https://opensimspark.org/ 2026-04-25T10:13:36+00:00 https://opensimspark.org/ https://opensimspark.org/_media/wiki:dokuwiki.svg text/html 2024-03-01T19:33:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:cdi_theory?rev=1709321589&do=diff CDI theory CDI: Capazitor Discharging Ignition It is the most common technology for two stroke bikes. See also: <https://en.wikipedia.org/wiki/Capacitor_discharge_ignition> The stator-rotor-combination creates a high voltage source for the spark energy and a signal impulse for triggering the ignition point. The CDI modul (also called ECU = electronic control unit) stores the spark energy, until the triggering signal releases the current to the ignition coil. In this coil the voltage gets … text/html 2024-03-01T19:30:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:cdi?rev=1709321440&do=diff CDI CDI: Capazitor Discharging Ignition It is the most common technology for two stroke bikes. See also: <https://en.wikipedia.org/wiki/Capacitor_discharge_ignition> text/html 2024-03-01T19:29:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:discussion?rev=1709321384&do=diff Discussion Discussion topic (german): www.simsonforum.net Please feel free to register and participate in the developing process. Facebook: <https://www.facebook.com/opensimspark> text/html 2024-03-01T19:33:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:diy_cdi?rev=1709321613&do=diff DIY CDI There are different ways to make your own CDI ECU. Here are some shown. 1. Breadboard With a breadboard you can directly solder your circuit. There is no CAD design necessary. But collect your thoughts! The bigger the circuit, the harder it is to avoid connecting mistakes. text/html 2024-03-01T19:33:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:ignition_coil?rev=1709321600&do=diff Ignition Coil To get comparable results it is recommended to use some of the testet ignition coils. Naraku Good experience with long durability was made with „Naraku Racing“ iginition coil. It costs around 15 € / 20 $. Measured values: * text/html 2024-03-01T19:33:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:ignition_curves?rev=1709321624&do=diff Ignition curves To understand two stroke ignition it is important to know some basics about ignition curves. First is matters to know: there is a huge difference between four strokes and two strokes. In an easy way we could say: four strokes need early ignition with rising revs. text/html 2024-03-01T19:27:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:introduction?rev=1709321257&do=diff Introduction General * Name of the project: OpenSimSpark Version 1 analog * rev-limiter: optional, if it makes sense * Mounting scheme: THT * Core-ignition (stator/rotor): Vape (+ maybe PowerDynamo) * analog Version 2 digital * rev-limiter: optional, if it makes sense text/html 2024-03-01T19:35:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:software?rev=1709321723&do=diff Software Eine Liste von Software die für OpenSimSpark benutzt wird. CAD PCB KiCad <https://www.kicad.org/> Geda <http://geda-project.org/> <http://pcb.geda-project.org/> Simulation LTSpice <https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html> Weiterführend <https://en.wikipedia.org/wiki/Comparison_of_EDA_software> TinyCad <https://www.tinycad.net/> Wiki <https://www.dokuwiki.org/dokuwiki> text/html 2024-03-01T19:32:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:st_reference?rev=1709321578&do=diff ST reference ST Microelectronics created an application note AN819 in 1995: <https://www.st.com/resource/en/application_note/cd00003947-capacitive-discharge-ignition-stmicroelectronics.pdf> It is short but very informative with a lot of diagrams. So it is highly recommended for reading when you are interested in CDI technology. ST documents There are a few documents about ignition knowledge published by ST. text/html 2024-03-01T19:25:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:start?rev=1709321105&do=diff The open source ignition solution for two stroke bikes. Learn to understand how ignitions are working and what do you need to make your own cdi. Our first project is an analog CDI für Simson VAPE A70-3 (SZ10). A previous version will give you an idea of what it may look like: text/html 2024-03-01T19:33:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:vape?rev=1709321634&do=diff Vape A Vape stator-rotor-unit will be the bais for the first OpenSimSpark CDI. It's the most common modern ingition system for Simson, so there is a wide range of users of this ignition. There are two types available: A70-3 (SZ10) <http://www.vape.cz/img/Podpora/Rozmer/A-SZ10.pdf> A70-5 (SZ11) text/html 2024-03-01T19:45:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://opensimspark.org/en:vscdi3?rev=1709322351&do=diff VSCDI3 I want to introduce how a CDI can be developed. The following CDI was developed in 2016. But it's just a BETA-Version and has never reached a final status. So please read and enjoy. It is not recommended for recreation. Its project name was VSCDI3.