The thing about a medieval-style Great Wheel? It's really Great, as in Large. Looking at images, the wheel appears to be really huge, compared to the spinners. And when one thinks about it, that is sort of understandable - after all, the aim is to get a lot of twist quickly, and there are no gears involved. So the size difference between the wheel and the disc on the spindle (often called whorl, but I find that confusing) has to be as large as possible.
When I built my reconstruction, I was thus looking for a size that would compare to the illustrations we have, and of course with a look at its intended use - demonstrations. Which meant it also had to come apart easily, and the single pieces had to fit into the car.
Which they do. The wheel itself has its own special spot right under the roof, where it's built to fit perfectly:
The board end in the foreground belongs to the bottom (main) board. The rest is one box with the small pieces (like the wedges, drive band, and spindles) and one pack with legs and the holders for spindle and wheel.
So now I just have to add the rest of the equipment, and we're ready to roll!
(Ingelheim. Sunday. See me there if you can, and say hello!)