The 2si 230 is a family of single-cylinder,
two-stroke
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of ...
, 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. ]
The basic engine was originally designed and produced by
JLO-Motorenwerke of
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
and was later acquired by the
AMW Cuyuna Engine Company of
Beaufort, South Carolina
Beaufort ( , a different pronunciation from that used by the city with the same name in North Carolina) is a city in and the county seat of Beaufort County, South Carolina, United States. Chartered in 1711, it is the second-oldest city in South ...
and marketed under the ''Cuyuna'' brand name. Later the engine was marketed by Cuyuna under the
Two Stroke International
2si was an American engine manufacturer located in Beaufort, South Carolina. The company was a wholly owned subsidiary of the AMW Cuyuna Engine Company, formerly known as the ''Cuyuna Development Company''.Cliche, Andre: ''Ultralight Aircraft S ...
(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.
Development
The 230 is a conventional single-cylinder engine that weighs only in its A20 version. The engine features single
capacitor discharge ignition
Capacitor discharge ignition (CDI) or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, turbine-powered aircraft, and some cars. It ...
, 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
Rope start (also called pull start or ''rewind start'') is a method of starting an internal combustion engine, usually on small machines, such as lawn mowers, chainsaws, ultralight aircraft, small outboard motors and portable engine-generators. ...
.
Variants
;230-A20
:Gasoline aircraft engine, at 6000 rpm, weight , out of production.
;230F-20
:Gasoline industrial engine, at 6000 rpm, weight without gearbox, still in production.
;230-F22
:Gasoline aircraft engine, at 6500 rpm, weight , out of production.
[Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 69. BAI Communications. ]
;230 MF
:Diesel/multifuel industrial and marine engine, at 5700 rpm, still in production.
Specifications (230-A20)
See also
References
{{2si
Air-cooled aircraft piston engines
Two-stroke aircraft piston engines