2si 230
| {{Infobox Aircraft Begin
| name=2si 230 | image= | caption= }}{{Infobox Aircraft Engine |type= Two-stroke aircraft engine |manufacturer=2si |national origin=United States |first run= |major applications= |produced= |number built= |program cost= |unit cost= |developed from= |variants with their own articles= }} |
The 2si 230 is a family of single-cylinder, two-stroke, single ignition, aircraft engines that were designed for ultralight aircraft.Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-2 Cybair Limited Publishing, 2001. {{ISBN|0-9680628-1-4}}
The basic engine was originally designed and produced by JLO-Motorenwerke of Germany and was later acquired by the AMW Cuyuna Engine Company of Beaufort, South Carolina and marketed under the Cuyuna brand name. Later the engine was marketed by Cuyuna under the Two Stroke International (2si) brand. Cuyuna no longer markets engines for aircraft use although the 230 is still in production as a diesel/multifuel or gasoline industrial and marine engine.{{cite web |date=n.d. |title=2si Company Profile |url=http://www.2si.com/2si_company_profile.htm |url-status=dead |archiveurl=https://web.archive.org/web/20100115032358/http://www.2si.com/2si_company_profile.htm |archivedate=2010-01-15 |accessdate=2010-02-16}}{{cite web |date=n.d. |title=Diesel / Multi-fuel Engine - Model 230 MF - Marine and Industrial Applications |url=http://www.2si.com/230_mf_spec.htm |url-status=dead |archiveurl=https://web.archive.org/web/20100115134400/http://www.2si.com/230_mf_spec.htm |archivedate=2010-01-15 |accessdate=2010-02-17}}{{cite web |date=n.d. |title=Engine Model 230F – 20 |url=http://www.2si.com/230F-20_spec.htm |url-status=dead |archiveurl=https://web.archive.org/web/20100306015218/http://www.2si.com/230F-20_spec.htm |archivedate=2010-03-06 |accessdate=2010-02-17}}
Development
The 230 is a conventional single-cylinder engine that weighs only {{convert|36|lb|kg|0|abbr=on}} in its A20 version. The engine features single capacitor discharge ignition, piston porting, tuned exhaust system, slide venturi-type carburetor, fuel pump, a cast iron cylinder liner, ball, needle and roller bearings throughout. The engine was offered with cog belt drive or a gearbox reduction system. Starting is electric starter or recoil starter.
Variants
;230-A20
:Gasoline aircraft engine, {{convert|20|hp|kW|0|abbr=on}} at 6000 rpm, weight {{convert|36|lb|kg|0|abbr=on}}, out of production.
;230F-20
:Gasoline industrial engine, {{convert|20|hp|kW|0|abbr=on}} at 6000 rpm, weight {{convert|47|lb|kg|0|abbr=on}} without gearbox, still in production.
;230-F22
:Gasoline aircraft engine, {{convert|22|hp|kW|0|abbr=on}} at 6500 rpm, weight {{convert|48|lb|kg|0|abbr=on}}, out of production.Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 69. BAI Communications. {{ISBN|0-9636409-4-1}}
;230 MF
:Diesel/multifuel industrial and marine engine, {{convert|15|hp|kW|0|abbr=on}} at 5700 rpm, still in production.
Specifications (230-A20)
{{pistonspecs|
|type=Single-cylinder, two-stroke aircraft engine
|bore={{convert|69.5|mm|in|2|abbr=on}}
|stroke={{convert|60.0|mm|in|2|abbr=on}}
|displacement=228 cc (13.91 cu in)
|length={{convert|11.7|in|mm|2|abbr=on}}
|diameter=
|width={{convert|14.6|in|mm|2|abbr=on}}
|height={{convert|14.0|in|mm|2|abbr=on}}
|weight={{convert|36|lb|kg|0|abbr=on}}
|valvetrain=piston porting
|supercharger=
|turbocharger=
|fuelsystem=
|fueltype=Minimum 92 octane
|oilsystem=premixed oil and fuel
|coolingsystem=air-cooled
|power={{convert|20|hp|kW|0|abbr=on}} at 6000 rpm
|specpower=
|compression=
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=
|designer=
|reduction_gear=cog belt or optional gearbox
|general_other=
|components_other=
|performance_other=
}}
See also
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