| König SD 570 | |
|---|---|
| Type | Two-stroke aircraft engine |
| National origin | Canada |
| Manufacturer | Compact Radial Engines |
The König SD 570 is a four-cylinder, two-stroke, single ignition radial aircraft engine designed for powered paragliders, powered parachutes and single place ultralight trikes.[1][2]
The engine was originally designed and produced by Dieter König of Berlin, Germany. The design was sold to Zanzottera Technologies of Italy 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, Canada.[1][2]
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The SD 570 is an unusual four-cylinder radial engine that is very compact and light weight at only 19 kg (42 lb). The engine features single capacitor discharge ignition, a single Bing 49 diaphragm-type carburetor and rotary valve induction. It is currently offered 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.[1][2][3]
Earlier versions produced 28 hp (21 kW) at 4200 rpm with a slide-type carburetor and reduction drive. The current version is rated at 24 hp (18 kW) at 4200 rpm. Time between overhaul is rated as 300 hours.[1][2][3]
The SC 430 shares the same bore and stroke as the smaller three-cylinder König SC 430 radial engine.[2][3]
Data from Compact Radial Engines[2]
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