This is what I made myself ...




It took yonks with a hacksaw to hack throuygh the ali stock!!! (I think it's 100mm diameter)





And here the flip side...I make the blue plates on my CNC (and it's these blue plates that allow me to mount different winding options)




The diameter of the one I made was about 60mm ...but might want them a little wider (not much)


As it goes I'm in no rush ...as I already have what I have (might be nice to have a couple more though) it was only seeing that coupling that propmted this thread that picqued my interest

but my lathe is out of action (& like I say I sucked at making these anyway)