Thanks:- Nick/Dean/Jack and Dave
Dean the indexer is just a simplified dividing head but a lot easyer to use, some Guys have made their own.
Hacked the base out today from some ally jig plate.

Then squared it up and mill around the edge with a 1/4" ball slot drill.

The roller bearing arrived to day from Hong Cong £6.50 for 10 including postage:- don't know how they do it

So that I can fit in the crank pin they are only 7mm dia by 2.5 thick I was planning to assy 2 to the shaft but ended up assembling 3
Her's the assembly so far.

IIt runs nice and free, but with a slight wobble I intended to drill the fly wheel for the bearing with the next size down letter drill so that the bearing were a tight fit but when It came to do the job I forgot and ended up sticking a 7mm

drill through it resulting in a slack fit from the bearing so I had to glue them in place, that where the wobble came from I think.
And I'm not quite sure about the proportions of the base I may hack a bit more off it,
Have fun
Stew