As you can probably tell from the title of this blog post, I have decided to take a shot at making a Great Wheel myself. I am going to base its construction on the well-known Luttrell Psalter image which will result in a fairly big wheel, standing on fairly long legs, with an upright holder for both the spindle and the wheel.
In contrast to later wheels that are still existing, the medieval Great Wheels never seem to have angled uprights holding the wheel itself or the spindle. There will also be no threaded tensioners; I have yet to decide whether to add a different tensioning mechanism or to just tension by changing drive band length.
The whole thing, in any case, should be
a) done so it can be taken apart easily for transport or storage;
b) not use modern materials or concepts;
c) match the Luttrell wheel as well as possible;
d) function as a proper productive spinning tool.
So the usual, the usual. Apart from the tensioning issue, however, I think I have figured out most of the details - putting together of the parts will be done by using wedges, similar to how my table substruction is held together; the legs will be conical and thus should have enough friction in their sockets to stay in there when the wheel is carried around; the largest single bit will be the wheel itself, and that is non-debatable due to construction reasons.
I am very much looking forward to this!