Turns out the guys in the UK making longboard kits have got a website up for ordering parts:
Their new website: http://www.aliendrivesystems.com/alien-power-systems-motorsesc.html
The original Endless sphere blog thread: http://endless-sphere.com/forums/viewtopic.php?f=35&t=47176&start=175
My wheel gear came from them. In the future I’ll CNC them here. I was in a hurry. For the rest I buy parts from RS online in Australia.
I also created a blog to document my progress on my electric longboard, it would be nice to have some feedback/help. — http://www.afchacks.wordpress.com