Introduction: Electric Longboard Mark I

Picture of Electric Longboard Mark I

So I live in the silicon valley, but I went off to college in Illinois and just after one semester away from home I come back to half my town riding around on Boosted Longboards. My friend rents one out and lets me try. So I go to the local skate shop and check the price. 2000$ for the one with the best specs.

This Is part one of my project to one up those greedy bastards.

ATTENTION

  • This instructable is less of a how to and more of a what not to do. I slapped together this project as proof of concept. It is not meant to be a finalized version (although can be with some minor additions). I hope it gives a reference to your personal electric board project.
  • I assume you have an understanding of electronics and have read a bit about other longboard designs.
  • Additionally: I do not hold any responsibility for your miss-use and incompetency. Do not attempt this project unless you know what you're doing

I will be making a Mark II in the near future... It will be a lot better

Current specs on my board:

~ 5 mile range (I use fairly shitty Lead acid batteries after I burnt my lithium ones with a shitty knock off Chinese charger)

~Max speed is over 30mph (scared to go much faster)

~Pretty buggy (Iv had it throw me off a few times)

~Able to accelerate quickly even when dragging my friends on their long-oards.

~way too much torque (Iv never had to hit the throttle all the way)

~400$ (>2000$)

~ 25lb (I used my old aluminum deck that I make last year)

Step 1: Materials

Picture of Materials
  • 2X Turnigy Aerodrive SK3 - 5055-280kv Brushless Outrunner Motor - $98.46
  • 2pk 12V 9AH Battery RAZOR Scooter - $30.88
  • 2X ZIPPY Flightmax 5000mAh 3S1P 20C - $49.44
  • Hobbywing Ezrun 150a-pro Brushless ESC- $98.99
  • Paris 180mm 43° RKP Longboard Truck - $53.99
  • HK-GT2B 3CH 2.4GHz Transmitter and Receiver - $23.63

Total Price: 305.95$ + price of the wheels and random hardware, and using Lead acid batteries.

http://www.amazon.com/Paris-180mm-Longboard-Trucks...

http://www.ebay.com/itm/like/151587875305?ul_noapp..

http://www.hobbyking.com/hobbyking/store/__58747__...

http://www.ebay.com/itm/2pk-12V-9AH-Battery-RAZOR-...

http://www.hobbyking.com/hobbyking/store/__18175__...

http://www.hobbyking.com/hobbyking/store/__31671__...

Additionally I snagged the wheels off of craigslist for $30 they are the 90mm Bigfoot wheels

http://www.amazon.com/dp/B0057IWIG4

The rest of the hardware I found laying around in either my machine shop at college, or my shop back home.

Notes:

Fuck Lipos for testing. They are so easy to damage or destroy, and if they go off while installed on the board you project is done for. Get a good charger if you are gonna use them, or a variable current/voltage supply and charge them yourself use a transformer and something like this :http://www.ebay.com/itm/311384008351?_trksid=p2060... and you'll be able to charge any batteries pretty quick. Also having a variable power supply allows you to revive old or dead batteries

Pick a better ESC than I did mine was expensive and finicky.

Step 2: Slapping It Together

Picture of Slapping It Together

I used the Mill in my shop to cut out two hold plates for mounting the motors. I cut 4 mounting slits so that I could adjust the spacing of the motor and slide it back to tension the belt.

Speaking of belts, do not do what I did and buy yourself a fucking THICK belt and some THICK gears to hold it. better yet use a chain and chain sprockets to drive the wheels

The Large black gears were 3D-printed on my friend printer. I recommend pirating or getting some freeware CAD design program, learning to use it and sending your STL files off to some manufacturer and getting them to make the gears for you. (it'll be an extra $30-$50)

I attached all the parts using either set screws or regular machine screws. I suggest welding the aluminum holders to the trucks. You are gonna need access to a TIG welder for that.

Caution!

  • One esc can only run one motor, unless both motors run in phase. To solve my use of having two motors. I fixed them together mechanically, So they are both spinning at the same speed Effectively turning them into one motor.
  • Do not get shitty Chinese Li-po chargers. My batteries were over charged and not extremely volatile. I put them in a metal container and keep them in stored away from any flammables.
  • Do no drop the board on your toes, it fucking hurts

Step 3: Ride It

Picture of Ride It

Give it a small push and don't hit the throttle too hard. The thing accelerates like a breast, but unless youve welded everything into place don't hit the throttle all the way. (I haven't even hit it all the way yet except on accident, and it instantly threw me off)

Step 4: Mark II

Picture of Mark II

Mark two will have a lot more functionally and a much slicker design.

  • I will design all the electronic systems myself
    • Redesign of the ESC myself
    • One ESC for each motor
    • One motherboard containing receiver module, ESCs, Bluetooth communication, USB connector, Lights, integrated battery charger.
    • My own BEC standard PWN receiver/transmitter system (probably base it SCoff of the arduino processor)
  • High end High Voltage Lithium battery pack (higher voltage lower Ah can be charged quicker)
  • Blue-tooth control in case I need to use my phone to control it.
  • Possibly a wifi enabled gps system that jots down location whenever It has access to wifi (probably better to let my phone handle this instead)
  • Possibly hand-wind my own motors. I could make fat two sided outrunners and make it AWD.
  • Bigger better, lighter deck
  • charge my phone from the batteries
  • Solar panels integrated into the deck?
  • Use the batteries as a portable welding apparatus.

Comments

NikolaiE (author)2017-04-01

Hello, I made an electrick longboard. But I have a problem with the drive belt, the tooths on it wears out. My motor is 400 kv and I have a 2, 3s batterys in series(22.2 v). And my esc is 70 amps, but is there anything I can change in the esc software that makes the acceleration longer?

bob8898 (author)NikolaiE2017-06-16

The teeth wearing out also seems like the teeth of the belt and the drive don't fit nicely...

lolomolo (author)NikolaiE2017-04-03

Not sure what youre saying there. longer acceleration? If you want a larger acceleration you will need to use an ESC rated for higher current and voltage, motors to go along with it and batteries that can supply it.

As for the teeth wearing out; use aluminum and make sure all the fittings are correct

KoenS1 (author)2016-11-17

nice build tutorial! I just started to make my own. https://youtu.be/yWeLAkTYFoY (build log)
I will try to make the best quality board under 400 $

bob8898 (author)2016-10-21

That motor is out of stock

bob8898 (author)2016-10-21

The turnigy brushless has been out of stock for a while... What is another option for a powerful and/or fast longboard?

SYUSO (author)2016-05-19

Since the ESC you listed is discontinued and you mentioned it being not that great, I was wondering if this one is a good choice.

http://www.hobbyking.com/hobbyking/store/__38787__Turnigy_Sentilon_V4_100A_5_12s_HV_Bulletproof_Speed_Controller_w_RPM_Sensor.html

Do mind my knowledge of electronics is basic at best

lolomolo (author)SYUSO2016-05-20

yea it looks good, im actually designing an ESC myself. I should be finished in a few months and ill put up a quick tut

noeen01 (author)2015-12-19

Hey, i think you have put an incredible diy instructable here, and just wanted to thank you for all the info and tips!

I am making my own all terrain long board after making my first one. i have a longboard and i attached 4 pneumatic 6" wheels to it. I was just finalizing on the motor or motor(s) and the battery to use. I want the board to be able to carry my weight (160) and all the weight of the board and travel at around 22mph. I have done a lot of research and the main company "evolve" makes all terrain boards and uses one (350w (700 watt max output) 5,500 RPM High Performance Brushless) motor. And then there is also boosted board which uses two brushless motors and gets a super high speed. I am planning to use either one or two turnigy motors or if i can find one bigger better motor i will use that.

I just want your input on which outrunner motor to buy and what design to go with? Also with which ever motor which battery do you suggest?

THANKS A LOT :)

lolomolo (author)noeen012016-01-09

I suggest using two motors for more "equal" acceleration. Use low KV motors as they usually are able to handle higher current and have a higher torque per volt. Use lead acid batteries for testing cause they are pretty durable, switch to Lipos or LiFes after you get it working. Alternatively you can wait till i finish Mark II, I will probably start publishing my progress soon.

CoolRextreme (author)2015-11-10

Nice build! And congrats on getting it featured as well.

May I make one suggestion: Be careful of language, lil guys n girls read these as well. I don't want any parents to get mad at you ;)

Anyway, I am deffinatly looking forward to the Mark ll.

Cheers!

lolomolo (author)CoolRextreme2015-11-11

thanks mate!

MrBeta (author)2015-11-08

No need to pirate software if you're a student. You can get most software packages with student credentials.

lolomolo (author)MrBeta2015-11-08

That's how I did it, but I'm assuming that not all people are students

DIY Hacks and How Tos (author)2015-11-08

Awesome! That looks like a lot of fun.

About This Instructable

9,349views

163favorites

License:

More by lolomolo:Do Nothing Toy - Aluminum RemeltingElectric Longboard Mark II (In-Progress)Electric Longboard Mark I
Add instructable to: