I have the large Flipsky 80100 motor. It stays very cool, is very large, and is well built. Problem is, it can theoretically run at 148 amps for motor current max. However, the Vesc Tool truncates the motor current max setting to 120 amps and the absolute maximum current to 160. I have a Vesc 6 so it should be good for well above that. Any chance we could raise the software truncated limit? Thanks for this great software! I've been using it for some time now and love it.
These are values set as maximums in the firmware, if you upload the `no limits` firmware versions you should be able to set higher current limits. This will however lead you to destroying your VESC if you are not extremely careful.
Vesc6 can only measure up to 160A. The current limits are set for a reason. Pushing them will only lead to damaged hardware.
Great info, guys. Thank you. I was not aware of these firmware limits. When you say Vesc6 can only measure up to 160A, are you referring to the physical hardware of the Vesc that cannot measure above 160 or the vesc firmware installed on the Vesc that cannot measure higher? This is confusing to me because there are many "Vescs" out there, including from Trampa, that indicate they are good for well over 200A continuous. I am using a Vesc 6.0 from Maytech but I have another newer one from Flipsky that is based on newer hardware of Vesc 6.X. I am not looking to put myself in danger, but I do want to understand exactly where the limitation lies so I can maximize my motor's potential.
Many thanks for your responses!
RaygWorks
Physical hardware. Some people have chosen 160A as the max their hardware can read, some choose 400A. It's all in the current sense amplifiers and current sense resistors.
Plus I think your 80100 is probably only 60A cont, with peaks of 150A. You probably want a 200-300A ESC for it.
Ok cool. Thanks for the info. I'm checking with the manufacturer to let me know what their physical hardware is capable of. I think you're in the ballpark for the 80100 motor. Max is 148. I think 50-66% the max current should be a safe continuous range. But I have actually been setting it to 120 continuous and 160 max in Vesc tool and the motor itself has not been getting hot. Barely lukewarm in fact. The 200 amp Vesc I'm using is getting quite warm, borderline hot though. I keep losing power after I run it at 60 battery amps for a short period. The VESC is cutting current to limit it back to about 42 battery amps. Any idea how to calculate how many motor amps you get from the amount of battery amps you are using? I am having a hard time reading through the internet to get a straight answer. The sqrt of 3 seems to be involved though.
RaygWorks