For those few of you who have been following my journals, I have finally finished rewinding the magneto armature! It makes a nice hot spark for sure!

This armature came out of a Bosch ZEV mag, and when the entire mag is completed, it's going on a 1914 Indian motorcycle. The problem is that the ZEV is a shuttle-wound mag, meaning that the coil spins around will the magnets stay still. This is not the first ZEV I've rebuilt so I can safely say that these mags are difficult to work with!

So I finished rewinding the coil yesterday, and this morning I completely potted the coil with epoxy. It's not as pretty as the professional rewound magnetos armatures, but I find that it performs just as well and is much more durable. Also, I installed a new condenser in the base of armature and potted it as well. Now I just have to finish restoring the rest of the magneto!

Here are the specs of the finished armature:

Primary:

# of turns: 152 (160 originally)

Gauge: 21

Layers: 4

Secondary:

# of turns: approx. 7,200

Gauge: 45

Layers: 25

Length of wire used: approx. 2,600 ft.


Condenser: Wima FKP 1

Value: .22uf

Voltage: 400 VDC