KFM 107
Italian twin-cylinder aircraft engine
title: "KFM 107" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["air-cooled-aircraft-piston-engines", "two-stroke-aircraft-piston-engines"] description: "Italian twin-cylinder aircraft engine" topic_path: "general/air-cooled-aircraft-piston-engines" source: "https://en.wikipedia.org/wiki/KFM_107" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Italian twin-cylinder aircraft engine ::
::data[format=table title="infobox aero engine"]
| Field | Value |
|---|---|
| name | KFM 107 |
| image | KFM 107.jpg |
| caption | KFM 107 engine on display |
| engine_type | Two-stroke aircraft engine |
| manufacturer | Italian American Motor Engineering |
| national_origin | Italy |
| :: |
| name = KFM 107 | image = KFM 107.jpg | caption = KFM 107 engine on display | engine_type = Two-stroke aircraft engine | manufacturer = Italian American Motor Engineering | national_origin = Italy | first_run = | major_applications = | produced = | number_built = | developed_from = | variants_with_their_own_articles =
The KFM 107 is a two-cylinder, two-stroke, single ignition, horizontally opposed aircraft engine designed for ultralight aircraft and motor gliders.
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.
Development
The KFM 107 is a conventional twin-cylinder engine that is very compact and light weight at only 15.2 kg 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.
Most versions of the 107 produce 25 hp at 6300 rpm for five minutes for take-off and 22.5 hp at 6080 rpm continuous.
Variants
;107s: "Standard" version, direct drive, recoil start, 25 hp, weight 15.2 kg ;107e: "Electric" version, direct drive, electric start and alternator 25 hp, weight 19.1 kg ;107rs: "Standard with Reduction" version, reduction drive, 25 hp, weight 17.5 kg ;107er: "Electric & Reduction" version, direct drive, 25 hp, weight 21.4 kg ;107e Maxi: Upgraded version with an OVC carburetor with fixed jets, 64 mm stroke, 334 cc (20.38 cu in), 11:1 compression ratio, 2.1:1 or optional 2.55:1 reduction drive. Produces 30 hp at 6300 rpm for five minutes for take-off and 27 hp at 6080 rpm continuous.
Applications
- Alpha Marco J-5
- Baker Bobcat
- Danieli Piuma
- Diehl AeroNautical XTC Hydrolight
- Latécoére 225
- Monnett Monerai P
- Monnett Moni
- Phase 3 Eclipse
- Rutan Solitaire
- Sadler Vampire
Specifications (107s)
| ref = Black | type = Twin-cylinder, horizontally opposed, two-stroke aircraft engine | bore = 60 mm | stroke = 52 mm | displacement = 294 cc (17.94 cu in) | length = 432 mm | diameter = | width = 440 mm | height = 353 mm | weight = 15.2 kg | valvetrain = reed valve induction | supercharger = | turbocharger = | fuelsystem = | fueltype = | oilsystem = premixed 4% oil and fuel | coolingsystem = air cooled | power = 25 hp at 6300 rpm for five minutes for take-off, 22.5 hp at 6080 rpm continuous | specpower = | compression = 10.5:1 | fuelcon = | specfuelcon = | oilcon = | power/weight = | designer = | reduction_gear = none on the "s" model | general_other = | components_other = | performance_other =
References
References
- Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page G-5 Cybair Limited Publishing, 2001. {{ISBN. 0-9680628-1-4
- Black, Don & Margaret. (August 2009). "KFM 107".
- Black, Don & Margaret. (August 2009). "KFM 107e Maxi".
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