Picture of Go-llerblades: Motorized Skates - Part 1
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

Picture of 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

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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

Picture of 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

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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"

Picture of Tape the On Switch
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

Picture of 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

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Get set -

Step 8: Attach Skates & Grinder

Picture of 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.
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no1232 months ago

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

FrozenIce3 years ago
hahaha soo random :)
bonestock3 years ago
Why not turn the grinder around and affix it in a manner where you can fasten the grinder to spin one of the wheels?
raith20063 years ago
I can't see this getting very good speed, what have you been able to get up to?
(removed by author or community request)
thank you for saving me the time to type that
nerd12 leon08623 years ago
agreed you should use a proper wheel. the brush is in effective. it would also result in a turning effect.
stasterisk (author)  nerd123 years ago
The wheel actually sucked a lot more than the brush did. And the brush left track marks! See part 2.
something with high rpm should use some heavy duty wheels. certainly not plain plastic.
trf3 years ago
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.
cincymikeb trf3 years ago
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 .
You'll put your eye out kid !
wouldn't you sorta go in circles and is it hard to control? otherwise nice.
stasterisk (author)  the_burrito_master3 years ago
nah, you don't go in circles.
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
stasterisk (author)  juggalo_assassin1837 years ago
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
stasterisk (author)  juggalo_assassin1837 years ago
> "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?
i just know that it was called a inverter and it changed dc to ac it had 2 120 outlets on it and conected to our power point in the car so i could plug my wall charger into it like this thing here
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!)

stasterisk (author)  stasterisk7 years ago
Actually, in retrospect, I'm not sure why I didn't put my batteries in parallel.
TSC4 years ago
Nice !!!!!!!!!!!!!!!!!!!!!!
sharlston5 years ago
hey thats good but how fast does it go?
neardood6 years ago
That looks EXTREMELY dangerous. Also, would'nt the batteries be very hard to carry? Even so, please post a video.
stasterisk (author)  neardood6 years ago
They're as easy to carry as a bag full of groceries

the video is in part deux
JAKEjones16 years ago
sweet idea duz it realy work good?''and is it fast enough or shuld i get two grinders and have a reserve/booster one? nice instructable! oh and... how fast duz it go in m.p.h?
qwerty902107 years ago
i the right kind of stupid to do this while not being able to use roller blades AWESOME
thepaul937 years ago
all i have to say is WTF
starisanass7 years ago
(removed by author or community request)
> shows how immature, idiotic and stupid you are . And your response certainly indicates a high level of intelligence and maturity. ;)
starisanass: You stupid stupid stupid man. You think it was on purpose? Why?
jfc4437 years ago
has potential however i dont really fancy carrying round 5 huge ass batteries. could use a transformer or something surly. and wireless would b awesome. but still cool idea tho and has probly given insperation to quite a few people nice 1
Zo1x7 years ago
hahah i can just picture the person going in a circle because its only on one wheel, dude,Do it to both wheels,that would like like crazy.
Ward_Nox7 years ago
1 step closer to Air Treks
tomfoolery7 years ago
I have a idea! (amazing isnt it?) Costom build two, thats right, TWO skates with builtin motors, brakes, baterypacks and wireless controll curcutry. Then build a remote. If you press the left button, the right skate sppeds and the left slows. The brake button would controll the brakes, ect. you get the idea. I would love to build this new idea of mine but im 13. While I do understand the technical aspect of it all, implementation is a big problem. Someone please build it! Btw, nice instructable. But the engeneering is very poor... duct tape? Are you serious?
stasterisk (author)  tomfoolery7 years ago
So, that was the original idea. In fact, four angle grinders, two on each foot, with opposing spins, would give you braking (both full speed slowing to a stop), reverse, and complete turning control. But I only had the two hours and the one angle grinder. Also, all those grinders would require a lot more power, which means a lot more weight. My favorite outgrowth of this idea is to have two powered skates, with a sit-down scooter in the middle - I have yet to acquire the parts for that, though. The engineering was fast, and functional. Yeah, duct tape. In part 2 I use bike innertubes. You use what you have on hand in the name of getting it done - I'm aware that this isn't polished.
Well, who says you have to use 4? 2 would be sufficient and I think there would be a better motor choice, because are angle grinders real that enegy efficient? im sure you could use less baterys with a different motor. and ill bet the wiring wouldnt be hard...
stasterisk (author)  tomfoolery7 years ago
2 would do all right, but only with 4 can you do reverse and braking without thinking about actual engineering. Think about the design for a little while. I used angle grinders because of the sweet gear ratio. Build something better than what I've done, and show me how it works!
First, it wouldn't take much engenering to use just 2 and have reverse abilitys. and it would lighten the batery load. and secondly, you would have alot more speed or power if you build your own gear box, but everyone's resources are limited so.. lastly, couldent you attach the angle grinder (or other motor) directly to the weel of the skate?
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