I recently bought a motor from RCJuice and after about 1 battery pack it stopped working properly. It is ok under a light load but when I give it a heavy load it cuts out. I put my original motor back in and everything is fine again. I contacted RCJuice and was told from the owner that I can return the motor but if a motor is found to be overheated then it will not be covered. He says a motor will never overheat from being defective but will be damaged from overheating. I have a background with industrial applications and have experience with motors going out. Almost any reason for a motor to go out will cause it to overheat. If it has a bad winding, a short in the winding, a bad bearing or anything causing vibration in the motor it can overheat and fail. Even a cold solder can cause the windings to overheat ( the smell gives it away). I will go as far as to say I can not remember ever seeing a motor go out that did not overheat on the way out. I understand that sometimes people abuse things and overheat motors and cause them to go bad but a brand new motor that goes out would be safe to assume it was defective. I explained to him that if this is his policy then he is denying a lot of valid claims, probably even most of them. This is when he stopped replying to my messages. I am out $80 for a motor that was bad pretty much from the start. Simply put he will probably not warranty a motor that you buy from him. I won't buy from him again and wanted to put this out so you can make your own informed decision.