Hello All:
Check out this guy's post on ebay:
item# 191555427705
He is saying to make your bandsaw wheels out of 18.75" pulley's with a 5/8" belt stretched on to it. I imagine that this already forms a crown but you could modify a necessary. The wheel would be fairly narrow, but from what little I know of bandsaw blade tracking, the blade rides on the crown anyway so there is no need for a wider surface area.
Disclaimer: no affiliation with ebay seller, just admire his solution to large+cheap+balanced+true (probably) wheels.
Anyone already done this approach? Any feedback?
Cheers,
Jim