Thanks both for your comments, yes they are my work.
I made the pattern to cast a drum for a 190 mm brake, job done, my mate suggested putting a clock in it, and things went from there.
I got the Goldstar clock of E-Bay, it's printed on an old 45 Record.
The Al-Fin sprocket/drum is pseudo, I made the muff and modified a standard drum.
The small piece of concrete on the plinth of the connecting rod clock, came from the members banking, Brooklands, birth place of the naming of the Goldstar.
It's not that I haven't got plenty of other things to be getting on with, but it was quite relaxing, being able to make it up as you went along, and being spot on size was of no consequence.