Tuning a Lucas Distributor.

[billwill]

I'm making a fresh topic here so that the link to this highly useful document is easy to find in future.

http://www.vitessesteve.co.uk/PDF/lucastuning.pdf

It tells you how distributor advance curves REALLY work and how altering the curves is done by changing springs and not by changing weights as many persons erroneously expect.

[billwill]

Documents referenced on the internet from the above document may have moved.

A Lucas Distributor database document can be found at:
http://www.starchak.ca/tech/pdfs/lucas.pdf

Des Hamill's book ?How to Build and Power Tune Distributor-Type Ignition Systems?
can be found on Amazon at:
http://www.amazon.co.uk/Build-Distribut ... 1845841867

The Southern Springs site is still there:
http://www.southernsprings.co.uk/


These links

1. Chichak, Marcel F. ?Lucas Distributor Data? latest release 2002
http://www.telusplanet.net/~chichm/lucas.pdf
2. Chichak, Marcel F. ?Ignition Advance Curve Requirements? 2001 draft
http://members.tripod.com/mini_digest/ignition.htm

5. Chichak, Marcel F. ?Inexpensive Modern Electronic Ignition for A and B Series
Engines? latest release 2001 http://members.tripod.com/~mini_digest/dizzy.htm

can probably be found at:
http://www.starchak.ca/

[ricarbo]

Very interesting. Are there any suppliers of the springs?
regards
Richard

[billwill]

I think Distributor Doctor may sell the springs as well as providing a whole rebuild service.

http://www.distributordoctor.com/