"Fried" AQ esc

[Plasticman]

Help! Just installed new AQ bl ESC and Feigao 540 6S bl. Single 8 cell NiMH battery.
Boat ran for couple minutes, stopped, got it going again. Motor was cool but ESC was very hot. Got it going again same thing. ESC was so hot the neg insulation melted. ESC no longer works. BEC still works. ? bad ESC or bad motor that fried the ESC. Any suggestions.

[rockwerks]

Specs:
-Forward:Yes
-Brake:Yes
-Continuous Maximum Current:45A
-Input Voltage:Minimum 10V, Maximum 21V
-Momentary Peak Current:55A
-BEC Voltage:5.8V

8 cells is not enough power to correctly run the esc. thats only 9.6 volts.............you need to run 2 6 or 7 cell packs

[Diegoboy]

Feigao 6S
5915kv
108A
-----
SV ESC
Continuous Maximum Current:45A

[eboat]

6S 5915kv
8 cell X 1.2volt= 9.6

So 5915 X 9.6 =56784 RPM

56 784 RPM is alot more than 45 amps that the esc is rated for

[Meniscus]

You're in VA Plasticman?

[Meniscus]

Richmond?

[Plasticman]

I'm new at this so perhaps I don't understand. The Aquacraft ESC info says 8-14 cells.
The Fiegao 6S info says 4-8 cells. If I'm underpowered with battery why would it burn up the ESC. Does this motor need an esc with a higher amp rating

[Plasticman]

Yes, Richmond

[Plasticman]

Any suggestions for a compatable ESC.

[ghostofpf1]

Feigao 6S
5915kv
108A
-----
SV ESC
Continuous Maximum Current:45A

What he said...

Ghost

[Meniscus]

I believe that if you identify what hull you are running (to determine size constraints, weight, etc.), any prop info you have, and your intentions (any info that you are thinking of for the future), many of the users here could make recommendations.

The more information you can provide, the more there is to go on so that you can make an decision based on various options you have now and in the future for any purchase you make.

[Flying Scotsman]

Any suggestions for a compatable ESC.

Sir, your problem is the total RPM.....26,000 Sport boating.......34,000 SAW.

Your motor is toast

Douggie

[Darin Jordan]

Any suggestions for a compatable ESC.

First off... what type of boat are we talking about here??

For Monos or Sport Hydros... 25,000-35,000 RPM
For Hydros (riggers)... 35,000-40,000RPM tops...

And those higher ends are RACE ONLY type setups... 1 1/2 minutes or so tops...

With that motor, you'll want to drop your cell count down to 6-cells...

That'll be approximately 6-V under load, so around 35,000 RPM or so....

You should be able to run that with a Barracuda 80 or equivalent ESC, but you may want to just opt for one of the 100-amp cheapos out there, or step up to a Hydra 120 and give yourself some room...

OR, since you may have fried your motor anyhow... get yourself a 7L or 8L and you can keep using your 8-cell packs...

[Eodman]

Did he say he ran it on a single 8 cell pack?

[Darin Jordan]

Did he say he ran it on a single 8 cell pack?

Help! Just installed new AQ bl ESC and Feigao 540 6S bl. Single 8 cell NiMH battery.

Yup...

[Flying Scotsman]

It is very interesting to note that newbies only enter their problems after a failure of expensive equipment.
It is so important to list your proposed equipment, prior to installation with all pertinent information and ASK for opinions!!
A Douggie rant, as I hate to see people leave the hobby because they did not understand the dynamics of FE boat racing......no we are not the same as FE car racing.

Douggie

[rockwerks]

Did he say he ran it on a single 8 cell pack?

yes

[Meniscus]

Notice to all! Contact Doug before you install anything! Get a second opinion!

Just kidding, you do have a very valid point though. I hate to see it too, but what can you do, most of the time, we're dealing with the "male" psyche and we inherently say to ourselves "I know what I'm doing..."

...then

(knocking on wood, or at least balsa)

[Eodman]

Hell if I knew what I was doing I'd still be in the Corps .... well maybe not at 57!

[Doby]

People that think they know everything are upsetting to those of us that do.............

We have all fried our share of equipment,,,,,I know I have..

[Ub Hauled]

I'm new at this so perhaps I don't understand. The Aquacraft ESC info says 8-14 cells.
The Fiegao 6S info says 4-8 cells. If I'm underpowered with battery why would it burn up the ESC. Does this motor need an esc with a higher amp rating

the Aquacraft can handle up to 18v, not that you should but it could.
BUT it's only 45 amps like it was stated many times above...
it's a miracle to me that it ran as long as it did... the boat probably never went up to plane properly did it? If you are running anything other then the stock aquacraft motor, you'll need a way more powerful ESC... maybe you can tell us what you are planning in running (or are running) and then suggestions can be made and examples can be shown so you'll have a solid running boat in no time.

[Flying Scotsman]

People that think they know everything are upsetting to those of us that do.............

We have all fried our share of equipment,,,,,I know I have..

I have more than fried my share Doby as well and I am still learning big time, thanks to the the experience of those who push the envelope.

Douggie

[Plasticman]

Thanks guys! Yes experience comes with mistakes. NBD

[Plasticman]

Is it any way I can check the motor to see if it's "fried"

[Darin Jordan]

Honestly, I think there is a decent chance that the ESC acted as a safety fuse and the motor is likely just fine... If it doesn't stink from the windings burning, and never really got over 150-degrees or so, then it's likely just fine...

I don't know of any good way to find out, asside from inspection, and testing it...

[Ub Hauled]

I have a hacker 6s that I overheated once and it took the abuse without any noticeable damage...
still performs like it did before, so yes (like Darin), there is a chance that it can survive... it'll depend on how well it was assembled and how hot it actually got.