Ralph Okon moved his excellent do-it-yourself brushless motor site to
www.powercroco.de
No lets all mail him (info@powercroco.de) to put the English version online again.
Do-it-yourself motor
homepages, manuals/tutorials, checks and tests in the first message of this motor builders tips and tricks thread. The checks and tests may save you from frying your controller or motor. Thread is active, bookmark it for future refence and subscribe to it:
http://www.rcgroups.com/forums/showthread.php?t=240993