The König SD 570 is a four-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 of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which re ...
, single ignition
radial 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 ...
designed for
powered paragliders,
powered parachute
A powered parachute, often abbreviated PPC, and also called a motorized parachute or paraplane, is a type of aircraft that consists of a parafoil with a motor and wheels.
The FAA defines a powered parachute as ''a powered aircraft a flexible or ...
s and single place
ultralight trike
An ultralight trike or paratrike is a type of powered hang glider where flight control is by weight-shift control, weight-shift. These light-sport aircraft, aircraft have a fabric Rogallo wing, flex-wing from which is suspended a tricycle fusel ...
s.
[Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page G-6 Cybair Limited Publishing, 2001. ]
The engine was originally designed and produced by
Dieter König of
Berlin
Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...
,
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 ...
. The design was sold to Zanzottera Technologies of
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
and then sold again, along with the rest of Zanzottera's two-stroke ultralight aircraft engine line to Compact Radial Engines of
Surrey, British Columbia
Surrey is a city in British Columbia, Canada. It is located south of the Fraser River on the Canada–United States border. It is a member municipality of the Metro Vancouver regional district and metropolitan area. Mainly a suburban city, Surr ...
,
Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
.
Compact Radial Engines was then in turn acquired by Fiate Aviation Co., Ltd. of
Hefei, Anhui,
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
in August 2017. Fiate Aviation did not advertise the engine as available in 2021.
Development
The SD 570 is an unusual four-cylinder radial engine that is very compact and light weight at only . 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, gas turbine-powered aircraft, and some cars ...
, a single Bing 49 diaphragm-type carburetor and rotary valve induction. Compact Radial Engines offered it without a reduction drive, although when Zanzottera built it an optional 1.75:1 cog belt reduction drive was available. Starting is electric starter only and a
recoil starter is not an option.
[Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 73. BAI Communications. ]
Earlier versions produced at 4200 rpm with a slide-type carburetor and reduction drive. The Compact Radial Engines version is rated at at 4200 rpm.
Time between overhaul is rated as 300 hours.
The SD 570 shares the same bore and stroke as the smaller three-cylinder
König SC 430 radial engine.
Variants
;Zanzottera SD 570
:Four-cylinder, two-stroke, single-ignition, radial aircraft engine producing at 4200 rpm. Equipped with a slide-type carburetor and an optional reduction drive.
;Compact Radial Engines SD 570
:Four-cylinder, two-stroke, single-ignition, radial aircraft engine producing at 4200 rpm. Equipped with a Bing 49 diaphragm-type carburetor and no reduction drive.
Applications
*
AMF Chevvron 2-32
*
MFI BA-12 Sländan
*
Ligeti Stratos
Specifications (CD 570)
See also
References
{{DEFAULTSORT:Konig Sd 570
Compact Radial Engines aircraft engines
Zanzottera aircraft engines
Air-cooled aircraft piston engines
Two-stroke aircraft piston engines
Radial engines