Hello from Springfield IL! I built my first ebike in 2017 and did it right with a Luna/Bafang BBS
HD mid drive with 20ah 56v big ass battery on a Mongoose gravel bike. That thing is no joke, top speed, 42mph! Still have it. Also had a Calibike 33C3 that got stolen. Last year I picked up a used Ariel Rider X-Class 48v that's my fave right now. Hope I can help others on here and I'm working another DIY bike (trying a Voilamart kit with Hailong batt) so my GF and I can ride together.