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  1. A

    Manned multirotor

    Haha, OMG! Seriously, read up, learn, think, reflect, THEN judge/comment. You are 90% clueless. Its a penta system, all of them running simultaneously. Obviously not safe by any conventional means, but the safest DIY manned multi currently out there as far as I am aware of. I have turned off 16...
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    Manned multirotor

    A speed test has been on my list for a long time, and now is finally the time. The structure is optimized for light weight and hovering flight, which becomes apparent in this speed test where the back side of this design becomes apparent, namely high drag. Sitting in the chAIR it fees pretty...
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    2m diameter wheel inflatable car-ish build!

    Surprising test result when measuring the maximum traction force on water! pMEtX0duGUg
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    Power tool mod. -series wound to PM DC motor

    Making a simple AC power tool hack to learn something about these wonderful every-day-marvel machines! 62beM6Q4Z_U
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    Large EV? - I have one of those!

    New episode... :D fOC6uzXiGQ4
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    Large EV? - I have one of those!

    -Hello! I Just want to share my latest creation with all EV enthusiast here! There is allot of background in episode 1 for any one intrigued, this is episode 7 :D -PdzraiPrTk Episode 1: 24uW2Rwwi6k
  7. A

    2m diameter wheel inflatable car-ish build!

    First successful test. Im very conservative on the throttle for obvious reasons, but it looks promising so far. G8WcXCmEySk
  8. A

    4XElectric drill utillity vehicle build

    Love these affordable series wound electric motors :D LI7aV6HQPTc
  9. A

    2m diameter wheel inflatable car-ish build!

    Im building an all terrain vehicle based on 4 concrete mixer motors, each one connected to huge inflatable wheels. Feel free to subscribe on youtube and join me in the exciting creative learning process! First episode: https://youtu.be/24uW2Rwwi6k...
  10. A

    Manned multirotor

    Looking forward to a new flying season! ffb_F7Agqv4 Two other clip in the build/flight log youtube series that might be of extra interest: :) 5_xSN9fIQfI OkGyz0m8TuA Youtube channel: amazingdiyprojects
  11. A

    Efficient diy propellers + scratch built quadcopter

    :D CmhwROMBK8E
  12. A

    Efficient diy propellers + scratch built quadcopter

    Just playing around with tech stuff (as ALWAYS!) I discovered that you can build surprisingly efficient propellers from cylindrical objects, or laminated on top of one. Flight of scratch built 1:4 scale :mrgreen: quad at the end of the movie. JQmFwtc0HOw Youtube channel...
  13. A

    7 RC sensorless controllers running 1 very neat DIY motor.

    Sure, here is a link: http://www.evalbum.com/3318
  14. A

    7 RC sensorless controllers running 1 very neat DIY motor.

    Ha,ha, I think you will worry about other things than smoke if it start to burn… :wink: Maximum power test run with 11x90Ah thunder sky cells : http://www.youtube.com/watch?v=8rY2VDB4Gw4 Enjoy!
  15. A

    DIY electric motors

    Thanks guys, OK, maximum power test run with 11x90Ah thunder sky cells : http://www.youtube.com/watch?v=8rY2VDB4Gw4 Enjoy! :D
  16. A

    7 RC sensorless controllers running 1 very neat DIY motor.

    Hi all, The building instruction is now finalised and available at: http://www.amazingdiyprojects.com /Axel
  17. A

    DIY electric motors

    Hi all, The building instruction is now finalised and available at: http://www.amazingdiyprojects.com /Axel
  18. A

    DIY electric motors

    Hi, Project status: I’m still waiting for Luke, liveforphysics, to get back to me with a corrected building instruction text. However, I seem to have lost contact with him, he does not respond to the e-mails I send him. I have made some progress though. I have now rendered the final...
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    7 RC sensorless controllers running 1 very neat DIY motor.

    Yes, time is a major factor.... And speaking of time; i once dismantled a car alternator with the objective to rewind the stator and build a permanent magnet rotor. After a few test windings around a pair of teeth I realized how hard that would be an how time consuming it was, so I started to...
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    7 RC sensorless controllers running 1 very neat DIY motor.

    Hi all! I believe that it is possible to build very efficient motors with amateur means. :D Water cooled version single ESC motor. I have built motors slightly more efficient than the Turningy motor in picture, also more efficient then some Plettenberg motors. I have compared the power...
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    7 RC sensorless controllers running 1 very neat DIY motor.

    Hi, “"Router" is the name of the machine you're asking about.” Thank you! “I intend to flater you with plagerism, as you seem to have the same tast in equipment & you are doing exactly the things I am on the path towards. You will get full credit in my future builds. If I...
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    7 RC sensorless controllers running 1 very neat DIY motor.

    Hi, Enjoy!
  23. A

    7 RC sensorless controllers running 1 very neat DIY motor.

    Hi, and again, thanks for the positiv spirit. “What did you have in mind to run this motor in, perhaps an ultralight plane?” I have though about building a paramotor back pack. I used to have a paragliding license, but I have decided to put it in a Yamaha 125TZR motorcycle to get...
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    7 RC sensorless controllers running 1 very neat DIY motor.

    Hi all, and thank you for your positive veiw on this project. Altough i have build several electric motors Im not an expert in this area in any way. However I will gladly try to answer questions regarding to this motor if there are any. The 7 controllers are the "super simple 90-100A" that...
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    DIY electric motors

    Interesting link, Dean, thanks. Well, I did not manage to cope with the heating of my homebrew ESC at power levels above 500 Watt so i decided to switch to a 3phase motor design. This actually results in a motor even easier to build since you do not have to think about the right position for...
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