I just scored myself a crazy cart, currently it is modified and runs a 36v controller and 3 12v sla batteries. It was modified by a previous owner, I believe this one is a series 1 or 2.
The first day I got it, it was great. Went to ride it today, and it seemed incredibly sluggish, almost didnt move me forwards. I'm 70kg and this is just a regular crazy cart (not XL) running a standard motor that has been recabled. It smells like burnt copper now, so I suspect the motor has burned out.
I'm now looking for a bit more speed, ideally 30+ km/h and enough torque to get me up some 15 or so degree inclines, as it really struggled to pull my weight on even a slight incline. I was thinking about trying to go for a 36v 1000w motor, so I could still use the existing controller and hopefully just have to upgrade the motor, and possibly get some better sla batteries, as the current one's amp hours are terrible (something like 5ah).
As I'm new to this modification scene, any advice, tips or guidance would be fantastic! Looking forward to many happy runs on the crazy cart. Even on the 15 minutes of use I got out of it, it was a heap of fun.