The KFM 107 is a two-cylinder,
two-stroke
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which re ...
, single ignition,
horizontally opposed
A flat engine is a piston engine where the cylinders are located on either side of a central crankshaft. Flat engines are also known as horizontally opposed engines, however this is distinct from the less common opposed-piston engine design, ...
aircraft engine
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbin ...
designed for
ultralight aircraft
Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and Aircraft flight control system, conventional three-a ...
and
motor glider
A motor glider is a fixed-wing aircraft that can be flown with or without engine power. The FAI Gliding Commission Sporting Code definition is: a fixed-wing aerodyne equipped with a means of propulsion (MoP), capable of sustained soaring flig ...
s.
[Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page G-5 Cybair Limited Publishing, 2001. ]
The engine was designed and produced by the KFM (Komet Flight Motor) Aircraft Motors Division of
Italian American Motor Engineering
Italian American Motor Engineering (IAME) is an Italian company founded in 1968. It is the parent company of the "Parilla", "Komet" and "Sirio" brand names and is the largest kart engines manufacturer. Its factory is located in the province of Be ...
of
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
and has been out of production since 1986.
Development
The KFM 107 is a conventional twin-cylinder engine that is very compact and light weight at only in its 107s version. The engine features single
capacitor discharge ignition
Capacitor discharge ignition (CDI) or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, gas turbine-powered aircraft, and some cars ...
, 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.
Most versions of the 107 produce at 6300 rpm for five minutes for take-off and at 6080 rpm continuous.
Variants
;107s: "Standard" version, direct drive, recoil start, , weight
;107e: "Electric" version, direct drive, electric start and alternator , weight
;107rs: "Standard with Reduction" version, reduction drive, , weight
;107er: "Electric & Reduction" version, direct drive, , weight
;107e Maxi: Upgraded version with an OVC carburetor with fixed jets, stroke, 334 cc (20.38 cu in), 11:1 compression ratio, 2.1:1 or optional 2.55:1 reduction drive. Produces at 6300 rpm for five minutes for take-off and at 6080 rpm continuous.
Applications
Specifications (107s)
See also
References
{{IAME
Air-cooled aircraft piston engines
Two-stroke aircraft piston engines