• Howdy! we're looking for donations to finish custom knowledgebase software for this forum.
    Please see: Funding drive thread

Search results

Date Relevance Most replies

  1. ron van sommeren

    Winding a large paraglider motor, with video of 1st flight

    By Christo van der Merwe (a.k.a. Skylar) DIY paraglider motor 160x25mm stator (2016) Weight: 4kg Prop: 1.2m, RPM: 2300, Thrust: 43kg Battery: 12S LiPo, Current: 140A, Power: 6580W See...
  2. ron van sommeren

    LeoMotion motors

    http://www.leomotion.com L9038-130 L9025-130
  3. ron van sommeren

    NeuMotors 70→150cm³ eq., and 1000→2000W coaxial

    See NeuMotors discussion thread - RC Groups http://www.rcgroups.com/forums/showthread.php?t=2734532 & http://www.neumotors.com
  4. ron van sommeren

    Plettenberg Nova motors and MST controllers: 15, 30, 150kW

    Plettenberg Nova series: 15, 30 and 150kW www.plettenberg-motoren.net/index.php/en/motor-serias-nova Plettenberg MST controllers: 30/40kW and 120/160kW www.plettenberg-motoren.net/index.php/en/motor-control
  5. ron van sommeren

    preventing sparking when connecting battery and controller

    Several methods compiled in this thread: http://www.flyinggiants.com/forums/showthread.php?t=42035#post1485126
  6. ron van sommeren

    70mm monster Scorpion in the works

    . 70mm diameter and 50m long stator: translate...www.powercroco.de -> motors -> Scorpion kits customized -> 7050 big block Picture: 7050 and 4535 motor
  7. ron van sommeren

    17 & 23s 150/200A controllers

    17s and 23s controllers www.fightercatracing.com Discussion www.rcgroups.com/forums/showthread.php?t=1449934
  8. ron van sommeren

    E-speedrecord videos: helicopter 250km/h, plane 440km/h

    Both motors built by Ralp Okon, http://www.powercroco.de Videos in post #88. Ignore third video, very old school: http://www.rcgroups.com/forums/showthread.php?t=990566&page=9&pp=10#post18417490 . .
  9. ron van sommeren

    lovely 5, 10, 15, 20 & 30kW motors

    Lovely design, keyed magnets, inrunners: http://www.jobymotors.com/ The motors are a spin-off from a flying windmill development: http://www.makanipower.com/ For high detail pictures see this discussion in the RCG 'Giant Scale' subforum: http://www.rcgroups.com/forums/showthread.php?t=1431347...
  10. ron van sommeren

    [RCG] How to Convert an Alternator to A Motor

    See http://www.rcgroups.com/forums/showthread.php?t=905411 Prettig weekend ;) Ron • brushless motor building tips & tricks • diy brushless motor discussion • • Drive Calculator discussion • int. electric fly-in, Nijmegen/Netherlands •
  11. ron van sommeren

    FEMM simulations for motor design

    Motor calculations using FEMM (http://www.femm.info/) http://tech.groups.yahoo.com/group/Femm/messages/1687?xm=1&m=p&tidx=1 Vriendelijke groeten ;) Ron • brushless motor building tips & tricks • diy brushless motor discussion group • Drive Calculator download & discussion...
  12. ron van sommeren

    RC controllers max. rpm limits

    Controller maximum rpm's are specified for 2-magnetpole motors.The maximum motor rpm a controller can handle, from a computing point of view, depends on the number of magnetpoles. Double the number of magnetpoles and the controller can handle the motor up to half the rpm. E.g a 6magnetpole motor...
  13. ron van sommeren

    de-rating RC motors and controllers

    Note that Lucien Miller wrote this from an RC plane/helicopter point of view, no start-up torque, starting at 'for everyone else': http://www.rcgroups.com/forums/showthread.php?p=11476940#post11476940 Vriendelijke groeten ;) Ron • brushless motor building tips & tricks • diy...
  14. ron van sommeren

    Building 65mm stator motors

    Several links to projects: http://www.rcgroups.com/forums/showthread.php?t=1091039 Vriendelijke groeten ;) Ron • brushless motor building tips & tricks • diy brushless motor discussion group • Drive Calculator download & discussion group • int. electric fly-in...
  15. ron van sommeren

    30cm diameter outrunner

    Here is a link to a video of the motor/generator running, 36 slots, 42 poles ( -> 3xLRK winding diagram), outside diameter is 30cm (about 1 foot): http://www.youtube.com/watch?v=NES_J-mla58 Discussion: http://groups.yahoo.com/group/lrk-torquemax/message/12281 Vriendelijke groeten ;) Ron...
  16. ron van sommeren

    FS: 2000magnets N45H, 120C, epoxy coated, 10x5x2.5mm magnets

    Not being sold by yours truly! Magnetized through thickness (2.5mm). You can tile/cascade them to make larger magnetpoles. See http://groups.yahoo.com/group/lrk-torquemax/message/12273 • brushless motor building tips & tricks • diy brushless motor discussion group • Drive...
  17. ron van sommeren

    brushless motor animations/simulations

    Brushless motor animations and simulations. Mostly outrunners but inrunners are just outrunners turned inside out. A compilation http://www.rcgroups.com/forums/showthread.php?t=216928 Vriendelijke groeten ;) Ron • brushless motor building tips & tricks • diy brushless motor...
  18. ron van sommeren

    Magnet suppliers

    Another excellent magnetsupplier, Swiss/German. Lots of good magnet and magnetism information in the FAQ. Magnets can also be made to specification http://www.supermagnete.com BTW http://www.engconcepts.net can also supply magnets to customer specs. edit 07-31: changed title from...
  19. ron van sommeren

    glueing in magnets

    Method for glueing in magnets, use a good quality slow epoxy.. Magnet orientation matters! http://www.torcman.de/index_e.htm -> downloads -> Assembly Procedure TM280, 350, 430 -> chapter 3 Make sure you glue them in alternating: N-S-N-S-N-... Animation from GoBrushless Vriendelijke groeten...
  20. ron van sommeren

    Hyperion-motors goes Scorpion

    Scorpion will produce the Hyperion Zs-series motors and the Atlas controller series. 55mm outrunners are in the works. See http://www.rcgroups.com/forums/showthread.php?t=1022801 Hyperion http://www.aircraft-world.com (Japan/USA, NipponDave a.k.a. David Radford) http://www.hyperion-eu.com...
  21. ron van sommeren

    diy brushless controller designs, a compilation

    Compilation of diy brushless sensorless controller designs: http://www.rcgroups.com/forums/showthread.php?t=140454 Vriendelijke groeten ;) Ron • brushless motor building tips & tricks • diy brushless motor discussion group • Drive Calculator download & discussion group...
  22. ron van sommeren

    new Scorpion motors and controllers

    55mm.dia x 25height, 55x35 and 55x45mm motors 16 LiPo cells, 150, 200 and 300A controllers See http://www.rcgroups.com/forums/showthread.php?p=11190082#post11190082 Vriendelijke groeten ;) Ron
  23. ron van sommeren

    diy high torque direct drive multipole motors

    Several designs for direct drive motors: http://www.rcgroups.com/forums/showthread.php?t=587208 Gelukkig Kerstmis en zalig Nieuwjaar ;) Ron • brushless motor building tips & tricks • diy brushless motor discussion group • Drive Calculator download & discussion group...
  24. ron van sommeren

    preventing sparking when connecting battery and controller

    http://mgm-compro.com/ -> Tech info -> How to prevent sparking ,,, Gelukkig Kerstmis en een zalig Nieuwjaar ;) Ron • brushless motor building tips & tricks • diy brushless motor discussion group • Drive Calculator download & discussion group • int. electric fly-in...
  25. ron van sommeren

    too long battery wires will kill controllers

    Battery wire inductance is the main cause of problem, not wire resistance. The wire-inductance causes spikes on the power input. Long motor wires however is not a problem. If you have to use long battery wires, install extra caps on the brushless controller. Reasons, manufacturer statements...
Back
Top