Proposed arrangement of two connected planetary differentials results in gear ratio many times that obtainable in conventional series gear assembly of comparable size. Ratios of several thousand would present no special problems. Selection of many different ratios is available with substantially similar gear diameters. Very high gear ratios would be obtained from small mechanism.
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Lefever, A. E.. 1982-12-01. High-Ratio Gear Train. https://ntrs.nasa.gov/citations/19820000075
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