| Model | Horsepower | Year(s) |
|---|---|---|
| RDSL-22 | 40 | 1960 |
| RDSL-23 | 40 | 1961 |
| RDSL-24 | 40 | 1962 |
| RDSL-25 | 40 | 1963 |
| RDSL-26 | 40 | 1964 |
| RDSL-27 | 40 | 1965 |
| RDSL-28 | 40 | 1966 |
| RDSL-29 | 40 | 1967 |
| RDSL-30 | 40 | 1968 |
| RJE-18 | 30 | 1956 |
| RJE-19 | 35 | 1957 |
| RJEL-18 | 30 | 1956 |
| RJEL-19 | 35 | 1957 |
| RK-24 | 40 | 1962 |
| RK-25 | 40 | 1963 |
| RK-26 | 40 | 1964 |
| RK-27 | 40 | 1965 |
| RK-28 | 40 | 1966 |
| RK-29 | 40 | 1967 |
| RK-30 | 40 | 1968 |