Go-llerblades: Motorized Skates - Part 1




About: Hi! I'm Star Simpson! I'm a real me! See more at [http://stars.mit.edu stars.mit.edu]. photo by [http://bea.st/ Jeff Lieberman] (http://bea.st) stasterisk - my name is Star, and when I was 13 I ...

Take a bunch of common parts, and create the hottest set of wheels around.

I got almost everything here for cheap or free, or from a swapmeet.

Say goodbye to making gliding motions in order to skate - now you can stand still and watch the scenery pass you by!

Check out Go-llerblades Part 2 also.

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Step 1: Angle Grinder

I got this one at a swapmeet for $9.

Take off the guard plate (if yours has one) with a screwdriver.

Step 2: Power Source

You can run power tools on dc power!

Along those lines, I threw together five 12V batteries. More batteries = more power.

Test to make sure they're all roughly the same voltage, or one will drain the others.

Together, my pack measured 60V.

I crimped the wire connections to make them fast-disconnecting, and less prone to spark or come off. Covering them with tape might have worked just as well.

Step 3: Connect the Grinder to Power

Remember to insulate with some electrical tape or something.

Sparks and shorts are exciting, but will burn your carpet, and make your batteries sad.

Step 4: Attach a Wire Brush

This cost me around $4 at the local hardware store.

Spin it on finger-tight - the angle grinder will self-tighten as it spins.

Step 5: Tape the on Switch "on"

So that when you plug in the angle grinder, it goes. I mean GOES. Full-speed.

It's probably a good idea to put a switch somewhere, so you can turn this beast-machine off.

In this version, I just put trust in my sense of balance and lifted my foot off the ground while flailing to find a power cable to rip out. This clearly stood out as the better of the two options.

Step 6: Make Your Battery Pack Portable

I got this bag for free - throw the batteries in anything you can carry whilst 'blading.

I considered making a battery-belt, for more even weight distribution. The bag was definitely less comfortable, so I went with it.

I taped the batteries together before throwing them in the bag, to keep them together and prevent shorts.

Step 7: Don Gear

Get set -

Step 8: Attach Skates & Grinder

Duct Tape - $1.

Do whatever to make the grinder attached sturdily to your leg.

Make sure the wheel is spinning in the right direction.

Step 9: Go!

These skates create plumes of concrete dust smoke behind you - awesome!

I wonder if I could win at the Seattle Power Tool Drag Races

edit: Go-llerblades Part 2 is full of the improvements I made.

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    53 Discussions


    4 years ago on Introduction

    seriously man..looks to me like an accident waiting to happen... y don't you use an 18v cordless grinder


    7 years ago on Introduction

    Why not turn the grinder around and affix it in a manner where you can fasten the grinder to spin one of the wheels?


    7 years ago on Introduction

    I can't see this getting very good speed, what have you been able to get up to?


    7 years ago on Step 9

    Id turn the guard around if I were you buddy. When those wire wheels wear down, they tend to throw off the bristles like needles. They WILL go through a pair of plain jeans and stick in you! Been there and done it, I use one quite often. They will penetrate heavy work pants too.

    2 replies

    Reply 7 years ago on Introduction

    Im with TRF on this one, been there done that . had one wire stuck in my lip Even worse fling a couple wires at some bystander and things could get expensive real quick .


    Reply 7 years ago on Introduction

    agreed you should use a proper wheel. the brush is in effective. it would also result in a turning effect.


    Reply 7 years ago on Introduction

    The wheel actually sucked a lot more than the brush did. And the brush left track marks! See part 2.


    Reply 7 years ago on Introduction

    something with high rpm should use some heavy duty wheels. certainly not plain plastic.

    instead of 5 battery's why not just one battery and a small power inverter like you plug into you power point into your car to charge your laptop that would greatly reduce the weight

    5 replies

    Amps. So, an inverter changes AC into DC - I already have DC. I assume you mean a voltage converter in general. The voltage doesn't really matter here, since it's the ability to overcome friction, which is torque, which is porportional to current that matters. RPM is porportional to voltage, which I didn't care about. Also, it was really easy to put together a bunch of batteries, since I had them all on hand. They're easy to get, too - people throw out good batteries all the time. I could have done it with fewer batteries, but the stack of five fit nicely into the bag. If you make one you can play around with the batteries and tell me what works for you!

    > "a while ago I bot a deal to cane 12v-20v dc to ac for my laptop on a road trip and it was called a inverter"

    did you mean, "a while ago, I bought [something] to change 12v-20v dc to ac.. "?

    Your laptop runs on DC, and yeah, converting AC to DC is called inverting.
    See this.

    Think about it. See why it makes sense?

    Dude you are correct in calling it an inverter if it converted 12v DC to 120v AC, which from this response of yours to stasterisk seems to indicate, but if it converts
    12v DC to 20v DC as you originally stated it actually is ( in electronic/electrical terminology) a voltage converter.

    Inverter -> DC ->AC
    Voltage Converter : V ( AC or DC ) to different V ( same AC or DC )

    The opposite of an inverter is usually a transformer coupled with a rectifier ( usually a bridge diode one ) to convert the AC to a usable current by the appliance.

    You actually might have saved yourself money by getting a voltage converter kit from an electronics store to convert your vehicles unregulated 12VDC supply into a regulated V (whatever your laptop V supply is ( the same as the battery pack in it )) DC, but it would have the drawback of being restricted to powering only devices that operate on the same supply. Whereas your inverter can power many devices.

    The main reason we generate AC is to supply power over long distance via power lines 99% of the time it is converted to DC on arrival. So to use a an inverter to convert a DC supply to AC to convert it back to DC over a short distance is redundant. Before you ask it IS possible to power some AC devices
    with straight DC (not all) it is dependent on their supply circuitry. Check out the history of AC/DC ( currents not the band (sorry bad pun)).

    please dont take any offence at anything I've said but as an electronics/telecommunications technician and electrician with over 15yrs experience I only wanted to correct these point and hopefully point you in the right direction research wise. best wishes.

    PS staterisk love the ible.. very creative (like most of yours) remind me of the jefferson's when are we going to see the jet powered skateboard? (oops! shouldn't give away ideas so freely, damn!)