direct drive main rotor gearless motors

[ron_van_sommeren]

Several homebuilt do-it-yourself main rotor direct drive motors.

Made from a floppy disk drive motor
http://www.rcgroups.com/forums/showthread.php?s=&threadid=197862

http://foto.modelbouwforum.nl/uploads/afb1233.jpg (http://www.rcgroups.com/forums/showthread.php?s=&threadid=197862)

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 reference and subscribe to it:
http://www.rcgroups.com/forums/showthread.php?t=240993

main and tail rotor DD
http://www.rcgroups.com/forums/showthread.php?t=492675&page=23&pp=15

A Dutch development
http://www.rcgroups.com/forums/showthread.php?p=5530768#post5530768
MOre links and ideas by 'Sietse'in this Dutch thread:
http://www.modelbouwforum.nl/phpBB2/viewtopic.php?t=40301&highlight=
Video
http://media.putfile.com/DDFP-picolo-12N16P

http://foto.modelbouwforum.nl/albums/userpics/10142/prntscrn1.3.jpg



A second direct drive motor, from two 5.25" floppy disk drives. Polish and German text:
http://alexrc.com/voytek_pl.html

Christian Lucas' (the 'L' in 'LRK') direct drive helicopter, powered by a hydrogen fuel cell:
http://www.rcgroups.com/forums/showthread.php?postid=1030688#post1030688

More do-it-yourself direct drive helicoptermotors
http://www.powercroco.de (in German & Englisch).

http://www.powercroco.de/LMH120/LMH3.jpg http://www.powercroco.de/crocohelidirekt/heli5.jpg

Dieter Melber
http://www.torquemax.de/AndereMelber.htm

http://www.torquemax.de/images/Dieter_Melber01.jpg http://www.torquemax.de/images/Dieter_Melber10.jpg (http://www.torquemax.de/AndereMelber.htm)

Dieter is also working on a ferrite based stator:
http://www.powercroco.de/24N32P7210.html

http://www.powercroco.de/24N32P7210/IMG_2.jpg http://www.powercroco.de/24N32P7210/IMG_1.jpg


Vriendelijke groeten ;) Ron
• diy motor building tips & tricks (http://www.rcgroups.com/forums/showthread.php?t=240993)
• diy brushless motor discussion group (http://www.yahoogroups.com/group/lrk-torquemax)
• Drive Calculator (http://www.yahoogroups.com/group/D-calc/) download & discussion group
• int. E fly-in & diy outrunner meet (http://home.hetnet.nl/~ronvans/), Aug.26 2007, Nijmegen, the Netherlands

[WillJames]

:smokin: :smokin: :smokin: :smokin: :smokin:

[ron_van_sommeren]

Video direct drive T-Rex
http://media.putfile.com/Direct-Drive-T-Rex-SVD

Pics:
http://www.modelbouwforum.nl/phpBB2/viewtopic.php?t=40301&postdays=0&postorder=asc&&start=225

[mudbogger2]

Very cool stuff.