I was thinking about how other magneto’s that have adjustable timing
advance "worked", and remembered that I had an old tractor magneto
off a Farmall F-12 in storage the last 36 years, so I dug it out and
it’s pretty "high tech" for the 1930’s in how it works.
The Farmall mag has a drum that the points mount to, that
rotates inside a bore. The drum’s rotation is limited via a pin in the bore
and a slot in slot in the drum. The cover engages the drum to advance or
retard the timing.
I don’t see a way to adapt the same idea to my magneto. I still think there must
be a way to rig up a movable contact points plate with lever,
but it’s not coming to me.
The Farmall mag is cleverly designed so the coil wire that attaches to the
points does not move or twist around. That would just be one
consideration.
Any magneto engineers "out there"?
Attachments:
Prepare to be boarded!