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NutmegCT
07-09-2012, 04:26 PM
This applies to many LBCs, so I'm posting it here. Can't find a way to attach a PDF file.

Very interesting old Lucas instruction manual, part of a series. Note the reference to "our coils are made for positive earth systems" - and the rationale for doing so.

Lucas Ignition Manual (https://mgaguru.com/mgtech/books/lts_otcc/Session3_CoilIgnition.pdf)

You can find all ten manuals at:

Lucas Technical Manuals (https://mgaguru.com/mgtech/books/lts_otcc.htm)

Tom

aeronca65t
07-10-2012, 05:39 AM
Nice!

The explaination for positive earth was interesting.
I'm not sure how the 10% efficiency number was deduced, but the direction of material transfer from cap to rotor makes sense.

I know this has been mentioned here before, but HERE (https://www.1978mgmidget.com/manuals_and_booklets.html) are some other British technical manuals online. The creator of this website is a neighbour of mine.