Some time ago I bought a BoardUp Lite skateboard (https://goboardup.com/shop/boardup_lite/) and I found it to be a fanstastic skateboard! It's light and small but it also feels like a normal longboard while riding it. But just like any skateboard, it can be tiring to use them when you have to travel 4-5 km. The best solution to this problem would be an electric version of this skateboard, and this already exists! BoardUp makes the BoardUp Bolt+ (https://goboardup.com/shop/boardup-e-dual-longboard/) which has many of the benefits that I was looking for, but it is not that good on some other aspects:
- It's quite expensive, at 700 USD, and I had a budget of around 400 euros (including the 150 euros that I spend to buy the skateboard in the first place)
- It's heavy (7.6 kg) due to the dual hub motors.
Therefore I took my BoardUp Lite skateboard and built my customized electric version. To keep it light I decided to make it belt driven, this way I could use a smaller motor. I also used a single motor instead of two and I increased the battery size slightly, from 160 Wh to 194 Wh. From my esitmations, this should be equivalent to a range of 18 km, for my current weight. I managed all of this while keeping the weight at 5.9 kg.
To keep the cost low I decided to build my own battery. This meant buying a spot welder, but I see that as an investment rather than an extra cost. Spot welder excluded, the battery (18 cells + BMS) cost me only 50 euros. The rest of the components were:
- VESC (open source electronic speed controller)
- 5065 brushless engine
- 3D printed case
- Some old skateboard trucks that I has from an old longboard
- Pulleys, belt and motor bracket
- The BoardUp Lite skateboard
All of that cost me 450 euros, just over my budget but still acceptable.
I started testing, but I had problems with the belt skipping. Therefore now I am waiting for a new belt drive system which should compleately remove belt skipping...hopefully it arrives soon.
I will update you once everything arrives, and I'll let you know the details of its performance and range.