IAME KFM engines were built by Ital-American Motor Engineering (IAME) of Zingonia, Italy. The Komet Flight Motors (KFM) name had been used 20 years earlier by Heinz Pollmann (HEPU) of Germany. The relationship between the two firms is unknown to the compiler, but the IAME KFM 112 below has identical dimensions to the Pollmann KFM 40/3500 series. Both engines are believed to be derived from VW auto engines. Similarly, the compiler suggests that the dimensions of the two-stroke KFM 107 below may be the same as those for the Pollmann two-stroke engine. The IAME firm was founded in 1981, principally to serve the US ultralight and lightplane markets. The developer of the IAME engines was Cesare Bossaglia, who died in the mid-1980s. The firm ceased aircraft engine production in 1990. The resultant loss of this source of engines led Jabiru Aircraft of Australia to develop their own family of successful engines. Italmotion, the US IAME Distributor, still has a limited supply of parts.
O-18 (2-Stroke) -- {2.362 / 2.047 / 17.9} / {60 / 52 / 294}
Same stroke as O-20.
2cyl; KFM 107; 22hp@6080rpm, 25@6300 (TO); 1981-1985; Wt = 34#.
Direct drive.
J81-82toJ84-85; SA8/81.
Applications: (US) Monnett Moni motorglider.
O-20 (2-Stroke) -- {2.520 / 2.047 / 20.4} / {64 / 52 / 335}
Same stroke as O-18.
2cyl; KFM 107 Maxi, Maxi ER; 27hp@6080rpm, 30@6300 (TO); 1985-1993; Wt = 42-50#.
Direct drive (Maxi) with Wt = 42#; geared to 0.5 by a V-belt (Maxi ER) with Wt = 50#.
BGP; J85-86toJ92-93.
Applications: (Italy) Tiziano Danieli Piuma motorglider, Piuma Evolution; (US) Monnett Moni motorglider.
O-55 -- {3.543 / 2.835 / 55.9} / {90 / 72 / 916}
Same bore and stroke as O-111.
2cyl; KFM 105; 35hp@3665rpm, 40@4000 (TO); 1982-1987; Wt = 88-102#.
Engine did not go into production.
J82-83toJ86-87; SA12/88.
Applications: None found.
O-79 -- {3.150 / 2.520 / 78.5} / {80 / 64 / 1287}
Same stroke as O-99.
4cyl; KFM 112; 50hp@N/Arpm; 1984-1987; Wt = N/A.
J84-85toJ86-87.
Applications: None found.
O-99 -- {3.543 / 2.520 / 99.4} / {90 / 64 / 1629}
Same stroke as O-79.
4cyl; KFM 112E, ER; 60hp@3000rpm, 62@3600 (TO); 1986-1993; Wt = 119#.
BGP; J87-88toJ92-93; SA10/86, 8/87, 4/88, 12/88.
Applications: (Australia) Jabiru prototype (planned for Jabiru production until IAME ceased activity).
O-111 -- {3.543 / 2.835 / 111.8} / {90 / 72 / 1832}
Same bore and stroke as O-56.
4cyl; KFM 104; 70hp@3475rpm, 78@3900 (TO); 1981-1988; Wt = 150-163#.
Five versions developed, but did not go into full production.
J81-82toJ86-87; SA7/81, 8/81, 12/88.
Applications: (US) Monnett Sonerai II, Monex.