Hey, I'm new to the forum. I'm looking to buy the Trampa VESC 100/250, and it says on the product page that the controller is rated for 100V max, and that "Voltage spikes may not exceed 100V!", but I'm really not sure what that means. I'm not sure how I would go about figuring out whether this controller is suitable for the motor I have. I have a VEVOR 72V 3kW BLDC motor that goes to 4900RPM... and its pretty big in size! What would be the best way of figuring out whether that will or will not induce big enough voltage spikes to fry the controller? Thank you. 
(motor will power a rail speeder)
The battery should be 22S max, fully charged at around 92V max. If you go that close to the peak voltage, the a battery cables should be short and thick enough.
If you stay below that voltage, you are fine spike wise.
Thanks man!