Yep it is lol, its the one backfire sells with their flagships, bought it to use as a carry handle and just for the comedy factor
Photos of the complete setup from awhile ago here.
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Quick question, motors seem to run fine on acceleration and coasting, but under braking im getting some stutter, kinda feels like a slower and gentler ABS, any idea what could be causing that?
No idea. What a are you current settings? Also did you do motor detection with large out runner selected of medium?
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Whoops, i do recall running it on medium haha. So used to hitting that on autopilot, ill give that a shot in a second.
Current settings are 100A motor, 60A battery, 60A motor regen, 35A battery regen
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Settings seem good. Not sure what it could be
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Ill give it a shot with the large outrunner detection. Only other thing i can think of is that this battery is from a zeus pro, so maybe it cant handle the regen current? Even that doesnt make a great deal of sense though, as it ran fine with the flipsky’s.
Take a pic of your detection values
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Those look good. Make sure to adjust current values to what the ubox can handle.
Quick question, you mentioned that the erpm of 179kv would be around 120k, but in the vesc settings the default max erpm is 100k, is the spintend capable of more or?
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Not sure about the limits of spintend, vesc 6 is supposedly capable of 150k
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I definitely would make sure you’re running at least 30khz switching frequency if using FOC since those motors have 12 pole pairs and very high erpm. I believe after 30khz you need to jump to 60khz due to the way vesc takes samples, and then you may be able to go up to 150k erpm but I’m not really sure if hardware variations would effect this. Also make sure sample in V0 and V7 is turned off.
I’d be running those motors in BLDC with high switching frequency to be safe if it was me. I feel like vesc FOC is not ready for them yet
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do you think vesc BLDC (does that mean trapezoidal wave in this case btw?) is capable of 150k erpm?
Theyre 10 pole pair, not 12. Seems to be running fine for FOC operation atleast with my testing, although ive been keeping it light as i havent had a chance to replace the worn out baseplates on my build. Anyways, any possible downsides or issues to upping the sample rate
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It depends on controller hardware. Dual controllers on a single MCU may not be able to handle the higher switching frequency. I run 30Khz on single controllers right now with 6485 motors and it’s really smooth
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Yes you’re right. These have more slots than magnets, my bad.
It’s hard to know without testing it but if FOC can achieve 150k then I’d imagine BLDC could go higher than that. You should really only need around 100-120k for the 7490 motors though.
I’ve been meaning to test up to 140k erpm in BLDC but not ready to sacrifice a vesc and two 400kv stators if it doesn’t work out (not yet anyway😏)
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This is leaving out a lot of relevant details. These motors come in 265Kv, so a 45S battery running this would peak at over 420kerpm…
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45S Battery 
265kv 24s was an interesting idea to me
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