| Model | Horsepower | Year(s) |
|---|---|---|
| RDL-24 | 40 | 1962 |
| RDL-25 | 40 | 1963 |
| RDL-26 | 40 | 1964 |
| RDL-27 | 40 | 1965 |
| RDL-28 | 40 | 1966 |
| RDL-29 | 40 | 1967 |
| RDL-30 | 40 | 1968 |
| RDS-20 | 35 | 1958 |
| RDS-21 | 35 | 1959 |
| RDS-22 | 40 | 1960 |
| RDS-23 | 40 | 1961 |
| RDS-24 | 40 | 1962 |
| RDS-25 | 40 | 1963 |
| RDS-26 | 40 | 1964 |
| RDS-27 | 40 | 1965 |
| RDS-28 | 40 | 1966 |
| RDS-29 | 40 | 1967 |
| RDS-30 | 40 | 1968 |
| RDSL-20 | 35 | 1958 |
| RDSL-21 | 35 | 1959 |