All two-stroke cycle engines that have been reported in the text are listed here in chronological order. The country of manufacture or conversion is in italics. The bold entries in the Manufacturer & Model column are the U.S. military designations. When there are several engines introduced in the same year, they are listed alphabetically by the manufacturer's name. Within each year for the same manufacturer, the engines are listed by increasing displacement.
The dates given in this table are approximate. It should be borne in mind that these dates are not suitable for the establishment of any historical priority, but rather are presented to show general trends over time.
| Year | Manufacturer & Model | HP Range | Number of Cylinders | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1910 | Edwards (O-125) UK | 15 | 2 | ||||||||
| 1910 | Edwards (O-255) UK | 30 | 4 | ||||||||
| 1910 | Wolverine (O-200) US | 25-30 | 2 | ||||||||
| 1911 | Edwards (O-380) UK | 45 | 6 | ||||||||
| 1911 | Edwards (O-505) UK | 60 | 8 | ||||||||
| 1911 | Schlumberger Germany | - | 4 | ||||||||
| 1922 | Clément-Bayard (O-15) France | 7 | 2 | ||||||||
| 1922 | Clément-Bayard (O-30) France | 14 | 4 | ||||||||
| 1922 | Levis (O-85) UK | 35 | 4 | ||||||||
| 1923 | Gaz M-7, AB-20 USSR | 15 | 2 | ||||||||
| 1925 | Voilet (O-30) France | 6 | 2 | ||||||||
| 1925 | Voilet (OL-91) France | - | 4 | ||||||||
| 1926 | Samolot-Wallis M.VIII (O-42) Poland | - | 2 | ||||||||
| 1929 | Jacobs B-1 (O-35) US | 20-25 | 2 | ||||||||
| 1930 | Brownback Tiger Junior 50 (O-155) US | 50 | 4 | ||||||||
| 1930 | Cleone Glider Engine (O-40) US | 8-15 | 2 | ||||||||
| 1930 | Cleone D-25 (O-77) US | 25 | 2 | ||||||||
| 1930 | Cleone E-30, EG-30 (O-63) US | 25-30 | 2 | ||||||||
| 1931 | Cyclomotor A-2-25 (O-72) US | 22 | 2 | ||||||||
| 1931 | Schliha (O-73) Germany | 36-40 | 2 | ||||||||
| 1931 | Schliha F-1200 (O-85) Germany | 23-36 | 2 | ||||||||
| 1934 | Deicke ADM-7 (O-46) Germany | 18 | 2 | ||||||||
| 1935 | AVA Type 4A-00 (O-66) France | 25-28 | 4 | ||||||||
| 1936 | AVA Type 4A-02 (O-86) France | 35-40 | 4 | ||||||||
| 1936 | Kroeber M4 (O-39) Germany | 18 | 2 | ||||||||
| 1936 | Scott US | 40 | 2 | ||||||||
| 1937 | Lipton H.C.G. (O-70) France | 15-18 | 2 | ||||||||
| 1940 | Righter 2-GS-17 (O-15) US | 6-8 | 2 | ||||||||
| 1940 | Righter 2-S-45 (O-45) US | 20-35 | 2 | ||||||||
| 1941 | Weaver US | 100 | 4 | ||||||||
| 1945 | McCulloch 4300 (O-90) US | 65 | 4 | ||||||||
| 1945 | Muncie Gear XO-40-1 US | 18-20 | 2 | ||||||||
| 1945 | Napier Nomad 1 [diesel] (OL-2500) UK | 2248-3000 | 12 | ||||||||
| 1945 | Nelson H-44 (O-44) US | 25 | 4 | ||||||||
| 1945 | Nelson H-49 (O-49) US | 28 | 4 | ||||||||
| 1945 | Righter US | 16 | 4 | ||||||||
| 1949 | Ambrosini P.25 (O-50) Italy | 22 | 2 | ||||||||
| 1949 | Nelson H-59 (O-59) US | 40 | 4 | ||||||||
| 1950 | McCulloch 4318 (O-100) US | 72-92 | 4 | ||||||||
| 1953 | Napier Nomad 2 [diesel] (OL-2500) UK | 3135-4095 | 12 | ||||||||
| 1955 | McCulloch 6318, TC6150 (O-150) US | 110-120 | 6 | ||||||||
| 1955 | Nelson H-63 (YO-65) US | 43-45 | 4 | ||||||||
| 1960 | Pollmann Germany | 20 | 2 | ||||||||
| 1965 | Hirth F10A (O-35) Germany | 24-26 | 4 | ||||||||
| 1969 | Janowski Saturn 500 (O-31) Poland | 25 | 2 | ||||||||
| 1970 | Borzecki 2RB (O-33) Poland | 16-24 | 2 | ||||||||
| 1970 | Cicaré Argentina | 30 | 2 | ||||||||
| 1972 | Aerosport-Rockwell LB600/2 (O-32) US | 38-45 | 2 | ||||||||
| 1973 | Cicaré 4C2T (O-80) Argentina | 70 | 4 | ||||||||
| 1975 | Herbrandson Dyad 280 (O-17) US | 20 | 2 | ||||||||
| 1978 | Cicaré 4C-27 Argentina | 190-200 | 4 | ||||||||
| 1978 | Weslake Type 060 (O-4) UK | 5 | 2 | ||||||||
| 1978 | Weslake Type 116 (O-7) UK | 8 | 2 | ||||||||
| 1978 | Weslake Type 274, NGL WAM 274 (O-17) UK | 18 | 2 | ||||||||
| 1978 | Weslake Type 430 (O-26) UK | 40 | 2 | ||||||||
| 1978 | Weslake Type 548 (O-33) UK | 36 | 4 | ||||||||
| 1978 | Weslake Type 860 (O-52) UK | - | 4 | ||||||||
| 1981 | Butterfly, JCV (O-17) Belgium | 22 | 2 | ||||||||
| 1981 | IAME KFM 107 (O-18) Italy | 22-25 | 2 | ||||||||
| 1981 | Icarus, Skylark (O-20) Australia | 22 | 2 | ||||||||
| 1981 | JPX PUL 425 (O-26) France | 24 | 2 | ||||||||
| 1981 | Weslake Type 200 (O-12) UK | 12 | 2 | ||||||||
| 1981 | Weslake Type 342, NGL WAM 342 (O-21) UK | 26-30 | 2 | ||||||||
| 1982 | AED Spitfire 440 LC (OL-27) US | 60 | 2 | ||||||||
| 1982 | Huosai HS-16 (O-17) China | 16 | 4 | ||||||||
| 1982 | Huosai HS-26 (O-31) China | 26 | 4 | ||||||||
| 1982 | Limbach L 275 E (O-17) Germany | 20-25 | 2 | ||||||||
| 1982 | Bakanov M-18-01 USSR/Russia | 40 | 2 | ||||||||
| 1982 | Rebel Twin 2-205 (O-25) US | 25 | 2 | ||||||||
| 1983 | KKBM P-020 (O-17) USSR/Russia | 20 | 2 | ||||||||
| 1983 | NGL WAM 684 (O-42) UK | - | 4 | ||||||||
| 1984 | KKBM P-032, P-033 (O-27) USSR/Russia | 32 | 2 | ||||||||
| 1984 | Piper P.80/2 (O-5) UK | 5 | 2 | ||||||||
| 1984 | Piper P.200 (O-12) UK | 16 | 2 | ||||||||
| 1985 | Huosai HS-510 China | 30 | 4 | ||||||||
| 1985 | IAME KFM 107 Maxi (O-20) Italy | 27-30 | 2 | ||||||||
| 1985 | Zenoah G50 (O-30) Japan | 48 | 2 | ||||||||
| 1986 | Arrow GT 500 (O-30) Italy | 65 | 2 | ||||||||
| 1986 | Arrow GT 1000 (O-61) Italy | 110 | 4 | ||||||||
| 1987 | Hirth F30 series (O-64) Germany | 65-110 | 4 | ||||||||
| 1987 | Hirth F30A (O-78) Germany | 80-130 | 4 | ||||||||
| 1987 | Limbach L 550 E (O-33) Germany | 50 | 4 | ||||||||
| 1987 | Yuhe YH 280 (O-17) China | 15 | 4 | ||||||||
| 1988 | Hirth F23A (O-32) Germany | 40 | 2 | ||||||||
| 1988 | KKBM SB-039 USSR/Russia | 67 | 2 | ||||||||
| 1989 | Hirth F22 (O-23) Germany | 23 | 2 | ||||||||
| 1989 | Limbach L 90 E (O-5) Germany | 6 | 2 | ||||||||
| 1991 | Bakanov M-19, VOKBM M-29 Russia | 80 | 4 | ||||||||
| 1992 | Arrow GP 1000 (O-61) Italy | 120 | 4 | ||||||||
| 1994 | Arrow GP 1500 (O-91) Italy | 180 | 6 | ||||||||
| 1995 | Arrow AE 530 AC (O-32) Italy | 68 | 2 | ||||||||
| 1995 | Arrow AE 1070 AC (O-65) Italy | 120 | 4 | ||||||||
| 1995 | JPX D 320 DD (O-20) France | 18-24 | 2 | ||||||||
| 1995 | JPX D 320 R [geared] (O-20) France | 18-24 | 2 | ||||||||
| 1995 | Walter M 202 (O-41) Czech Republic | 45-65 | 2 | ||||||||
| 1996 | Continental GAP (OL-240) [diesel] US | 200 | 4 | ||||||||
| 2000 | Kazan P-800 (O-49) Russia | 65 | 4 | ||||||||
| 2000 | Kazan P-1000 (O-66) Russia | 80 | 4 | ||||||||
| 2000 | Motiv DD-700/45R (O-43) Russia | 45 | 2 | ||||||||
| 2002 | JPX D 330 D (O-20) France | 20-30 | 2 | ||||||||
| 2002 | JPX D 330 R [geared] (O-20) France | 25-30 | 2 | ||||||||
| 2002 | Zanzottera 1000 Boxer (O-60) Italy | 72 | 4 | ||||||||
| 2002 | Zanzottera B2000i (O-115) Italy | 130 | 6 | ||||||||
| 2003 | Zanzottera 498ia (O-30) Italy | 38 | 2 | ||||||||
| 2004 | Zanzottera B2000ir (O-115) Italy | 170 | 6 | ||||||||