This all bids more questions??? I have run the QS138 70H V3 motor almost exclusively. With the EM150SP/2 for smaller bikes and lots of EM260SP/2 and EM260S controllers on the full size bikes. I am dabbling with the FarDrivers now, but no real experience yet. I have never overheated the motor. I have been stopped on the track with Controller overheats, I have not been able to recharge the battery because it is overheated (you can look in the BMS), but never the motor. A lot of us have this combo with the same overheating problems. We cool the controller and it all runs, we have made mods to the battery and it all works fine. I am not a pro rider, but I ride the bike pretty hard, many of you have seen some of my YouTubes (Donald Cox KTM) And others have ridden them hard, but no overheated motors. We have had Pro riders push the bikes and no motor overheating.
I know Mark at XEMX1.com quite well, and he is now running the X-9000 controller, and he is overheating the motors with his Pro riders and the rider for Electric Cycle Riders.
You, HadesOmega, have been overheating the motor also with the X-9000 What current are you running HadesOmega? Send us some info? We typically run 300-400A. I have a current line meter on most of the bikes I build, it is not logged, except on my Go Pro. (pic below)
I am not bashing the X-9000, I have heard a lot of good about it, but I know in the FarDriver, you can do some stuff with the phase angles. And I understand that in a 3 Phase motor the phases can fight and cause weird things in the motor, including heat. Also the windings in the motor could be too small for the actual current we are sending, causing heat. But I know Mark at XEMX1 has done extensive testing and engineering on his motors, and cannot get the heat under control yet.
I am sure I have raised more questions, but My next tests are going to be on a QS138 90H V3 watercooled, with a ND961200 controller, watercooled, with a 96V 81AH battery. Let me see where the heat build up is?
