Re: clamshell sprocket adapters that will fit on smaller type hubs?
I would write Pat or Pirate anyway, and just ask. Ask Jim or Pat if they, or somebody they know and trust, would be willing to do a one-off. You'll need, at the very least, an extremely accurate caliper to measure the diameter of your hub so they can machine the adapter correctly. Oh, - and don't expect a one-off to be cheap, from them it'll be GOOD though. But, yeah, I would ask. If they say no, you aren't out anything and can go on looking or forming other ideas.
"There is nothing wrong with wanting a motorbike that is an extension of your personal taste and fashion sense; if you must ride somewhere, I say do it with style