14-09-2018, 01:00 PM
Hello James
The spark is generated when the poles just separate and the points open at the same time. The exact timing is a little more complicated than this but that is why rotating in the other direction does not work.
This can be re-timed by re-positioning the cam with the rotor and rotor arm in the correct positions.
However, the points are only supposed to run in one direction. In the correct direction the points will effectively open themselves whereas in the wrong direction they will try to dig into the cam and result in excessive wear. The points housing has to be of the correct rotation.
Some magnetos with an extended pole (for better spark in advanced and retarded position) cannot be reversed.
I can photo my BLIC when I get home if required.
Adrian.
The spark is generated when the poles just separate and the points open at the same time. The exact timing is a little more complicated than this but that is why rotating in the other direction does not work.
This can be re-timed by re-positioning the cam with the rotor and rotor arm in the correct positions.
However, the points are only supposed to run in one direction. In the correct direction the points will effectively open themselves whereas in the wrong direction they will try to dig into the cam and result in excessive wear. The points housing has to be of the correct rotation.
Some magnetos with an extended pole (for better spark in advanced and retarded position) cannot be reversed.
I can photo my BLIC when I get home if required.
Adrian.