Yes that will definitely cause some issues at higher currents. Solder or crimp is far better for cables.
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What do you think of bullet plugs? @Jezza , what do you use for a quick release from the box, or do you connect your motor to vesc permanent? It would be nice to have a detach point for setup and travel to the beach
I use bullet plugs on most of my builds. On full efoil I tend to use 6mm for phase leads and XT150 for battery connectors.
On assist builds with the 6384 I use MT60, MR60 or 5mm bullets for phase and XT90S for battery.
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Sorry for the language. It was translated with Google.
Hi Tolson, I’m having the exact same problem with my Flipsky 75200 / 6374 system.
Have you found a solution for this yet?
.
In my case, too, it only reaches a maximum of 29.5A and approx. 1500W. I’m getting a top speed of 8.5 km/h. The performance is absolutely unsatisfactory, and I don’t know why this is happening.
I’m hoping it’s just a setting I’ve overlooked. I’ve provided my data here for reference.
Hardware:
Flipsky ESC 75200
Flipsky 6374 Motor 140KV
Flipsky 4.8" Foldable Prop
Flipsky VX3 controller
DIY 14S 8p LiIon Akku JBD BMS 80A (60A gedrosselt)
VESC Tool:
Motor :
Konfiguration per Wizzard 2KG Outrunner
Motor Type: FOC
Sensor Port Mode: Hall Sensors
Max. Wattage 4000W
Max. Bracking Wattage: 4000W
Battery Voltage Cutoff Start 47,60V
Battery Voltage Cutoff End 43,40V
Max. ERPM 100000
ERPM Limit Start: 80%
Motor Current Max: 80A
Motor Current Max Bracke: -80A
Absolute Maximum Current: 150A
Battery Current Max: 55A
Battery Current Max Bracke: -55A
Max. Duty Cycle: 95%
Duty Cycle Current Limit Start :100%
Controller:
APP to Use: UART
Set motor current to 120A, Abs max to 180A battery current to whatever your batterry can supply. But 55A seems extremely low for your stats.
It’s not your ERPM if you have it set to 100000 (this was one of my first mistakes)
Here’s my thoughts:
1 Your “current max” is set to 80. That’s likely the issue. I have mine set to 140 now and absolute max at 225. That is more than enough power for me. You have the slightly smaller motor though so maybe 160 would be better.
2 Your battery current is low at 55. I have mine set to 100. Not sure this is the issue, but it is probably contributing. My guess is the “current max” set to 80 is the bigger issue. If your BMS model is 80a does that mean your max output for the battery is only 80 amps? I’d set battery max to 100 if you can, but not sure with that BMS limitation. Definitely set the phase current higher to 140 though. Phase max and Battery max are not the same from what I hear (not as smart as the crazy smart people on the forum who have been doing this for years)
3 If you find the vesc is still acting up, try a new one. I’ve killed 2 vescs so far. The first one died almost immediately. The 2nd about a month ago. I just got a different vesc - Makerbase 75200. I sprayed it down with ACF-50 (the Canadian version of Corrosion X) before taking it out on the maiden voyage, and it seemed to have better thermals and had no issues at all. I think I killed both of the previous vecs with tiny water ingress (hopefully solved now). But they also didn’t work as well right from the start as this one. I’m also running the same prop as you now. That prop is a steal at $50 for aluminum folding. Not sure how it compares to a more expensive model, but it works.