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SRAM G9[1] | ||||||||||||||||||
Number of gear teeth | Number of gear teeth | |||||||||||||||||
Gear | Sun Gear 1 | Pinion to Sun 1 | Pinion to Ring 1 | Ring gear 1 | 1=R to P, P to S 2=Direct, 3=P to R | Gear Drive Ratio | Stage 1 drive ratio as fraction | Sun Gear 2 | Pinion to Sun 2 | Pinion to Ring 2 | Ring gear 2 | Path: 1=R to P, 2=Direct, 3=P to R | Gear Drive Ratio | Stage 2 drive ratio as fraction | Total Drive Ratio[2] | Total drive ratio as fraction | Ratio incre- ment | |
1 | 57 | 12 | 15 | 84 | 1 | 0.541 | 112/207 | 45 | 24 | 24 | 93 | 2 | 1.000 | 1 | 0.541 | 112/207 | ||
1 | 54 | 15 | 15 | 84 | 1 | 0.609 | 14/23 | 45 | 24 | 24 | 93 | 2 | 1.000 | 1 | 0.609 | 14/23 | 1.125 | |
2 | 48 | 21 | 15 | 84 | 1 | 0.710 | 49/69 | 45 | 24 | 24 | 93 | 2 | 1.000 | 1 | 0.710 | 49/69 | 1.167 | |
3 | 57 | 12 | 15 | 84 | 1 | 0.541 | 112/207 | 45 | 24 | 24 | 93 | 3 | 1.484 | 1 15/31 | 0.803 | 224/279 | 1.131 | |
4 | 54 | 15 | 15 | 84 | 1 | 0.609 | 14/23 | 45 | 24 | 24 | 93 | 3 | 1.484 | 1 15/31 | 0.903 | 28/31 | 1.125 | |
5 | 48 | 21 | 15 | 84 | 1 | 0.710 | 49/69 | 45 | 24 | 24 | 93 | 3 | 1.484 | 1 15/31 | 1.054 | 1 5/93 | 1.167 | |
6 | 57 | 12 | 15 | 84 | 1 | 0.541 | 112/207 | 57 | 12 | 24 | 93 | 3 | 2.226 | 2 7/31 | 1.204 | 1 19/93 | 1.143 | |
7 | 54 | 15 | 15 | 84 | 1 | 0.609 | 14/23 | 57 | 12 | 24 | 93 | 3 | 2.226 | 2 7/31 | 1.355 | 1 11/31 | 1.125 | |
8 | 48 | 21 | 15 | 84 | 1 | 0.710 | 49/69 | 57 | 12 | 24 | 93 | 3 | 2.226 | 2 7/31 | 1.581 | 1 18/31 | 1.167 | |