20 30 40 Gear Chart With Gear Ratio Calculator
20 30 40 Gear Chart With Gear Ratio Calculator - Click To View
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FOR 20, 30. 40 SERIES |
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AND TWIN COUNTERSHAFT TRANSMISSIONS |
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RATIO |
NO. TEETH |
GEAR I.D. NO. |
SET NO. |
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1 TO 1 |
25 |
51 |
90-0022 |
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25 |
51 |
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1.047 |
21 |
99 |
90-0018 |
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22 |
100 |
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1.083 |
24 |
97 |
90-0017 |
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26 |
98 |
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1.125 * |
24 |
95 |
90-0016 |
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27 |
96 |
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1.150 |
20 |
93 |
90-0015 |
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23 |
94 |
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1.174 * |
23 |
91 |
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27 |
92 |
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FINE TOOTH |
1.192 * |
26 |
89 |
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31 |
90 |
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1.217 |
23 |
87 |
90-0012 |
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28 |
88 |
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FINE TOOTH |
1.231 * |
26 |
85 |
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32 |
86 |
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1.263 |
19 |
83 |
90-0010 |
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24 |
84 |
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FINE TOOTH |
1.280 * |
25 |
81 |
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32 |
82 |
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1.300 |
20 |
264 |
90-0031 |
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26 |
265 |
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1.318 |
22 |
79 |
90-0008 |
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29 |
80 |
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1.350 |
20 |
266 |
90-0032 |
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27 |
267 |
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1.389 |
18 |
119 |
90-0023 |
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25 |
120 |
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1.421 |
19 |
133 |
90-0028 |
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27 |
134 |
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1.474 |
19 |
135 |
90-0029 |
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28 |
136 |
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1.529 |
17 |
123 |
90-0025 |
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26 |
124 |
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1.632 |
19 |
125 |
90-0026 |
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31 |
126 |
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1.777 |
18 |
127 |
90-0027 |
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32 |
128 |
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TO CALCULATE OVERALL GEAR RATIO |
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4 Wheel
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SCS
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Shiftable or
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| Rear Axle x Transfer x Head Set x Quick Change | ||||
| Example: | 6.20 x 2.00 x 1.389 x 1.389 = 23.92 | |||
| 2 Wheel | SCS | SCS | ||
| Planetary | Head Set or | Quick | ||
| Ratio x Rear End x Shiftable x Change | ||||
| Example: | 3.6 x 5.29 x 1.083 x 1.047 = 21.59 | |||
| under | under | |||
| NOTE: If any gear is in Overdrive | ||||
| divide by Overdrive last | ||||
| Example: | 3.6 x 5.29 x 1.083 divided by 1.047 = 19.69 | |||
| under | over | |||