If I understand correctly, you math is right, the PWM in the first case is 6512Hz or approx 6Khz.
But it doesnt work out for some ESC. A Castle Hydra 240 ESC needs 12khz PWM for the CC/Neu 1515. And a Schulze 40.160 ESC likes the 9 to 19khz setting for a 4 pole motor. Neu motors recommends 11 to 13 khz on their motors. Something isnt right. Either its my math or its the formula. Not sure which. But I would welcome something to use a rule of thumb. Otherwise I'm going to stick with the manufacturers recomendations.
But it doesnt work out for some ESC. A Castle Hydra 240 ESC needs 12khz PWM for the CC/Neu 1515. And a Schulze 40.160 ESC likes the 9 to 19khz setting for a 4 pole motor. Neu motors recommends 11 to 13 khz on their motors. Something isnt right. Either its my math or its the formula. Not sure which. But I would welcome something to use a rule of thumb. Otherwise I'm going to stick with the manufacturers recomendations.
John
I've never ran anything other than 8k on an inrunner (Including my 1515-1y) and they've all ran well. I'm not saying you're wrong, but I dont understand why you would need 12k on a Neu 15 series motor...or why you would run a completely different PWM on one ESC than you would on another.
Still, I would start with the manufacturer's reccomendation. If that works well, then run it. This formula would come into play more when you have a motor that you don't already have info on. For example, my suppo 2200kv 6 pole motors in my EKOS (2200x6x18.5/20). For those motors a good starting point would be 12k.
I found this formula on another forum. I was researching "outrunner mode" on my castle ICE ESCs as I suspected it being a possible cause of excess current draw in my EKOS. It was posted by a castle creations rep as a guide for people who had no idea where to set the PWM, and he stated that he hadn't come across a conbo that didn't work well with this formula. I can't confirm that, as I just found this info myself, but I will be trying it out with my current and future setups.
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