The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Lucas, Ignition, Charging, Electrical => Topic started by: michael snellin on 17.05. 2013 16:47

Title: Dynamo a10 F and D.
Post by: michael snellin on 17.05. 2013 16:47

Hi, everyone, just wanted to know the two wires/leads from the yoke on the above item does it matter what way round they go ???they seem to be identical with inpregnated oil.
                                                   thanks.

Title: Re: Dynamo a10 F and D.
Post by: morris on 17.05. 2013 17:51

It does. If they are the wrong way round the dynamo won't deliver power

Title: Re: Dynamo a10 F and D.
Post by: metalflake11 on 17.05. 2013 18:04

Where the wires go into the dynamo, there should be f and d stamped next to them. That will tell you which is which.
.                      mf

Title: Re: Dynamo a10 F and D.
Post by: Beezageezauk on 17.05. 2013 20:46

Hi Michael,

I don't mind admitting that electrics are my weak point but after studying the Lucas Workshop instructions one of the diagrams shows the 2 brushes.  One of these brushes is attached to earth.  The other one appears to go to the "D" terminal.

Anyway, that's how I connected my dynamo up last week and it's working fine.

I'm sure somebody on the forum will comment if I'm wrong.

Beezageezauk.

Title: Re: Dynamo a10 F and D.
Post by: Gerry on 30.05. 2013 12:09

Hi Michael, One brush and one end of the field coil go to earth, the other brush goes to the D terminal (Dynamo) and the other end of the field coil goes to the F terminal, these two output wires then match up with the D and F connections on the reg/cutout. Yellow is D and green is F. Hope this helps. Cheers. Gerry