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JohnM wrote:. " I can add a third reason why the points gap can be different. The shaft of the rotating armature is out of parallel or off centre with respect to the body of the magneto. The problem with my own mag was the shaft was out of parallel. This could be seen as a variant of Slick's first reason. But in this case its not the cam ring which is not central but the shaft." This point is EXACTLY why the cam ring housing should not be moved or tilted (an often posted remedy for tweaking timing) to center the cam ring. This is another reason why I do not recommend DIY rebuilds, or installing the Brightspark, which requires disturbance of the cam ring housing and most assuredly means the housing will go back with shaft out of parallel.Slick
JohnM wrote:
. " I can add a third reason why the points gap can be different. The shaft of the rotating armature is out of parallel or off centre with respect to the body of the magneto. The problem with my own mag was the shaft was out of parallel. This could be seen as a variant of Slick's first reason. But in this case its not the cam ring which is not central but the shaft."
This point is EXACTLY why the cam ring housing should not be moved or tilted (an often posted remedy for tweaking timing) to center the cam ring. This is another reason why I do not recommend DIY rebuilds, or installing the Brightspark, which requires disturbance of the cam ring housing and most assuredly means the housing will go back with shaft out of parallel.
Slick
