KFM 107

{{Infobox Aircraft Begin

| name = KFM 107

| image = KFM 107.jpg

| caption = KFM 107 engine on display

}}{{Infobox Aircraft Engine

| type = Two-stroke aircraft engine

| manufacturer = Italian American Motor Engineering

| national origin = Italy

| first run =

| major applications =

| produced =

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| developed from =

| variants with their own articles =

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The KFM 107 is a two-cylinder, two-stroke, single ignition, horizontally opposed aircraft engine designed for ultralight aircraft and motor gliders.Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-5 Cybair Limited Publishing, 2001. {{ISBN|0-9680628-1-4}}{{cite web|url = http://www.italmotion.com/1071.html|title = KFM 107|accessdate = 2010-02-14|last = Black|first = Don & Margaret|date = August 2009|url-status = dead|archiveurl = https://web.archive.org/web/20091016071338/http://www.italmotion.com/1071.html|archivedate = 2009-10-16}}

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 {{convert|15.2|kg|lb|0|abbr=on}} 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 {{convert|25|hp|kW|0|abbr=on}} at 6300 rpm for five minutes for take-off and {{convert|22.5|hp|kW|0|abbr=on}} at 6080 rpm continuous.

Variants

;107s: "Standard" version, direct drive, recoil start, {{convert|25|hp|kW|0|abbr=on}}, weight {{convert|15.2|kg|lb|0|abbr=on}}

;107e: "Electric" version, direct drive, electric start and alternator {{convert|25|hp|kW|0|abbr=on}}, weight {{convert|19.1|kg|lb|0|abbr=on}}

;107rs: "Standard with Reduction" version, reduction drive, {{convert|25|hp|kW|0|abbr=on}}, weight {{convert|17.5|kg|lb|0|abbr=on}}

;107er: "Electric & Reduction" version, direct drive, {{convert|25|hp|kW|0|abbr=on}}, weight {{convert|21.4|kg|lb|0|abbr=on}}

;107e Maxi: Upgraded version with an OVC carburetor with fixed jets, {{convert|64|mm|in|2|abbr=on}} stroke, 334 cc (20.38 cu in), 11:1 compression ratio, 2.1:1 or optional 2.55:1 reduction drive. Produces {{convert|30|hp|kW|0|abbr=on}} at 6300 rpm for five minutes for take-off and {{convert|27|hp|kW|0|abbr=on}} at 6080 rpm continuous.{{cite web|url = http://www.italmotion.com/maxi.html|title = KFM 107e Maxi|accessdate = 2010-02-14|last = Black|first = Don & Margaret|authorlink = |date = August 2009|archive-url = https://web.archive.org/web/20091016071406/http://www.italmotion.com/maxi.html|archive-date = 2009-10-16|url-status = dead}}

Applications

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Specifications (107s)

{{pistonspecs

| ref = Black

| type = Twin-cylinder, horizontally opposed, two-stroke aircraft engine

| bore = {{convert|60|mm|in|2|abbr=on}}

| stroke = {{convert|52|mm|in|2|abbr=on}}

| displacement = 294 cc (17.94 cu in)

| length = {{convert|432|mm|in|2|abbr=on}}

| diameter =

| width = {{convert|440|mm|in|2|abbr=on}}

| height = {{convert|353|mm|in|2|abbr=on}}

| weight = {{convert|15.2|kg|lb|0|abbr=on}}

| valvetrain = reed valve induction

| supercharger =

| turbocharger =

| fuelsystem =

| fueltype =

| oilsystem = premixed 4% oil and fuel

| coolingsystem = air cooled

| power = {{convert|25|hp|kW|0|abbr=on}} at 6300 rpm for five minutes for take-off, {{convert|22.5|hp|kW|0|abbr=on}} at 6080 rpm continuous

| specpower =

| compression = 10.5:1

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| reduction_gear = none on the "s" model

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}}

References

Category:Air-cooled aircraft piston engines

Category:Two-stroke aircraft piston engines