FlipSky Dual FSESC4.20 Info/Review

FOC… But no I have never gone full throttle yet… Again my testing has been more cruising… But people seem to have cutouts even at lower throttles?

guys. is FOC able to give smooth roll off from stationary on sensorless motors?

Unfortunately no, there will be some cogging still. Not as bad as BLDC however.

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Just to make sure, you have 38 bat max on each esc or total (19+19)?

Does anyone know if Flipsky is trying to right this clearly incorrectly advertised product? I understand it’s an inexpensive alternative to the 6.6 and the Unity - But it’s being advertised as something that it’s not.

Has anyone messed with upgrading the caps to see if it resolves some of the cut-off issues?

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It’s not incorrectly advertised, it definitely supports up to 50a per motor (battery amps).

I really dont get why so many people are down on this. Its literally the cheapest dual VESC available, yet people expect it work like a FocBox. If you want FocBox performance, then buy a FoxBox.

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It seems wrongly advertised to me with the up to 60v compatibility while simultaneously stating 50a continuous. I’m not saying I expect it to be a Focbox or Flipsky 6.6, but it seems this box doesn’t like to run much above 38a at 9-10s.

I’m just saying I think they should change their claimed specs, leave the price.

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The caps on this 4.20 are the same as their single 6.6. People have been saying good things about the 6.6. Their single 4.12 is good too. So not sure what they changed to make this dual 4.20…

@BruSkater

Yep. all settings are for each motor.

@mtuan293

The caps are very different.

6x 220uF on the 4.2 and 6x 470uF on the 6.6.

The single 4.12 has 3x 680uF so has more than the total of the dual 4.2 on a single.

I should clarify that I have added 4x 470uF capacitors close to the FSESC as the negative battery cable is quite lengthy in my setup. runs nearly the completed length of the wheel base.

I have not tested whether the board acts differently with less capacitors at 38 amps.

@mutantbass

My experience is that BLDC needs a push to start but FOC stutters slightly and then starts moving.

But I am 240 pounds and when my brother who is closer to 180 pounds rode the board with my old setup of a single 4.12 in BLDC he was able to get the board moving from a complete stand still with no cogging at all.

so weight is a huge factor.

I know adding sensors will make it a hell of a lot smoother but have not had a chance to use sensored motors as yet. although I have 2 here waiting on my next build.

I’m talking about this:

Continuing the discussion from Flipsky 4.20 DRV8302 error, but still working?:

i didn’t realise the single one only had the 220uF capacitors.

A new one.

I hope they made it better and not only add antispark… @mmaner any chance you will get it for tests from them?

I kind of doubt it, they like to spred the love :grinning:.

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Hehehehehe they should :slight_smile: You gave them good review and they are using it on their website. They shouldn’t expect that some one will order it for science. @BarbaraZ are you the right person to make it happen?

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when I see the new character down I hope it does not FAULTS anymore…

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I would be slightly worried they went from 1,320uF capacitance down to 880uF so they could fit the anti-spark switch.

A single 4.12 VESC has 2,040uF. Wouldn’t such a reduction add a lot more noise and make it more unreliable?

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At 10s 60a it should fine. Just remember these are mid-range speed controllers, they aren’t high performance. Cruisers only.

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Hi Noob here, I’m waiting for mine to arrive. Questions, is the rf receiver for the remote built on to the board or will I have to buy a flipsky remote with chip? Or can I just buy the receiver chip by itself as I have a couple of those remotes from my wowgo/ meepo days. Lastly what size jst connectors are used for the hall sensors, number pins and pitch etc? Want to connect esc to wowgo hubs. Thanks

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