Great minds Rog
Just popped into MWS and picked up a R/H brass spinner, by a lucky twist of fate MWS are only 20 minutes drive from my house, I chose a R/H spinner to fox those pesky opportunistic theives who will hopefully follow the arrow and just tighten the thing down into the captive nut
Visiting in person also gave me a chance to confirm the base metal with the team at MWS, turns out it's a brass and lead alloy so the brass spinners are just the base metal polished up. We're now not going with my hub idea, instead we're going to cut an 8tpi L/H thread on some brass bar using a lathe and centre dill/tap it for the central bolt, thanks for confirming the thread we need to cut for the captive nut end too
With a L/H 8tpi thread cut on the bass bar stock we can wind the finished assembly into the spinner then tig braze it to the inner lip of the spinner, this will ensure minimal heat transfer to any visible polished outer faces, and with the outer well filled with water we can create the perfect heat sink to further minimise heat transfer.
I'll update this post with photos on Saturday when I expect it should be all completed and on the car.
