Recent content by Apal

hi, I′m building an electric go-kart with an hpm-5000b motor @48v with 11′ wheels and I got stuck on sprockets. I would like a ratio that could allow me to reach a max speed of 30mph so I calculated that I need a gear ratio of 4.118 (70 axle/17 c̶l̶u̶t̶c̶h̶ motor side) with 3700rpm. But when I...

Hello, I’m trying to build my first electric go-kart, but I got stuck with a dc contactor. Because I can’t find any suitable for my battery pack. My battery pack will have voltage from 60V to 87.6V, but I only found dc contactors that have maximal rated contact voltage at 80V, are those 7.6 more...