BrianSteytler wrote: presumably the points plate is spring loaded and by bringing the level towards me (slack wire) the spring is relied upon to push the plate to the full advanced position.
Go out to your bike and take off the points cover and work the advance/retard lever.
You'll see the cable operates a little plunger that moves a cam plate (there is actually a spring in the end of the cable that pushes the plunger back down, when the cable is "slack" and hence the cam plate )
The cam plate just has an ident that allows the points to open/close. By moving the camplate, you move that indent around.
So a "tightwire" advance, like in the picture, pulls the cam plate anti-clockwise when the cable is pulled.
To do the same thing the "slackwire", with a cable take-off on the left of the points, the cable needs to be loose so that the spring pushes the camplate anti-clockwise.
John "Josh" Nashwebmaster@arielownersmcc.co.uk
2009 royal Enfield,1978 t140 bonneville, '67 CJ750, 196-ish Ural M62 outfit, 1960 k750, ''51 kH500, ''49 soon to be Ariel bobber, 47 VH twinport, '44 Ariel WNG, '43 Ariel WNG, ' and piles of rusty scrap ....