ok im getting started on an electric go kart and im pretty stoked. i just have some things i need to clear up on. i am going to run 48 volts on a 36 volt golf cart motor, which is what the golf cart was running on before i took it apart. i now have the batteries, motor and old controller (not solid state) out of the golf cart and ready to be made into a go kart. i am unclear exactly what controller i need for the best performance.
what i have:
36 volt series electric motor. cant find any info on it. all i know is that its rated around 2000 watts, 50 amps.
6 eight-volt batteries that are like 7 years old but still hold some charge, cant afford new ones.
old style speed control i wont need.
ebay has one controller that i think would work for my kart. it is rated at 48-60 volts with 60-100 max amps, and is made for less than 2000 watt motors. i'm unsure how it would work using it for a 36 volt motor with 48 volts. if the controller says 2000 watts or lower, does that mean just the motor must be rated 2000 watts or lower, or the actual power going to the motor (which will be higher with 48 volts) from the batteries? the amp rating on the controller seems high (up to 100) and its meant for 48-60 volts, so it seems like it would be good. but im just not sure if the controller would limit the watts to the motor or be overpowered and burn out.
im just confusing myself the more i think about it..its probably a lot more straightfoward, i just dont know how controllers and motors work with different power ratings