Thank again Florence, Just had a play centred the wheel up had a look in the Haynes I think its basically a bush about 12 to 14mm long with a disc attached to it about 40 odd mm dia that covers the bearing seal, lining the sprockets up the wheel measures centre Most brob available through Mr Silvers, Just want to get the thing on its wheels , Got a problem with front wheel the speedo gear is missing not sure if these are available. Not many being broke on flea bay and not sure what other models used the drum brake.
Got a parts book on the way find them better than manuals at times. Should be a nice little fun bike for local. Maybe won't seem as quick as the one I rode in the 70's.
One last thing anyone used a colortune on there 750 found my old one and was going to give it a try.