Discussion Overview
The discussion revolves around converting a magneto ignition system to an electronic ignition system for a single-cylinder engine, specifically a 1960 Velocette MAC. Participants explore the challenges of mapping ignition timing and the necessary components for the conversion.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
- Mathematical reasoning
Main Points Raised
- One participant expresses a desire to convert from magneto to electronic ignition due to the high maintenance costs of magnetos and mentions the ability to manufacture a housing for the new mechanism.
- Another participant questions the necessity of advance/retard timing for a single-cylinder engine and suggests that it may not be as beneficial.
- Some participants propose that a cam sensor is needed to dictate firing timing and discuss the importance of varying advance/retard based on engine RPM and throttle position.
- A participant shares a link to a basic circuit design that utilizes mechanical advance/retard without additional inputs.
- Another participant mentions the potential use of a Hall effect sensor for triggering and suggests the need for an RPM sensor and electronic vacuum sensor for optimal results.
- Mapping the ignition curve remains a concern, with one participant noting a specific mapping suggestion of 1 degree per 100 RPM for the bike.
- There is discussion about the stator count of the original magneto and the reliability of auto advance mechanisms in certain models.
Areas of Agreement / Disagreement
Participants express various viewpoints on the necessity and benefits of advance/retard timing for a single-cylinder engine, indicating that multiple competing views remain. The discussion around the specific components and methods for the conversion is ongoing and unresolved.
Contextual Notes
Participants have not reached a consensus on the best approach to mapping the ignition timing or the specific components required for the conversion. There are also unresolved questions regarding the reliability of existing magneto systems and the effectiveness of proposed electronic solutions.
Who May Find This Useful
Individuals interested in motorcycle mechanics, specifically those looking to upgrade ignition systems or those working with vintage motorcycle engines.
