doh. figured this out. turned of uart accidentally. xD
Actually my naive understanding Iād expect zero vector frequency to increase heat in the ESC, but should I expect it to increase heat in the motors?
Welp, i got almost the same track times on v5#1 (vesc) as v5#3 (castle). Then somehow I beat them both on the SRB super spine #1 with a single hobbwing 70125 motor and hobbwing ESC. thatāll make @MoeStooge grin. 
This past week the weekend session didnāt work however I got a session in last Wednesday.
I didnāt end up using all the motor amps (150/side) peak was 130A. and battery peak 54.5A (on one side. for some reason robo was back recording single side. )
It still felt a bit slow to deliver power out of a corner. but since i wasnāt maxing motor amps, this could perhaps be something throttle expo tweaking could fix.
of more concern, it felt a bit like the throttle ran on a bit sometimes when you let off. So Iām going to try swapping out the OSRR/uart remote for a GT2B so itāll be more the same as my v5#3 castle setup.
Track sessions are a bunch of 2 - 5 min run, before pausing.
temps were not bad. and cooler than the street run temps.
Motor temps got up to 73c (161f)
Esc temps up to 46fc (115f)
v5#1 (vesc) 33.06s
V5#3 (castle) 33.03
SRB SS#01 (single motor, hobbywing max) 31.74
SS#1 has 45A rear tires, vs 50A i was running on the other two boards.
TL;DR;
throttle feels funny. switching out OSRR / uart for. GT2B/pwm for next session.
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an update. itās not goneā¦ still there on the bench just perhaps not as obvious. still need to back out the zero vector/switching victory change to see if that changes the behavior back. still a fw5.03 problem which iām still on for reasons stated above.
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Throttle still feels funny.
However, @MarioChacon rode v5#1 with the full size g2tb and said he didnāt notice.
I Didnāt notice as much I think itās because the track layout held more speed with less acceleration this time.
I observe two things.
- doesnāt feel as initially punchy.
- if I do punch throttle hard it feels like it runs on more than i expect.
for #1 I used to assume it was max motor amps. but I havenāt hit that in the last two sessions (150A/side) again because the tracks have carried more speed, not hair pin to straight punch. and also I have to warm up to riding so hard Iām really punching and braking every line.
for #2 Iām thinkinga bout what @Titoxd1000 said. āthrottle in the castle setup is duty cycle modeā. throttle in the vesc is current control mode. so current delivery is different between the two. and while Iām trying to get used to them both. Iām definitely preferring the feel of the castle.
in curernt control mode, vesc watches the current and adjusts the dutycycle to hit the target current.
in duty cycle mode, castle just sets the duty cycle according to throttle position.
I suspect in duty cycle mode throttle the current draw tapers off as the rpm reaches the target rpm of voltage * duty_cycle * kv so relative to that current contorl mode would feel like current continuing to push on.
ok too many wordsā¦ blah. check yes if you like Moesha
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Wed night,
Mario shreded me on v5#1(vesc, no binding) vs my v5#3 (castle) but i didnāt get racechrono of it.
he also straight shreded me on the super spine single.
i didnāt really warm up. excusesā¦ lol.
| me V5#1 | me V5#3 | mario on super spine |
|---|---|---|
| 33.61 | 32.66 | 29.72 |
didnāt push new amp heights. more flow less slow corners into straights less aggressive riding.
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And this is exactly why people street face when they ride the first time lol
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i slightly disagree here. people street face because they come from 3-5kw boards to a 12kw board.
the difference in these two throttle approaches is a lot more subtle. took me a while to even consider it as the difference i was feeling. and Iām not 100% sure ā¦ itās just a guess.
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I can see your point of view but having ridden a stooge on punch 7? I find it way harder to control than vesc (obviously Iām not used to it)
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āpower level 70ā roughly translates to max duty_cycle 70%
and, I can see your point as well. the control is definitely different. and my first observation ā1. doesnāt feel as initially punchy.ā
Iām now thinking this is perhaps because the current control mode on vesc is basically indirect. you give it throttle input. it translates this to a target current, then the PID control loop adjusts the duty_cycle to achieve that current, then monitors current and adjusts dutycycle some more.
with duty_cycle throttle on castle, presumably itās much more direct.
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yup turns out they are 173kv. sense made.
thanks @Skyart @Tony_Stark, Reacher for labeling these. @Evwan for mentioning it.
@Tony_Stark I assume the 173kv motor means the motor can handle 12% more amps than the 153kv. Iām still running 150A/side. above your recommendation (120A) but short bursts track use been ok so far.
and I havenāt gotten back to hard pull tests, been figuring out the remote issues mentioned above so i havenāt hit more than 130A/side anyhow.
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from another thread. off topic convos about throttle difference between castle and vsec.
This definitely power turned down. and brakes are often turned way down and with a negative throttle curve to avoid twitchy braking at high speeds. you donāt often brake quickly on street setups. overbraking on street boards is a thing tho when somethign sudden happens. this tuning on the stooge boards was to avoid that with all the sudden acceel and braking in hard track riding.
the braking setup like that is just by convention of how moe set things, and riders not changing what they got used to. itās pretty dramatic difference from our ususal setups so i can understand this feeling.
which is why i continue to work on my own familiarity bias whilst feeling these things out.
ramp times are down to nothing. (noted above)
also not yet playing through throttle expo. which is the next thing people mention.
as at full punch it doesnāt make a difference. but i suspect it will even out some of the PID lag at low and mid throttle. based on feedback from others. but i suspect it can be some of the more laggy response feel.