These sites is for flyers of Radio Controlled model aircraft wanting to find out about successful Electric powered RC modelling.
Fly Electric-- Radio Controlled Model Aircraft
"On this site I showcase big electric planes, have loads of free plans for smaller ones, cover many interesting contruction topics and provide circuit diagrams and advice for lithium batteries." - David Theunissen
Electric Model Aircraft Circuit Diagrams
Most of these have adequate descriptions on how to produce a working unit. Of course I take no responsibility for the accuracy of the designs but have used them for several years with no problems.
Brushless Free-Flight Timer - The page describes how to convert a cheap commercial speed controller into a light, easy to use, brushless free flight timer. It is also a good introduction to brushless ESC's and you could even build your own.