Introducing my third prototype electric skateboard: the Banana Board! It’s lighter, cooler-looking, and has a longer range than the second electric skateboard. This board features a CNC cut deck, a longer range than my previous skateboard, new electronics, and a smaller electronics enclosure. Weighing in at 11 pounds, it’s also the lightest electric skateboard that I have built so far. This post will be a rough guide/build log on the Banana Board. I’ll make a video on it as soon as I upgrade my computer.
The deck I used was cut from 1/2″ scrap plywood using my dad’s homemade CNC machine. I started the design process in Photoshop, where I imported and refined a deck design. I then took the resulting image file over to Inventor, where I made a 3D model of the deck. Then I took the 3D model and brought it over to Mastercam X5, where I was able to generate the code needed to cut the deck.
Down in the garage, I loaded the .NC file into Mach3 Mill, drilled some pilot holes using a counter-sink bit, then cut the deck using a 1/4″ end bit. I repeated the process again, and ended up with two identical decks. I’m really happy with the deck style I chose; it’s the perfect balance between speed and control for an electric skateboard!
Here’s the G-Code I used to cut the deck: Deck.NC
The new circuit for the electric skateboard consists of 2x 3s 4Ah 20C Li-Po batteries hooked up in parallel in order to power a 3s ESC, rather than a 6s like on the old skateboard. This means that the top speed of the skateboard is limited to about 22km/h. However, the speed limit is a good thing. These brushless motors are more efficient at lower speeds, and even though we used less capacity batteries, we get slightly more than 10km per charge.
The receiver we used was once again the GT2B, but I’m planning on replacing it with one of my Bluetooth smartphone receivers to make it more of a commute vehicle, rather than a super fun toy (which it most certainly is!). The drive system/motor assembly was the same as the one in the electric skateboard v2.0.
This electric skateboard is a great improvement over the old versions. It’s light enough to carry, yet has enough power and endurance to really be used as a “last-mile” commute vehicle. This particular board is for my 9-year-old cousin (who’s feet are shown in the very first photograph of this post) but the board definitely has enough power to propel a growing teenager like myself, and my dad (but not at the same time!).
The next board is going to be a variation of this banana board, but it’s going to include a chain-drive, and the electronics from the previous electric skateboard. I’m going to be making very detailed videos on this project, and many of my other projects once I finish building my editing workstation PC, so be sure to subscribe to my YouTube channel if you haven’t already!