Clerget 9B - Ignition Animation (HD)

Clerget Drawings
Engine Animation
Gears Animation
Ignition Animation Ignition Animation

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Clerget Assembly

Assembly Movie

Ignition Timing

The gear ratio for the Main drive Gear and Magneto gears is two and a quarter. The contact breakers give 2 sparks per revolution and run at two and a quarter times the engine speed, each giving nine sparks every two revolutions of the engine. The firing order therefore is 1, 3, 5, 7, 0, 2, 4, 6, 8.

Looking from the rear, the right hand Magneto/contact breaker supplies the front set of spark plugs and the left hand one the rear spark plugs.

More details on Magneto Ignition