Over the past several months us here at The Workshop have been designing and fabricating the next generation of go-kart for our entry into this year’s Power Racing Series event at the Orlando Maker Faire. During last year’s event we found the old kart to simply be too big, too unwieldy, and too slow. Our aim with the new kart was to improve on these three aspects. First, a new frame was designed and welded together. WE salvaged certain parts of the old kart including the steering system and drive shaft but upgraded them with a full wheel in the front (instead of the old handle) and a 48V brushless motor (instead of the old 36V Brushed one). We hoped that the increase in voltage and switch to brushless would allow the kart performance to stay the same or increase while also increasing our run time.
Speaking of run time, we decided to build a custom battery pack using some li-ion 18650 cells purchased on ebay. That pack was assembled using the Vruzend DIY battery kit. The kit worked fantastic and after a few days we had a new battery the gave us the 48V with increased capacity to help achieve our goals. Importantly this battery only needed one charger vs our last which required 3 batteries to be separately charged and took quite some time.
After selecting our tires and other miscellaneous parts we were able to assemble the kart and begin testing of the system. This is where I discovered a plethora of issues and oversights that ultimately means the kart will be remade.
The frame is too long. Due to its length the turning radius is also too large ad wont be suitable for the style of track it’ll be raced on.
Motor Gear Ratio