I'd love to help. We have two Powerspec Pro's (we are giving the Makerbot to another division, since it's a piece of junk). If you need any parts done, let me know. You'd just have to cover shipping if you're international. I can use company materials.
The pulley system is what I was thinking, too. And just hook it up to a alternator that will be near the turbine. The ratio will be interesting to play with. It all depends on the alternator (in my mind).
What new blade designs?
You can email me if you want, at [email protected]