Re: Speeditwin Magneto

[George Emmanuel]

Perhaps everyone needs to refocus on the original question. Buccanneer asked the question about the secondary leads going into the bakelite insulators. Here’s my take:—I like it! The secondary leads coming off the coil are soft and don’t put any stress on the coil’s tab (connection). The insulators on the inside have a female receiver similar to that of a conventional distributor. The wires coming from the coil should have ends soldered on them that are expanded similar to what you see on plug wires that fit into the distributor but in a miniature version. The system is designed such that the plug (coil) end when pushed into the bakelite receiver has a stress fit, and it is good and solid. When you remove that secondary wire from the insulator you should see a screw down inside. That screw is what holds the spark plug wire firmly. When installing new plug wires, I solder them, insert them into the underside of the bakelite fitting and tighten the screw. They are then held firmly in place. The solder helps to keep the wire firm when the screw is tightened.

The reason I like the design is because you can change spark plug wires without damaging the coil. If you are going to use the described grommet, you’ll have to solder the wires to the coil and risk damaging the secondary connection, plus any strain put on the plug wires puts strain on that valuable, original coil.

George