View source for Hirth F-30

{{Short description|German two-stroke aircraft engine}}
{{Use dmy dates|date=January 2022}}
{{Use British English|date=January 2022}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{|{{Infobox Aircraft Begin
| name=Hirth F-30
| image=
| caption=
}}{{Infobox Aircraft Engine
|type=Four-cylinder [[two-stroke]] [[aircraft engine]]
|manufacturer=[[Hirth]]
|national origin=Germany
|first run=
|major applications=
|produced=
|number built=
|developed from=
|variants with their own articles=
}}
|}
The '''Hirth F-30''' is a [[horizontally opposed]] four-cylinder, [[two-stroke]], [[carburetor|carburetted]] aircraft engine, with optional [[fuel injection]], designed for use on [[ultralight aircraft]] and [[homebuilt aircraft|homebuilts]]. It is manufactured by [[Hirth]] of Germany.<ref name="Cliche">Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, pages G-4 Cybair Limited Publishing, 2001. {{ISBN|0-9680628-1-4}}</ref><ref name="HirthF30ES">{{cite web|url = http://www.recpower.com/f302c11.htm|title = F-30 ES Fuel Injected ll0hp |accessdate = 2009-12-18|last = Recreational Power Engineering |authorlink = |year = n.d. |archiveurl = https://web.archive.org/web/20101127174327/http://recpower.com/f302c11.htm |archivedate = 27 November 2010}}</ref><ref name="HirthF30">{{cite web|url = http://www.recpower.com/f308.htm |title = F-30 2 cycle 80&nbsp;hp |accessdate = 2009-12-18|last = Recreational Power Engineering |authorlink = |year = n.d. |archiveurl = https://web.archive.org/web/20100927180952/http://recpower.com/f308.htm |archivedate = 27 September 2010}}</ref><ref name="Aerocrafter">Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 72. BAI Communications. {{ISBN|0-9636409-4-1}}</ref>
==Development==
The F-30 is equipped with a dual [[capacitor discharge ignition]] system and is free-air-cooled, with optional fan cooling. The cylinder walls are electrochemically coated with [[Nikasil]]. Standard starting is electric start and [[recoil start]] is not an option. The reduction drive system available is the G-40 gearbox with optional reduction ratios of 2.03:1, 2.25:1, 2.64:1, 2.96:1 and 3.33:1. A centrifugal clutch is also available as optional equipment.<ref name="Cliche" /><ref name="HirthF30ES" /><ref name="HirthF30" />
The engine runs on a 50:1 pre-mix of [[Avgas#Automotive gasoline|unleaded 93 octane auto fuel]] and oil.<ref name="Cliche" /><ref name="HirthF30ES" /><ref name="HirthF30" />
==Variants==
;F-30
:Four-cylinder horizontally opposed, two-stroke, aircraft engine with a dual 38&nbsp;mm diaphragm carburetors. Produces {{convert|85|hp|kW|0|abbr=on}} at 5,500&nbsp;rpm if free-air-cooled or {{convert|80|hp|kW|0|abbr=on}} at 5,500&nbsp;rpm if fan cooled. It has a factory rated [[time between overhaul]] (TBO) of 1,200 hours. Currently in production.<ref name="HirthF30" />
;F-30E
:Four-cylinder horizontally opposed, two-stroke, aircraft engine with fuel injection. Produces {{convert|90|hp|kW|0|abbr=on}} at 5,500&nbsp;rpm if free-air-cooled or {{convert|85|hp|kW|0|abbr=on}} at 5,500&nbsp;rpm if fan cooled. It has a factory rated TBO of 1,200 hours. Currently in production.<ref name="HirthF30" />
;F-30S
:Four-cylinder horizontally opposed, two-stroke, aircraft engine with dual integral pumper carburetors. Produces {{convert|100|hp|kW|0|abbr=on}} at 6200&nbsp;rpm if free-air-cooled or {{convert|95|hp|kW|0|abbr=on}} at 6,200&nbsp;rpm if fan-cooled. It has a factory rated TBO of 1,000 hours. Currently in production.<ref name="HirthF30ES" />
;F-30ES
:Four-cylinder horizontally opposed, two-stroke, aircraft engine with fuel injection. Produces {{convert|110|hp|kW|0|abbr=on}} at 6,200&nbsp;rpm if free-air-cooled or {{convert|105|hp|kW|0|abbr=on}} at 6,200&nbsp;rpm if fan-cooled. It has a factory rated TBO of 1,000 hours. Currently in production.<ref name="HirthF30ES" />
<!-- ==Operational history== -->
==Applications==
{{columns-list|colwidth=22em|
*[[ABS Aerolight Legacy]]
*[[ABS Aerolight Navigathor]]
*[[Acrolite]]
*[[Aeros UL-2000 Flamingo]]
*[[Airdrome Fokker D-VII]]
*[[Airdrome Nieuport 24]]
*[[American Sportscopter Ultrasport 496]]
*[[Aviastroitel AC-7M]]
*[[Denney Kitfox]]
*[[DF Helicopters DF334]]
*[[Falconar F11 Sporty]]
*[[Howland H-2 Honey Bee]]
*[[Kolb Mark III]]
*[[Lockheed Martin P-791]]<ref>{{Cite web|url=https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=791LM|title=FAA Registry - Aircraft - N-Number Inquiry|website=registry.faa.gov}}</ref>
*[[Paladin Hercules]]
*[[Para-Ski Top Gun]]
*[[Peak Aerospace Me 109R]]
*[[Rans S-12]]
*[[Solid Air Diamant Twin]]
*[[Swing-Europe Parashell]]
*[[Titan Tornado]]
}}
==Specifications (F-30ES) ==
{{pistonspecs|
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|ref=Recreational Power  Engineering<ref name="HirthF30ES" />
|type=Four-cylinder, two-stroke, horizontally opposed, aircraft engine
|bore={{convert|72|mm|in|1|abbr=on}}
|stroke={{convert|64|mm|in|1|abbr=on}}
|displacement=1,042 cc (63.6 cu in)
|length={{convert|380|mm|in|1|abbr=on}}
|diameter=
|width={{convert|660|mm|in|1|abbr=on}}
|height={{convert|355|mm|in|1|abbr=on}}
|weight={{convert|105|lb|kg|1|abbr=on}}, including starter and exhaust system, {{convert|129|lb|kg|1|abbr=on}} with gearbox, exhaust system and electric start. Fan cooling adds {{convert|8.5|lb|kg|1|abbr=on}}
|valvetrain=
|supercharger=
|turbocharger=
|fuelsystem=Fuel injection
|fueltype=[[Avgas#Automotive gasoline|unleaded 93 octane auto fuel]]
|oilsystem=50:1 fuel-oil premix or oil injection
|coolingsystem=free-air or fan
|power={{convert|110|hp|kW|0|abbr=on}} at 6,200&nbsp;rpm with free-air cooling, {{convert|105|hp|kW|0|abbr=on}} at 6,200&nbsp;rpm with fan cooling
|specpower=
|compression=9.5:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=
|designer=
|reduction_gear= G-40 gearbox with reduction ratios of 2.03:1, 2.25:1, 2.64:1, 2.96:1 and 3.33:1 available. Optional centrifugal clutch.
|general_other=
|components_other=
|performance_other=
}}
==See also==
{{aircontent
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|see also=
*[[2si 808]]
*[[Arrow 1000]]
*[[Rotax 912]]
|related=<!-- related developments -->
|similar aircraft=<!-- similar or comparable aircraft -->
|lists=
}}
==References==
{{Reflist}}
<!-- ==External links== -->
{{Hirth aeroengines}}
[[Category:Hirth aircraft engines]]
[[Category:Air-cooled aircraft piston engines]]
[[Category:Two-stroke aircraft piston engines]]