HubBoard 4WD, Dream Sport Build for Racing

[HubBoard]

Hello, everyone! So happy to see this great, conscious and smart builders in one place!

I started my first electric skateboard project, and from the beginning it’s ambitious.

I purchased a bamboo deck from company NAKED. Naked board-deck

It gave me the look which I wanted to use, Sport, fast, low, and bamboo. I use it now to ride around.

I bought 4 engines from China, called W4 In Hub motors, probably same as DIY electric skateboard offers, or from a similar producer.

In hub motor

They are Orange, 83mm wide, and looked good for the price. I got version 130KV.

Now I ordered 4 VESC controllers from DIY electric skateboards, I decided to trust these ones as 4.12 is around for a while. I also get one of controllers and receiver offered on their shop.

While I wait for the parts I still didn’t decide which battery I should use, I know it has to be (8S-10S) pack for the engines.

I might also use two batteries, one in front one in the back.

And here my question to you beloved Electric Skateboards Builders

Perhaps you have a better eye on battery market as so many things changes quite fast, what you recommend to consider? I’m familiar only with a hobbyking website.

I have plans for this Skateboard to be fast, I want to achieve around 40-45 km/h if possible, but I know distance will be the problem. I know 4 engines will not give this to me but I was thinking about programming front and rear differently, so back gives good acceleration, and front better speed. Is it possible? two batteries are not a problem to me as well as I don’t care about weight.

I know about many difficulties that I will encounter with this build, but this is my hobby now and I can’t wait to work on it.

Feel welcome to put my thoughts in place and I will be happy to hear any recommendations or ideas!

[jaymu86]

Parked and can’t wait for ride report

[HubBoard]

Update 1

• I got 4 Vesc controllers, remote, and 2.4 receiver, and connectors.

• Currently searching for batteries for this setup. (8s-10s). Motor 1200 W (one), 130 KV. Single or double power supply.

• Also in need for adapter banana male 5mm (Vesc has female 5mm, got engines with 3.5mm)

• I added PS4 controller for size comparison for people who didn’t see vesc size in real life (to me it was shockingly big)

Delimitations:

How to connect 4 Vesc, to control them under one remote controller? I have 4 engines.

Which batteries to use, one or two?

[wmj259]

I am running a 3x3S lipo battery system on my build. I also have a 4.12 and a 192KV 6374 motor.

Its better to use a 10S as thats the current “best” battery for the 4.12

[HubBoard]

Been a while out from the project, but now I am back!

Ordering battery now, any wonders about that company? Anyone worked with them? eskating.eu

I am considering 12s5p pack or 12s4p pack, I know bigger will be faster, but also heavier. Still I am pumped to go big and fast. Any thoughts on this one before I order it? After current research I found this option quite best/fast/comfortable as it comes with BMS, switch, and charging port.

FLAT 12s5p Eskating Electric Skateboard Battery Samsung 30Q (4a charger) -...

[HubBoard]

The prototype is ready. I didn’t manage to make 4WD yet ( I lost one screw for the engine) But, for now, 2WD feels good enough.

I made some test now, went throuh some crazy trips.

These are my settings I started with:

Sample Results (Approx 5km)

Metr App once showed me max speed exactly 60 km/h, reliable? it felt crazy fast, I couldn,t go faster as wind gave me turbulences and shaking on the board. It’s very low anyway and really feels made for speed, bummer is that I can only use flat surfaces, anything else destroys engines.

Right now I am fixing this *** engine, good i got 4 of them

My biggest current problem is my board suddenly stopped and I got VESC DRV8302 error

Any idea how can I start with esc problem?

[Battosaii]

DRV wizard unless you know how to change the DRV chip

[HubBoard]

The following faults were registered since start:

Fault : FAULT_CODE_DRV Current : -0.3 Current filtered : -0.1 Voltage : 47.46 Duty : 0.001 RPM : 149.8 Tacho : 3 Cycles running : 2 TIM duty : 15 TIM val samp : 2 TIM current samp : 4200 TIM top : 16800 Comm step : 6 Temperature : 29.67

Fault : FAULT_CODE_DRV Current : -0.5 Current filtered : -0.1 Voltage : 47.46 Duty : 0.001 RPM : 143.5 Tacho : 3 Cycles running : 2 TIM duty : 24 TIM val samp : 2 TIM current samp : 4200 TIM top : 16800 Comm step : 6 Temperature : 29.81

Fault : FAULT_CODE_DRV Current : -1.0 Current filtered : -0.2 Voltage : 47.45 Duty : 0.003 RPM : 151.7 Tacho : 3 Cycles running : 2 TIM duty : 49 TIM val samp : 2 TIM current samp : 4200 TIM top : 16800 Comm step : 6 Temperature : 29.96

Fault : FAULT_CODE_DRV Current : 0.1 Current filtered : 0.0 Voltage : 47.46 Duty : 0.003 RPM : 151.3 Tacho : 3 Cycles running : 2 TIM duty : 48 TIM val samp : 2 TIM current samp : 4200 TIM top : 16800 Comm step : 6 Temperature : 29.96

Fault : FAULT_CODE_DRV Current : -0.2 Current filtered : -0.1 Voltage : 47.45 Duty : 0.004 RPM : 150.1 Tacho : 3 Cycles running : 2 TIM duty : 74 TIM val samp : 2 TIM current samp : 4200 TIM top : 16800 Comm step : 6 Temperature : 29.96

Fault : FAULT_CODE_DRV Current : 0.4 Current filtered : 0.1 Voltage : 47.45 Duty : 0.006 RPM : 154.9 Tacho : 3 Cycles running : 2 TIM duty : 107 TIM val samp : 2 TIM current samp : 4200 TIM top : 16800 Comm step : 6 Temperature : 30.07

I got the faults on my vesc. I also can’t run motor wizard to the end, it stucks on measuring R=0

I noticed my voltage hits 47v, I thought is should hold around 43v.

Any ideas what is wrong in my setup? Now I consider FOCBOX to handle 12s battery better. Best wishes

[Lionpuncher]

Thats a blown drv. For sure. Depending on where you live, you can source somebody to fix it and replace the component. Or sell the vesc and get a new one.