This is a hub motor I found on Alibaba and finally got it in just recently. I build a test fixture for it and I just need to wire up the connector. It is 36V 250 Watts but is supposed to have a low free spinning current. It came with hall effect sensors so I am going to trying to get it working with them first and then might go back and work on the back-emf routine. It was fairly cheap but shipping was killer for just one sample. Hopefully get the cost down with higher volume.