The 2si 808 is a family of in-line three cylinder, liquid-cooled,
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 of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which re ...
, dual ignition,
aircraft engine
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbin ...
s that were designed for
ultralight aircraft
Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and Aircraft flight control system, conventional three-a ...
.
[Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 69. BAI Communications. ]
The basic engine was originally designed and produced by
JLO-Motorenwerke
The ILO-Motorenwerke GmbH 2-stroke motor company in Pinneberg, Germany existed from 1911 to 1990 and was one of the biggest manufacturers of two-stroke engines in Germany. The term ‘ILO’ comes from the constructed language Esperanto and mean ...
of
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
and was later acquired by the
AMW Cuyuna Engine Company
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 ...
of
Beaufort, South Carolina
Beaufort ( , different from that of Beaufort, North Carolina) is a city in Beaufort County, South Carolina, United States, and its county seat. Chartered in 1711, it is the second-oldest city in South Carolina, behind Charleston, South Carolina ...
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 and the 808 is out of production.
[Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page G-2 Cybair Limited Publishing, 2001. ]
Development
The 808 is a conventional three-cylinder engine that weighs in its L95 and L100 aircraft versions. The engine features dual
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, gas turbine-powered aircraft, and some cars ...
, liquid cooling, fuel pump, a cast iron cylinder liner, ball, needle and roller bearings throughout. The aircraft version was offered with an optional gearbox reduction system. Starting is electric starter only.
Variants
;808 L95
:Gasoline aircraft engine with three carburetors, at 7000 rpm, weight , out of production.
;808 L100
:Gasoline aircraft engine with three carburetors, at 7000 rpm, weight , out of production.
Applications
*
Bede BD-5
The Bede BD-5 Micro is a series of small, single-seat homebuilt aircraft created in the late 1960s by US aircraft designer Jim Bede and introduced to the market primarily in kit form by the now-defunct Bede Aircraft, Bede Aircraft Corporation i ...
*
Reflex Lightning Bug
*
Rowley P-40F
Specifications (808 L100 aircraft engine)
See also
References
{{2si
Two-stroke aircraft piston engines
Straight-three engines