First of all my apologies for writing in English, I cannot read or write Russian.
Broken or old cd-rom/dvd/tapestreamer motors can be rewound (brushless) to start a new life in powering indoor- and park-flyers as well as small helicopters (e.g. Ikarus Piccolo). They make for light, durable and powerful motors. I compiled cd-rom conversion discussions/homepages/magnet sources/tricks in this two page thread. The messages there are in English, not Danish:
Some pictures from http://homepages.enterprise.net/jayjay/cdrom_motors.htm
Met vriendelijke groet Ron van Sommeren
homebuilding brushless e-motors discussiongroup
int. E fly-in & e-motor builders meeting June 27th, Nijmegen, the Netherlands