Brushless Motor From Computer Parts

21,011

27

28

Posted

Introduction: Brushless Motor From Computer Parts

My aim is a completely DIY brushless hubmotor for electric assist on bicycles based on recycled parts.
This is prototype 2. Prototype 1 was just a quick lashup and 3 will be full scale testing.

Share

    Recommendations

    • Spotless Contest

      Spotless Contest
    • Science of Cooking

      Science of Cooking
    • Pocket-Sized Contest

      Pocket-Sized Contest
    user

    We have a be nice policy.
    Please be positive and constructive.

    Tips

    Questions

    28 Comments

    Im thinking of doing similar thing for my bicycle to generate the power. I dont have the HDD magnets yet but ill try to find these. What do you think how does the size of coil matters much? I mean is the bigger coil better then smaller?

    Couldn't really say about the coils but I suggest matching their size as close as possible to the magnets.

    very nice here in the us we have a festival called tour de fat which is a celebration of alternative vehicles and im building a very heavy bike so thank you for this

    you could use the mount on a disk break hub to mount the magnets

    those magnets that are used in hdd's are usually (when they are the size he is using) actually two magnets butted up to each other, insofar as they have more than 2 poles
    each one has (im not sure) a NS-NS arrangment could make a bit of a difference if that were taken into consideration

    Are you going to make an instructable on how to make one?  Would be cool if  you did.

    I might do that, actually. Hadn't planned on it but with one thing and another it's been growing in my mind. Can't promise anything but keep a lookout.

    that would make a cool generator ,but would not be strong enough to power a bicycle. I once used a starter motor and a 12volt SLA battery from one of those kids power wagons,and that barely crept along,,I do plan on trying again with a ten speed ,so maybe the gears will help.

    I think on your Idea it may work if the magnets were placed along the hub ,and a series of coils were placed on a hemicircle outside the rear tire,as stated ,it would not self start but in theory would sustain the momentum you are going for some time.Thats the only way i see any amount of torque coming from such a motor ,the thing would need to be almost the same diameter of the wheel itself

    Those magnets look like they're from a hard drive.

    They are. The aim of this project is to recycle computerparts.