2si 460

{{Infobox aircraft begin

| name = 2si 460

| image =

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}}{{Infobox aircraft engine

| type = Two-stroke aircraft engine

| manufacturer = 2si

| national origin = United States

| first run =

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| produced =

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| developed from =

| variants with their own articles =

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The 2si 460 is a family of in-line twin-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 ILO-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 460 is still in production as a Diesel/multifuel or gasoline industrial, marine and sport vehicle 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 |access-date=2010-02-16}}{{cite web |date=n.d. |title=Diesel / Multi-fuel Engine - Model 460 MF - Marine and Industrial Applications |url=http://www.2si.com/460_mf_spec.htm |url-status=dead |archiveurl=https://web.archive.org/web/20100115014642/http://www.2si.com/460_mf_spec.htm |archivedate=2010-01-15 |access-date=2010-02-18}}{{cite web |date=n.d. |title=Engine Models 460F-35 and 460FE-35 Industrial Configuration |url=http://www.2si.com/460f_460-FE35_ind.htm |url-status=dead |archiveurl=https://web.archive.org/web/20100306015231/http://www.2si.com/460f_460-FE35_ind.htm |archivedate=2010-03-06 |access-date=2010-02-18}}{{cite web |date=n.d. |title=460L-50 Engine & JP-2 Jet Pump Package |url=http://www.2si.com/460l-50_JP-2_spec.htm |url-status=dead |archive-url=https://web.archive.org/web/20090901105434/http://www.2si.com/460l-50_JP-2_spec.htm |archive-date=2009-09-01 |access-date=2010-02-18}}{{cite web |date=n.d. |title=MARINE ENGINE MODEL 460L-50 |url=http://www.2si.com/marine_engine_mode_460lspec.htm |url-status=dead |archive-url=https://archive.today/20130116002139/http://www.2si.com/marine_engine_mode_460lspec.htm |archive-date=2013-01-16 |access-date=2010-02-18}}{{cite web |date=n.d. |title=Engine Models 460F-35 and 460FE-35 Sport Configuration |url=http://www.2si.com/460f_460FE_35%20Sport_%20spec.htm |url-status=dead |archive-url=https://archive.today/20130116010832/http://www.2si.com/460f_460FE_35%20Sport_%20spec.htm |archive-date=2013-01-16 |access-date=2010-02-18}}

Development

The 460 is a conventional twin-cylinder engine that weighs {{convert|59|lb|kg|0|abbr=on}} in its F35 aircraft version. The engine features single capacitor discharge ignition, piston porting, tuned exhaust system, one or two slide venturi-type carburetors, fuel pump, a cast iron cylinder liner, ball, needle and roller bearings throughout. The aircraft version was offered with cog belt drive or a gearbox reduction system. Starting is electric starter or recoil starter.

Variants

;460-F35

:Gasoline aircraft engine, single carburetor, {{convert|35|hp|kW|0|abbr=on}} at 6000 rpm, weight {{convert|59|lb|kg|0|abbr=on}} (discontinued).

;460-F40

:Gasoline aircraft engine, single carburetor, {{convert|40|hp|kW|0|abbr=on}} at 6500 rpm, weight {{convert|70|lb|kg|0|abbr=on}} (discontinued).Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 69. BAI Communications. {{ISBN|0-9636409-4-1}}

;460-F45

:Gasoline aircraft engine, dual carburetors, {{convert|45|hp|kW|0|abbr=on}} at 6750 rpm, weight {{convert|70|lb|kg|0|abbr=on}} (discontinued).

;460 MF

:Diesel/multi-fuel engine for marine and industrial applications, {{convert|37|hp|kW|0|abbr=on}} at 6000 rpm, weight {{convert|78.5|lb|kg|0|abbr=on}} without gearbox.

;460F-35

:Gasoline industrial engine and sport vehicle engine for auto racing, kart and All-terrain vehicle applications, single carburetor, {{convert|35|hp|kW|0|abbr=on}} at 6000 rpm, basic weight {{convert|55|lb|kg|0|abbr=on}}.

;460FE-35

:Gasoline industrial engine and sport vehicle engine for auto racing, kart and ATV applications with electric start, single carburetor, {{convert|35|hp|kW|0|abbr=on}} at 6000 rpm, basic weight {{convert|55|lb|kg|0|abbr=on}}.

;460L-50

:Gasoline marine engine powering a jet pump, {{convert|50|hp|kW|0|abbr=on}} at 6750 rpm.

Applications

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Specifications (460-F35 aircraft engine)

{{pistonspecs|

|ref = Cliche

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

|bore = {{convert|69.5|mm|in|2|abbr=on}}

|stroke = {{convert|60.0|mm|in|2|abbr=on}}

|displacement = 455 cc (27.77 cu in)

|length = {{convert|14.5|in|mm|2|abbr=on}}

|diameter =

|width = {{convert|16.0|in|mm|2|abbr=on}}

|height = {{convert|16.0|in|mm|2|abbr=on}}

|weight = {{convert|59|lb|kg|0|abbr=on}}

|valvetrain = piston porting

|supercharger =

|turbocharger =

|fuelsystem =

|fueltype = Minimum 92 octane

|oilsystem = premixed oil and fuel

|coolingsystem = fan cooled

|power = {{convert|35|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 =

}}

References

Category:Air-cooled aircraft piston engines

Category:Two-stroke aircraft piston engines