Engine rpm to Main rotor rpm = 9.625 : 1
Tail rotor rpm to Main rotor rpm = 5.5 : 1
| Head RPM | 1309 | 1345 | 1382 | 1418 | 1455 | 1491 | 1527 | 1584 | 1600 | 1636 | 1673 | 1709 | 1745 | 1782 | 1818 | 1854 | 1890 | 1927 | 1963 | 2000 | 2036 | 2072 | 2109 |
| Engine RPM | 12800 | 13000 | 13300 | 13700 | 14000 | 14400 | 14700 | 15100 | 15400 | 15800 | 16100 | 16500 | 16800 | 17200 | 17500 | 17845 | 18191 | 18547 | 18894 | 19250 | 19596 | 19943 | 20299 |
| T/R RPM | 7200 | 7400 | 7600 | 7800 | 8000 | 8200 | 8400 | 8600 | 8800 | 9000 | 9200 | 9400 | 9600 | 9800 | 10000 | 10200 | 10400 | 10600 | 10800 | 11000 | 11200 | 11400 | 11600 |
| M/R MPH | 189 | 194 | 199 | 205 | 210 | 215 | 220 | 225 | 231 | 236 | 241 | 246 | 252 | 257 | 262 | 267 | 273 | 278 | 283 | 288 | 288 | 294 | 304 |
| RPM Range | Gray = Practice/Learning | Yellow = 3D | Green = Racing | ||||||||||||||||||||
This conversion page was inspired by the conversion chart on
Chris Yeske's ZXX website.
Here are some other informative graphs about centrifical forces and blade weight for 60 size heli's.