I wonder if the values are calculated (from mfg) are based on 100% duty cycle when the VESC is limited to 95% due to the MOSFET selection apparently https://vesc-project.com/node/169 at 95% a 140kv motor would be reporting 133 (so not quite the 119 you see but it is closer to right), same with the 190kv would be 180.5kv basically assuming we only get to use 95% of the voltage)
There are SO MANY factors that affect the KV of a motor, including but not limited to, temperature, variation in magnet strength, variation in magnet size, variation in lamination thickness, variation in interlamination varnish thickness, variation in air gap, variation in flux ring thickness, variation in flux ring permeability. Any one of which could throw the KV off of the âexpectedâ value.
Also: Since the KV is inversely proportional to the turns of wire in the motor, itâs really hard to add E.G. 1/7th of a turn to lower your KV by an arbitrary amount.
Not to mention that the VESCâs built in KV testing method isnât ideal either because itâs using the motor itself to spin, which means itâs not accounting for the various parasitic loads such as bearings and eddy currents, so the âno loadâ speed isnât actually no load.
Hereâs my new Flipsky vesc. Itâs made very well. Aluminum case very solid. I love the look of it all black very sleek. The anti spark switch is mounted right on the box. The only problem is how to connect all your wires. They made a little access plate but, made no provisions to be able to feed your wires out of it
Why do you need to feed wires out of it? That case/design/board is waterproofed, so I wouldnât go drilling holes in it unless you need to. I was able to fit a remote receiver and a metr in mine, just take off the whole side panel and get creative.
That packageâs intention is to be waterproof, pretty much everything you mentioned is not great for a waterproof build. Usually someone buying this would have a good idea of what they were getting and why.
@b264 You plug your uart or pwm in and there is enough room for the wires to curl back into the case where there is room for the receiver(s).