The engine was designed and produced by the KFM (Komet Flight Motor) Aircraft Motors Division of Italian American Motor Engineering of Italy and has been out of production since 1986.[1][2]
Development
The KFM 107 is a conventional twin-cylinder engine that is very compact and light weight at only 15.2 kg (34 lb) in its 107s version. The engine features single capacitor discharge ignition, a single Tillotson butterfly-type carburetor, integral fuel pump, tuned exhaust system and reed valve induction. It was offered with 2:1 belt drive reduction system. Starting is electric starter or recoil starter.[1][2]
Most versions of the 107 produce 25 hp (19 kW) at 6300 rpm for five minutes for take-off and 22.5 hp (17 kW) at 6080 rpm continuous.[1][2]
Variants
107s
"Standard" version, direct drive, recoil start, 25 hp (19 kW), weight 15.2 kg (34 lb)[2]
107e
"Electric" version, direct drive, electric start and alternator 25 hp (19 kW), weight 19.1 kg (42 lb)[2]
107rs
"Standard with Reduction" version, reduction drive, 25 hp (19 kW), weight 17.5 kg (39 lb)[2]
107er
"Electric & Reduction" version, direct drive, 25 hp (19 kW), weight 21.4 kg (47 lb)[2]
107e Maxi
Upgraded version with an OVC carburetor with fixed jets, 64 mm (2.52 in) stroke, 334 cc (20.38 cu in), 11:1 compression ratio, 2.1:1 or optional 2.55:1 reduction drive. Produces 30 hp (22 kW) at 6300 rpm for five minutes for take-off and 27 hp (20 kW) at 6080 rpm continuous.[3]
