Ariel Owners Motorcycle Club

Its been quite a few years since I messed with a magneto and I simply cannot remember how the rotor which carries the contact breaker on an Mo1 magneto detaches.
I have removed the points and both hex head screws, but rotor does not release and I am shy of using any effort on it not knowing how it locates on the mags spindle.
I've searcched and looked in old handbooks but cannot find the info I need. Its as if, its so simple and obvious, nobody ever mentions it.

If you use Google and search for Lucas MO1 there are several videos showing the magneto being stripped down. I've no desire to strip a magneto but it all looks pretty straightforward.

I googled for this last night. None of the ones I saw dealt with this triffling detali !
They all focused on "how to change the condenser" or "how to fix the bearings" no mention of "how to get in there".
All I want to do is change the end housing of the mag to change it from Tight wire advance to slack wire advance.

The magneto shaft has a hollow taper and a cut-out notch. The points assembly locates with the notch and is pulled in with the central screw that connects with the condenser.

I have rebuilt a number of M01 mags . . . But I had to go and look (old age) .

Probably stuck with old oil/grease/dirt mix !

Bob.

Thanks.
I found what I needed this morning.
Copy of the relevant Lucas manual.
It just pulls off, they said. Its been on there a few years and did not feel llike that. But armed with the knowledge and a bit of heat and good pull, and off it came.