|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
CALCULATING RPM |
|
ASSUMES FINAL TRANSMISSION DRIVE RATIO IN HIGH GEAR IS 1:1 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
If you want to calculate the
engine RPM at a given speed knowing the tire diameter and gear ratio, use the following equation. |
|
RPM= |
MPH X Gear Ratio X 336 |
|
| |
|
TIRE DIAMETER |
|
| |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
SGC |
27 |
27.5 |
28 |
28.5 |
29 |
29.5 |
30 |
31 |
32 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
|
|
|
2.73 |
2050 |
2000 |
1950 |
1925 |
1900 |
1850 |
1825 |
1775 |
1725 |
1675 |
1625 |
1575 |
1525 |
1500 |
1450 |
1400 |
1375 |
|
|
|
2.9 |
2175 |
2125 |
2100 |
2050 |
2025 |
1975 |
1950 |
1875 |
1825 |
1775 |
1725 |
1675 |
1625 |
1600 |
1550 |
1500 |
1450 |
|
|
|
3.08 |
5300 |
2275 |
2225 |
2175 |
2150 |
2100 |
2075 |
2000 |
1950 |
1875 |
1875 |
1775 |
1725 |
1675 |
1625 |
1600 |
1500 |
|
|
|
3.21 |
2400 |
2375 |
2325 |
2275 |
2250 |
2200 |
2150 |
2100 |
2025 |
1975 |
1900 |
1850 |
1800 |
1750 |
1700 |
1675 |
1625 |
|
|
|
3.31 |
2475 |
2425 |
2375 |
2325 |
2300 |
2250 |
2225 |
2150 |
2075 |
2025 |
1975 |
1900 |
1850 |
1800 |
1750 |
1700 |
1675 |
|
|
|
3.42 |
2550 |
2525 |
2450 |
2400 |
2375 |
2325 |
2275 |
2200 |
2150 |
2100 |
2025 |
1950 |
1900 |
1850 |
1800 |
1775 |
1725 |
|
|
|
3.54 |
2650 |
2600 |
2550 |
2475 |
2450 |
2425 |
2375 |
2300 |
2225 |
2175 |
2000 |
2050 |
1975 |
1925 |
1875 |
1825 |
1775 |
|
|
|
3.73 |
2835 |
2775 |
2725 |
2650 |
2625 |
2575 |
2500 |
2425 |
2375 |
2300 |
2200 |
2150 |
2100 |
2025 |
1975 |
1925 |
1875 |
|
|
|
3.9 |
2925 |
2875 |
2800 |
2750 |
2700 |
2650 |
2625 |
2550 |
2450 |
2375 |
2300 |
2250 |
2175 |
2125 |
2075 |
2000 |
1975 |
|
|
|
4.1 |
3075 |
3025 |
2950 |
2875 |
2850 |
2800 |
2750 |
2650 |
2575 |
2500 |
2425 |
2350 |
2300 |
2225 |
2175 |
2125 |
2050 |
|
|
|
4.27 |
3200 |
3125 |
3075 |
3000 |
2975 |
2925 |
2875 |
2775 |
2700 |
2600 |
2525 |
2450 |
2400 |
2325 |
2275 |
2200 |
2150 |
|
|
|
4.56 |
3525 |
3350 |
3275 |
3200 |
3175 |
3100 |
3075 |
2975 |
2875 |
2775 |
2700 |
2625 |
2550 |
2475 |
2425 |
2350 |
1300 |
|
|
|
4.88 |
3650 |
3590 |
3500 |
3425 |
3400 |
3325 |
3275 |
3175 |
3075 |
2975 |
2900 |
2800 |
2750 |
2650 |
2575 |
2525 |
2450 |
|
|
|
5.13 |
3825 |
3750 |
3675 |
3600 |
3550 |
3475 |
3450 |
3325 |
3225 |
3125 |
3050 |
2950 |
2875 |
2800 |
2725 |
2650 |
2600 |
|
|
|
5.38 |
4025 |
3950 |
3875 |
3775 |
3750 |
3675 |
3625 |
3500 |
3400 |
3300 |
3200 |
3100 |
3025 |
2925 |
2850 |
2775 |
2700 |
|
|
|
5.57 |
4150 |
4075 |
4000 |
3900 |
3875 |
3800 |
3725 |
3625 |
3500 |
3400 |
3300 |
3200 |
3125 |
3025 |
2950 |
2875 |
2800 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
