Lynx I dynamo
My brothers took the Lynx to Normandy last year and had a lot of fun. Right at the end of the week the battery went flat and following a lot of help from fellow enthusiasts, the dynamo was declared u/s.
I took it to my local auto electricians and they tell me that the armature is u/s and needs a rewind. £300 was quoted.
In trying to avoid this expense I dug out all our spare dynamos. One is clearly marked 6v (the Lynx runs on 12 v).
Another has no markings at all and the third looks as though it is a three brush device. It is marked FordQ-5.
My question is can anybody tell me how to tell the difference between a 6v device and a 12v one?
Having accidentally reverse polarised my dynamo on my 1948 Riley once, I wondered why the red light would not go out. I measured the voltage at the output of the dynamo and it was 60v in the wrong direction. Problem solved. However this prompts me to ask what is the difference between 6v and 12v dynamos? The only suggestion I can come up with is that the armature of the 6v one presumably has thicker windings as it is required to supply twice the current (at least in theory).
Does this mean that I can:
a) use a 6v dynamo in a 12v set up, or
b) use the armature from a 6v dynamo in a 12v dynamo?
Kind regards,
Alastair
p.s. what is the tin can seen in the photo below?
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