I am currently in the planning stages of creating a really fancy front fork for my bike. For a little background, I want to try to get this custom built Burrows monoblade with disc mount: https://bikefix.co.uk/blade And attach a dynamo hub to it. The thing is that I have so far been only able to find the Schmidt SON XS-M series of single-sided dynamo hubs which seem remotely correct, and all of them are listed as max 20" rims, while I want 700C rims.
My question is this: What would happen if I tried to fit the larger rims to the smaller hub, and why shouldn't I do it?