I buy the hubs from my supplier.
Ok your answer is more than irritating. I am trying to contain myself so as not to flame your post and get banned. You claim to be a builder and supplier. Its right there in your tag line by your name. But when I directly ask you for a link to a hub to buy. You fail on all accounts. Poor way to be in business. (IMHO) Horrible way to answer on a forum that is all about how to build motorized bicycles and where are suppliers (also IMHO)
I will now un follow your build here. Its pointless now.
I'm surprise the hose clamp would actually hold the jackshaft in place. Looks so good...