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You think the glitchy start like at the end of that clip would be my only issue? If that’s all it is I’ll keep running it. They’re 205kv 145motor 60 battery.
Yeah otherwise should be fine. You just have to make sure board is always rolling forward, and roll onto the throttle when starting. Definitely make sure hall sensor extra samples is turned up to 5 too.
Your board makes the exact same sound as mine haha.
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Sweet, I rarely try to punch it off the line like that. As long as it’s smooth coming out of corners im happy.
And yeah I’m loving the noise 
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so what other advantages does bldc give over foc?
Well at least compared to whenever I have tested FOC, BLDC seems to give significantly more power. Feels like an extra 20 motor amps and much snappier throttle response.
But not everyone has reported the same experience, and considering how complex FOC is, its certainly possible that the FOC settings I have are not extracting the most from my motors.
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Slightly more power, slightly higher top speed, much much better sound (IMHO). No HFI. Worse unsensored start from dead stop.
Probably zero testing by firmware developers.
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How well would a low KV motor startup in bldc mode? Better than foc?
Low kv - i.e. 120kv-150kv
Not well and not better. You can use sensors though
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You think the 20pole motor would be better? I’m using 135kv sensored on 24s.
I don’t have any power issues but wondering if what @Tony_Stark is describing (more power with BLDC) might be true with my setup.
IMHO BLDC mode is better for a higher Kv motor that you’re trying to get a sick sound from, and maybe squeeze a tiny bit more performance out of, and you don’t mind the infamous Hip Flick to get it started.
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Yes it is more about erpm than rpm. Higher poles will also help BLDC start at low speed.
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One issue I forgot to mention with BLDC mode and it is quite a big one that I haven’t been able to solve yet is if you brake hard at lower speeds its like the controller loses sync or something and it feels like the brakes suddenly drop to 10% and the board doesn’t stop unless you letoff and reapply with less brake input. You get used to it but its not good for gravel handbrakies or low speed emergency stopping.
Not sure if it happens on every controller or motor though
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For me the torque was the exact same with a little throttle curve modulation, but BLDC had sometimes unpredictable throttle application. You would get little extra power bursts that you weren’t expecting. Every once in a while it was as if you accidentally hit the throttle a little too much, except I didn’t press the trigger.
I went back to FOC because the power application was smoother/ more predictable. BLDC felt spicy and I liked the noise, but FOC is far better experience IMO.
@Tony_Stark I find that I can get the same neck snapping torque with FOC if I dial up the expo on the throttle curve.
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How much expo are you running? I’m at 10% and feels very lame compared to BLDC.
What it actually feels like is that there is a PID loop or something thats preventing the power from coming on quickly to prevent FOC from losing sync.
I can sacrifice this DV6 for science so I’ll play around with some FOC settings before abandoning it again.
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it’s quite curious you guys find BLDC to have more power.
It’s my understanding FOC was designed to eliminate the torque ripple of BLDC and eek more power output by being smoother.
I don’t discount your observations, but to tease: You guys just love the noise, the rest is placebo. 
make the noise I live for the noise!
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this is kinda a drop in the deep end, the whole video series is good if you have time for it.
but here in episode 9: they go from 6 sector block. to sinusoidal giving an idea of how to smooth out the torque ripple and get a more constant torque at all angles of rotation. My understanding is that 6 sector block is BLDC, and some of the various sinusoidal forms are what FOC is implementing
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but I guess this is not an FOC vs BLDC topic, which has been done before and has very similar opinions stated.
but while i’m on it:
I think bldc vs foc is not the issue, you can make foc much more aggressive by adjusting the PID gains.
– No, BLDC is not dead. | VESC Project
IDK if that guy on the vesc forum knows what he’s talking about, but if what he’s saying is true… it could just be that foc mode isn’t punchy as it could be. and that’s the difference. it’s the one that needs tuning?
also… @Tony_Stark seems to have sensed this pid tuning need. so maybe that is it?
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I feel like the expo setting can be pretty touchy. I like 20%, but i changed it up to 25% once and thst was too spicy. I was surprised by the difference of just 5%
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