Knex Motor Modification

Introduction: Knex Motor Modification

About: You can find me over on Knexflux! https://knexflux.net

Are you having the red battery motor of knex and are tired of changing batteries all the time? This is the solution! With this you modify the motors to ones to be plugged in!

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: Gather Materials


First gather the materials.

Step 2: Prepare the Cable


First you preper the cable.

Step 3: Unscrew the Motor


Now you unscrew the motor. You just need that red half.

Step 4: Prepare the Red Lead

Veary simple, just screwing a hole.

Step 5: Using the Soldering Gun

Soldering gun

Step 6: Putting It Together

After you made this step you'll have to put 3Volt on the other end of the cable. Polarity is irrelevant because it still goes through the switch.

Be the First to Share

    Recommendations

    • Tiny Speed Challenge

      Tiny Speed Challenge
    • Spring Cleaning Challenge

      Spring Cleaning Challenge
    • Trash to Treasure Contest

      Trash to Treasure Contest

    28 Discussions

    0
    FanPlastic
    FanPlastic

    3 years ago

    I really want to do this now

    Is it possible to install a demultiplexer so the motor can run on batteries or by ac-dc transformer plug in

    0
    Sorunome
    Sorunome

    Reply 7 years ago on Introduction

    I don't know what you mean with the first half but as long as you don't put enery through the new wires you put there you can still run it via batteries. I don't know if it is a good idea to run it at the same time via power plug AND batteries...
    You must know that you are just adding a new function to your motor when making this.

    0
    Sorunome
    Sorunome

    Reply 7 years ago on Introduction

    Ah, ok.
    The modification is just as if you'd put at the contacts where the batteries are the wires.

    0
    Sorunome
    Sorunome

    Reply 7 years ago on Introduction

    It's just somehow nicer IMO the way in the ible

    0
    Sorunome
    Sorunome

    Reply 8 years ago on Introduction

    You mean that making the knex motor faster? Yeah. :)

    0
    HamenChips
    HamenChips

    Reply 8 years ago on Introduction

    Yeah but It's ok.

    How much miliamperes does your adapter produce at 3 volts?

    0
    Sorunome
    Sorunome

    Reply 8 years ago on Introduction

    1500 milliampere. It also still woks when I put 7 motors in parallel. :)

    0
    HamenChips
    HamenChips

    Reply 8 years ago on Introduction

    Woah that's about 4.5 Watts of pure electricity going through one motor.
    Better if you use smaller ones because the one you're using is very powerful it could burn a motor in minutes, mine is about 150Ma and it smelled bad after minutes of testing.

    0
    Sorunome
    Sorunome

    Reply 8 years ago on Introduction

    oh, sorry, it doesn't say the exact amount at 3Volt, you can tune it up to 12 V and THEN you have 1.5 Amper. :)

    0
    hedzup456
    hedzup456

    8 years ago on Introduction

    way cool....now you could leave something on overnight

    0
    Tornado96
    Tornado96

    8 years ago on Introduction

    nice mod but I honestly can't be bothered! :-P
    Nice ible though! 4.5*

    0
    Shadowman39
    Shadowman39

    8 years ago on Introduction

    Nice! But I'll probably stick with the plug-in motors Knex makes, because I don't have a soldering iron.

    0
    Sorunome
    Sorunome

    Reply 8 years ago on Introduction

    Oh, I see. Mabe It'll also work whey you twist the cable around that place you'll have to solder, but i think not so good.