Marty scored some rally good Recaro seats and mentioned sewing.
Funnily I had the industrial sewing machine instide on the dining table, and have started finally playing with recovering my RS wheel. I wasnt going to post until its complete, but we are half way so far.
It was purchased averagely cheap (my own word), because it has more cracks in it than Norlane:
Plus a few chunks missing, but ideal for recovering.
The rubber had come away internally from the steel ring, so I sliced it open and pumped in some maring Sikaflex. I tested the Sika to see how well it would bond to metal, happily every tool on the workbench that got inadvertently covered, stuck down well the next morning.
Packing tape seemed a good idea to hold it shut while drying, except it needs air to cure.... eejit.
Its now drying with cable ties instead.
The cut in the top centre is for the leather join, which will be in a grey contrast stitch.
My sewing machine is setup to do sail sized stuff, and while it sews through thick material ok, it's a dog to sew slowly on.
So for now, the leather is cut, sewn to form a loop, and stitched both sides.
This is the pattern i'm planning to use, just simple, not the style with skipped every second:

Marty is right about the youtubes, ive watched a few, probably to my detriment. I cant really work to instructions, and sew on the fly, in my head. If you are a pattern making guy, search for this vid from Adam Smith. Total craftmanship, but it was about hours to do. This is the best example I have found on how to do an RS wheel