Just a bit of trivia for those who may be interested.
The first Lucas regulators were introduced in 1937 being the MCR, not to be confused with the 1938 onward MCR1.
This one is off a 1938 M24 Gold Star and I believe it to be the original fitment.
There are some differences from the later version, the armatures are screwed together, not riveted, and are very different.
The tension springs are coil in the adjusters on the rear, changed to leaf springs later.
This one works as it should and will be going back onto the bike.
I have overhauled the MO1 magneto and rebuilt the generator as per 1938.
