I got a  71bsa a65 and a 71triumph tr6r and the lucas electrics are still
original except the electronic ignitions I put in them 15 years ago.
I am not sure how many watts they put out but mine have been reliable
through all the years.

snipped

 All 12 volt Lucas motorcycle alternators (67 & later) generated 120

watts at 3000

RPM. These can be identified by the black epoxy encapsulation of the stator
windings and 2 stator wires (requires a 4 diode rectifier) coming off the

coil.

1975 Norton 850 MK 3s and 1979 and later Triumphs have 180 watt

alternators which

have brown epoxy encapsulation and 3 wires (requiring a 6 diode

rectifier) exiting

the stator. These alternators were also slightly wider.
Charlie Kuss

In my personal experience with many British cars using Lucas electrics, I
would not
consider ANY Lucas equipment on my aircraft.  Perhaps they have improved from
the bad old days, or possibly the motorcycle stuff is fundamentally
different than
car stuff, but they built unreliable, antique crap in the 60s.  I worked on a
lot of it, and it was junk. The standard joke was "Lucas - Prince of Darkness".
I could go on for hours about sad/funny stories - the bottom line is that I
would
(have) trusted American and Jap alternators in airplanes, but personally
would not
trust a Lucas alternator.  Bosch, probably; Marchal, never.

Bill

 
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