Hello everyone much smarter than me in things with the volts and the amps and things.
First, some quick background:
I've built electric cars before through a highschool competitive team, but I was mostly in charge of frame structure, weight reduction, and aerodynamics. We used a 24 system with an etek motor and curtis controller, but we used simple Anderson disconnects as our on/off switch, and had nothing in the way of a precharge resistor (a shunt for a meter and brake lights, a fuse, and a throttle were everything else).
Fast forward to now: I am building an electric "flat track racer" with a curtis controller, and an etek motor (do what you "kind of" know) the controller I could afford can only run 36-48 Volts, and for purely aesthetic reasons I decided to run 48 volts (the bike is even with 4 batteries.)
The Questions: Can I use anderson disconnects as a "switch", and will a conspicuous lack of a precharge resistor fuse the connections together and fry the controller?
If i can use an anderson disconnect, but need a precharge resistor, any idea how to do this? a smaller disconnect with the resistor? I've heard you can use light bulbs for this.
I am trying to keep this build bare bones, but safety of course needs to be paramount. we never had trouble with our disconnect setup on a 24 volt system, but if I'm about to fry myself on startup, let me know!