That could be the cause of your issues as you have the kv to high for the battery you should be using those on a 6s-8s build and your motor amps are higher then the 100a it is rated for your current setting can be a total of 160a. So you could be experiencing the issues going up a hill because your motors are not giving you enough torques to get up the hill and you are probably experiencing sag on the pack while going up hills with your setting. I’m actually surprised that you haven’t blown the vesc if you did balls out flat road speed test.
Thanks @mmaner for doing a well educated test with this vesc and giving a great honest review for people who are on the fence. I have been looking at this or the 6.6 dual.
Is that the erpm limit of 60k of vesc4? If so, I pulled full throttle no load several times and it reached 70k ish in vesc-tool but nothing happened, so did I damage the vesc?
Well I haven’t pulled full throttle on the road yet…mostly riding at 25km/h (15mph)
Are those current settings for each of the vesc, or both of them combined? You said you use sony vtc6 in 10s2p and it has 15A max discharge per cell, so I assume you’d set 15A for each of the vesc?
What firmware version did you roll back to?
I purchased a Flipsky Dual 4.2 last Friday… Got the following email last night… It seems they know about the issues and are warning purchasers…
Dear customers
Thanks for order our dual FSESC4.20, Just kindly reminder that:
Due to two phase design, the ESC has strict requirement on parameter setting. If not match well, it will cause over-current cut off during hard brake or hard accelerate for about 0.2s, but after 0.2s it will recover the power.
Pls cautiously consider your order. In order to avoid any after-sale service trouble to you, we’ll wait for your final decision reply to ship or not!
Here’s our suggestion for the setting , it’s verified no such problem in this setting.
10S battery
Motor Current Max: 30A
Motor Current Max Brake: -25A
Absolute Max Current: 130.00A
Slow ABS Current Limit: True
Battery Current Max: 30A
Battery Current Max Regen: -25A
DRV8301 OC Mode: Current Limit
DRV8301 OC Adjustment: 16
Its been said more than once in this thread but go for the FSESC 4.12. I’m using them now for some time (at least 500km) without any failures at 10s and up to 45A/-10 battery and 50A/-50 motor in a dual setup without any issues. I even build me a 2s booster pack going 12s without problems (I can’t tell that for long term usage since 12s is too much for me, my board goes 61kph with that :D, I’ll use it limited to 50kph for battery extension) You can get them for 50€ at ebay including shipping
I feel like it is user error that have been the cause of some of the issues as not being set up properly @mmaner knows how to set up a board to get the most out of it and I feel like there can be a few faulty units but I think it is mostly user error as these seem as a very good alternative I would really like to try out the 6.6 dual.
Hey, Just did a small review on the FLIPSKY Dual 4.2 VESC, if you are interested in checking it out the link is at the bottom
Just wanted too put it out there with a few of my own words, for a dual 4.2 vesc its defiantly been a great product to use and l will tell you my pros and cons
Pros:
Dual means that I didn’t have to stuff around truing to housing to separated items and link them, they came linked and stayed as 1 block and was easy just to put it into my housing as such
There Cheap (~$230 AUD), that is still a lot but its pretty much the price for 1 Focbox, so defiantly a bonus there
shipping was less than a week with DHL Express
Cons:
Currently has issues with 12s configuration (from what lam told)
if you loose one side then you pretty much loose the whole vesc as it cont be replaced if they were separated
Personal l didn’t have any issues with setting it up and haven’t had any since, did what l need it to do and still dose
I am using FSESC 4.20 in CARVON EXO.
Cutoff occurred at motor -35A.
Cutoff occurred frequently at -50A.
Now I am trying at -32A.
There is no particular problem in others.