Classic cars forum & vehicle restoration.

[47Jag]

Steve,

[/quote]got about 30 ohms [quote]

That looks good, what I would expect. I know I'm stating the obvious but you have checked the F1/F2 fuse?? I would be looking at the main switch I think. Whatever goes on in there. I'll have a read up online and see if I can be of any further help.

Art

[47Jag]

Steve,

Do you know/can you look at where the 3rd brush is located. If it is close to the brush that goes to the D terminal then we should be earthing the F terminal to get max output. We may have sold you a pup with the previous advice. Have a look and get back.

Art

[stevefizz]

Seemed a bit better but still needed about 2000 rpm before the ing. light went out


just as a test turned the head switch on

i guess because i dont have any headlights connected i got more amps then i should and it blow the regulator 3amp fuse

[stevefizz]

Seemed a bit better but still needed about 2000 rpm before the ing. light went out


just as a test turned the head switch on

i guess because i dont have any headlights connected i got more amps then i should and it blow the regulator 3amp fuse

https://goo.gl/photos/EcDfyYHD33Mo2ocL7

[47Jag]

Steve,

Excellent, we're making progress then Check what voltage you are getting just below 2000rpm. All we need is about 12.5 volts which hopefully would be about 1000-1250rpm. As I said previously the cut-out cut-in may need adjusting. Looking at your picture I can't see an obvious adjustment. You could try closing up the air gap by bending the tang on top of the cut-out armature to about 25 thou. If there is a coil spring pulling on the armature then loosening the hook the spring atttaches to will lower the Cut-in point. If it's a blade spring then bend where the blade rests on.

I know that this isn't the original Dynamo but how do the pulleys compare. Is the original perhaps a smaller diameter?

Art

[stevefizz]

this what its doing


https://youtu.be/SJjX43IaulU

[stevefizz]

Hi

thanks for all the help


to cut a long story short ended up repairing the original dynamo myself

https://drive.google.com/open?id=1ArElNOwpDXZijj72xdCg-24U-KT_tkrBJQ


I'm not sure how long it will last but at least i know what the problem is.
Not sure how or when the wire snapped off

[DM]

At least you got the right date on the photo even though you were slow to post it

[47Jag]

Steve,

I'm glad that you have found the problem. I would suggest you shorten the new wire or at least coat the wire with some sort of adhesive to counter the centrifugal forces.

Art