Tag Archives: Enertion Space Cell

I Built Another DIY Electric Longboard With More Power

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My original DIY Electric Skateboard is quite possibly one of my favorite things I’ve built so far and the feedback has been phenomenal. Every ride is an opportunity to discover inventive ways to capture the board on video. However, the communal experience of riding with other people is where the real fun begins. The performance gap between my DIY Single Hub Eboard and my Yuneec EGO is too wide so the only solution was to build another board. Do I really NEED more than one? Absolutely not. But the shared experience of riding with others is priceless.

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DOING THE DUAL

I had the option to either replicate my original DIY Single Hub or go for something a little different. Perhaps a single belt drive or a dual setup. I ended up choosing a dual hub motor system. There’s a bit of a perpetual debate on belt drive vs. hub motors and it always comes down to personal preference. The stealth and coasting ability of the Carvon Single Hub is incredible. But the best feature to me is that it can withstand some of the harshest conditions imaginable. Harsh conditions during a Michigan Winter include rock salt, potholes, uneven pavement, snow, black ice, etc. Once I decided on using Carvon Dual Hubs for my next build, choosing the rest of my parts was fairly simple.

CHOOSING THE PARTS

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JET TOMAHAWK “PEACE OUT” DECK
I knew this build would not be a mini cruiser like my last one, but I loved the quality of my Jet deck so I wanted to find something similar but with a longer wheelbase. I ended up going for the Jet Tomahawk because of it’s freeride design and variable wheelbase from 23.75″ to 28.25″. The Tomahawk shares similar wheel wells like my Jet Spud but has more of an aerodynamic, missle-like shape. When it comes to choosing a deck, Muirskate is a great resource for all things longboards. Shout out to Scott!

Price: $79.95

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Jet Tomahawk “Peace Out” Deck

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CARVON V2 DUAL HUB MOTOR + MATCHING TRUCKS + WHEELS SET
As I mentioned, the durability of the Carvon Hub is what did it for me. Jerry at Carvon knew how much fun I was having on a single hub but said a dual would be even more of a blast. Since I pretty much committed to a big boy board, I ended up going with massive 97mm wheels which is recommended for 10s-12s Li-Po packs. Like last time, the Carvons arrived on time with a clean, professional build all around – heavy duty 2250W brushless outrunner motors, 10″ black trucks with matching black anodized motor sleeves and ceramic bearings. There’s been some questions about why the motor isn’t completely hidden inside of the urethane and I would assume it’s to create the actual feel of riding on a wheel as opposed to riding on a motor. I haven’t tried the thin urethane hubs on an Inboard or Stary but I’d be hesitant about riding those anywhere but pristine, paved roads in California. Where I’m from, the roads are tough and I have no hesitation blasting through them with Carvons.

Price: $599

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Carvon V2 Dual Hub Motors + Matching Trucks + Wheels Set

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ENERTION 10S SPACE CELL BATTERY
The Enertion 10S Space Cell has been so reliable and convenient that getting another one was no question. I haven’t had the chance to perform any range tests yet but it’s more than enough juice for a full day of riding on single hub and it will be interesting to compare the duration with a dual hub. The new version of the Space Cell also features an improved power switch and Jason’s customer service is top notch.

Price: $343.38

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Enertion 10S Space Cell Battery

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OLLIN BOARD COMPANY VESC – OPEN SOURCE ESC SPEED CONTROLLER
I doubled down on the Ollin Board Company’s VESC, still the best electronic speed controller created specifically for electric skateboards by Benjamin Vedder. Like I said, I’ve been riding hard in single digit Michigan weather in some of the most adverse conditions ever and have had no problems with the VESC at all. Honestly I don’t even think about it, which is a testament to the quality (heavy duty wiring, clean soldering, military grade, gold plated PCB’s, firmware testing) and is also coated for moisture and corrosion protection. The price on the Ollin Board VESC has gone up a bit but with the warranty and repair guarantee, it’s well worth it. Also be sure to pick up a CANBUS Connector to power the VESC’s together.

Price: $165

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VESC – Open Source ESC Speed Controller

Price: $5

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CANBUS Connector for VESC

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FLITE TEST XT60 POWER Y-HARNESS
This 14AWG Y-Harness comes with presoldered XT60 connectors and is used to connect the dual VESC’s to the Space Cell.

Price: $7

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Flite Test XT60 Power Y-Harness

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TORQUEBOARDS 2.4GHZ MINI REMOTE CONTROLLER
Once again, I went with TorqueBoards 2.4Ghz Mini Remote from DIY Electric Skateboard. I’ve dropped it a few times and it’s still going strong. And it really does seem to last forever on only 2 double A batteries.

Price: $50

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TorqueBoards 2.4Ghz Mini Remote Controller

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MISCELLANEOUS
Some odds and ends that I needed to complete my build.

$4.95 – Khiro 1/4″ Shock Pad Large Skateboard Risers

$4.95 – DBS Dank Bolts 1.25″

$6.19 – CCNS Neoprene Sheet 1/4” 12″x12″ Self-Adhesive

2 x $1.18 – 2 x #8-32 x 1 in. Phillips Flat-Head Machine Screws (5-Pack)

2 x $1.18 – 2 x #8-32 Stainless Steel Machine Screw Nut (4 per Pack)

$1.18 – #8 Zinc-Plated Steel Flat Washer (30-Pack)

THE ASSEMBLY

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Like last time, I prepped the Jet Tomahawk deck by sanding away the paint job and spray painting it with glossy black. Covering those raw wooden wheel wells also looks a little better in my opinion.

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Once the VESC’s arrived I programmed it with the BLDC Tool here and tweaked some of the settings based on my previous build. A few things changed when switching over to a dual configuration. Here’s my settings that I used for each VESC.

MOTOR CONFIGURATION
Motor Max: 60.00
Motor Min: -30.00
Bat Max: 15.00
Batt Min (Regen): -12.00
Absolute Max: 130.00

CURRENT CONTROL
Startup Boost: 0.030

APP CONFIGURATION – GENERAL
Controller ID: Input “0” for VESC 1 and “1” for VESC 2
Enable Send status over CAN
Enable PPM

APP CONFIGURATION – PPM
Enable Multiple ESCs over CAN
Enable Traction Control

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Then, I binded the TorqueBoards remote to the receiver. Be sure to bind it properly to enable fail safe. If not, the board will go full throttle when you turn off the remote which is a major safety hazard. Next I added a JST cable to VESC 1 and the CANBUS Connector to connect VESC 1 and VESC 2. I also added some hotglue to all the connectors to prevent the connection from coming loose. Finally I added some velcro on the bottom of the VESC’s and the receiver. This will keep things secure inside of the enclosure.

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Next I prepped the Enertion Space Cell battery by adding velcro to the top. I found three strips placed equally across the length of the battery was enough.

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On the other side I added weatherstripping as a cushion. This side faces the skateboard deck so it’s important to have a little bit of cushioning to guard against vibrations.

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Next I prepped the RunPlayBack enclosure with corresponding velcro strips for the battery, VESC and receiver. I’m really happy with the size of this enclosure and the two piece design. Everything fits like a glove, especially the VESC’s.

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I carefully placed the Space Cell into the enclosure, making sure to align the power button, charge port and voltage display with the corresponding holes and connected the VESC’s with the Y-Harness. I also added a small flap of rubber as a cover.

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The Carvon Hub Motor and wheels were next. I picked up some 1/4″ Khiro shock pads and 1.24″ DBS Dank Bolts to mount the trucks to the deck. Finally, with everything in place I secured the enclosure using #8-32 machine screws, washers and nuts from Home Depot.

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CONCLUSION

Although my original DIY single hub eboard gave me the confidence to attempt another build, moving up to a dual build was no simple task. By doubling the major components, everything had to be bigger and beefier – from the choice of my deck to wheelsize to the enclosure. Once complete, I realized I created a beast – a literal land missle that dwarfs the nimbleness of my single hub board. I’m not quite sure I could use this as a daily cruiser but for the times when I have a lot of open road to let loose, this is the perfect build, especially as a weekend warrior.

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However, no matter how you slice it, moving up to a dual build isn’t cheap. Doubling the price of a VESC and hub motor presents a challenging value for those who are looking to get into DIY. Starting on a single hub build is more affordable and will definitely give you the confidence to move into a dual build if you crave more power.

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In my first article, I said that building a DIY electric board made me a better person and I still believe it. In only 2 months I’ve been able organize a local DIY eskate group called A2ESK8, engage in interesting conversations with the online DIY community as well as local tech and maker folks who find electric longboards fascinating. Right now the big barrier of entry is the price. But like drones and other electric vehicles, once manufacturing costs go down and battery technology improves, eboards will become more accessible. Until then, pushing the limits of emerging technologies is a blast and now that I have a second board, it will make that experience even better. So whose ready to ride? #A2ESK8

Here’s What 28mph on an Electric Skateboard Feels Like

My obsession with DIY Electric Skateboards is at an all time high at the moment and as promised, here’s a follow up video of my DIY build cruising through a college campus parking lot courtesy of my boy Patrick. After a few weeks of optimizing my VESC based on the Carvon V2 Single Hub Motor and Enertion 10S Space Cell, I came up with the best all purpose BLDC Tool setting for this configuration:

Motor Max: 60.00
Motor Min: -30.00
Bat Max: 30.00
Batt Min (Regen): -12.00
Absolute Max: 130.00

In BLDC mode, we hit a top speed of 28mph despite the rock salt, pot holes snow puddles and rough terrain on these Michigan roads. My RunPlayBack Sulaco V1 Enclosure was definitely put the test but held it’s own and protected the electronics from the elements. Check out the video above to get some more insight on how I make these things.

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I was able to film Patrick while riding the Yuneec E-GO but it was nearly impossible to keep up with him. The torque of the E-GO’s belt drive has a bit more throttle snap than a VESC + hub motor combo but it’s simply no match when it comes to the top speed and coasting ability of the Carvon. Once you taste the speed of a DIY Electric Skateboard, it’s really hard to go back. I will conduct some range tests when the weather gets better but for now, I may need to build another electric board just to film this one. Stay tuned!

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Carvon V2 Single Hub Motor + Matching Trucks + Wheels Set

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Enertion 10S Space Cell Battery

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VESC – Open Source ESC Speed Controller

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RunPlayBack Sulaco V1 Enclosure