| Model | Horsepower | Year(s) |
|---|---|---|
| MS-20 | 1.5 | 1941,1942 |
| MS-38 | 1.1 | 1938 |
| MS-39 | 1.1 | 1939 |
| N65WMLM | 65 | 1988 |
| N65WMLT | 65 | 1988 |
| N65WMYT | 65 | 1988 |
| OA-55 | 3 | 1931 |
| OA-60 | 3 | 1932 |
| OA-65 | 2.8 | 1933 |
| OB-65 | 2.8 | 1933 |
| OB-70 | 2.8 | 1934 |
| OK-55 | 8 | 1931 |
| OK-60 | 7 | 1932 |
| OK-75 | 8.1 | |
| OKL-55 | 8 | 1931 |
| OKL-60 | 7 | 1932 |
| P-30 | 6 | 1926 |
| P-35 | 8 | 1927 |
| P-40 | 13.15 | 1928 |
| P-45 | 12 | 1929 |