The Bendix-Scintilla lineage eventually evolved into the S-20 and S-1200 series used on modern Lycoming and Continental engines. However, the original "brass tag" Scintillas remain the gold standard for restorers of WWI and 1920s-era aircraft. They are a testament to an era where "built to last" wasn't a slogan, but a flight-safety requirement.
Whether you are restoring a vintage aircraft engine like a Pratt & Whitney Wasp, maintaining a classic tractor, or keeping an antique power plant running, understanding how to service a Scintilla magneto is critical for operational safety and engine reliability. This manual provides a comprehensive technical overview of Scintilla magneto design, periodic maintenance protocols, and advanced troubleshooting techniques. 1. Internal Operating Principles
Why You Need an Original or High-Quality Reproduction Manual
1. P-lead grounded permanently.2. Breaker points oxidized or oily.3. Defective coil (internal short). scintilla magneto manual
This feature serves as a deep dive into the operation, maintenance, and "lost art" of the Scintilla aircraft magneto. 1. The Design Philosophy: Rotating Magnets
The most common "manual" task is setting the point gap. This dictates the timing of the spark.
Detailed diagrams and part numbers for replacing worn components. 3. Maintenance and Care (Based on Scintilla Guidelines) Whether you are restoring a vintage aircraft engine
A comprehensive Scintilla manual covers several crucial areas to keep these precision instruments running. Typical manuals include (operation) and Service Parts Lists . Typical Manual Sections:
Opening the points instantly breaks the primary circuit. The capacitor absorbs the inductive kick to prevent arcing across the points. This causes the primary magnetic field to collapse instantly.
A key distinction in Scintilla literature is the depth of maintenance required: Internal Operating Principles Why You Need an Original
The single best resource is , edited by E. Molloy and E.W. Knott. Other specific manuals include the "Handbook of instructions, with parts catalog, of Scintilla type SC double magnetos" from 1932, and Bendix-Scintilla Type DFN manuals that cover theory, service, and repair.
Operating or servicing a magneto requires strict adherence to electrical safety, particularly regarding the circuit.
: Instructions for mounting the magneto to an engine and setting internal and external timing.
Grab your multimeter and follow this flow:
Scintilla magnetos utilize a or inductor-type design, making them smaller and lighter than older horseshoe-magnet models.