Dynamo no go

[John Mason]

Have you tried putting the terminal to a battery and see if the Dynamo spins like a motor. It should spin reasonably fast on a fully charged battery. If it does'nt look at how you have connected the fields to the brushes. I stripped my Dynamo down some years ago and put it back together wrongly and had symptoms like yours. A club member who was more knowledgeable on electriclkery than me sorted it out and apparently I had connected the inner wiring to the brushes wrongly.

John Mason