SpottyCat

Equipment limitations, I get you and while I understand your desire to come up with a solution yourself, I'm afraid I don't have any info about what may be a suitable disc. I can't even recall a place that might have a searchable index of that type of thing. If I was after computer stuff and looking for a graphics card that would fit a small case then a site like Skinflint.co.uk would be ideal but I checked and they haven't got anything about car brake discs.

Given the massive cost of kits by comparison, maybe a local engineering firm could still undertake the job I described at a fraction of the amount of a new setup?