Keywords: Fixed Diff C.svg A fixed differential gear system This arrangement has a typical ratio of between 20 1 and 500 1 The ratio is given by <math>m_G \left \frac N_ R1 N_ S1 +1\right \frac N_ R2 N_ P1 N_ R2 N_ P1 -N_ R1 N_ P2 </math> where <math>N_ S1 </math> is the number of teeth on the No 1 Sun gear S1 red <math>N_ R1 </math> is the number of teeth on the No 1 Ring gear R1 yellow <math>N_ R2 </math> is the number of teeth on the No 2 Ring gear R2 green <math>N_ P1 </math> is the number of teeth on the No 1 Planet gear P1 dark blue on the left <math>N_ S2 </math> is the number of teeth on the No 2 Planet gear P2 dark blue on the right The fixed member is the No 1 Ring the input member is the Sun S1 red and the output member is the No 2 Ring self-made Inkscape 2008-03-18 Inductiveload Differential gear systems Drawings of gears and gearboxes Planetary gearing Transmissions SVG machinery |