Kinetic/Ballistic Systems

[BrianG]

Novak, I totally understand your predicament. Many companies are, shall we say, "optimistic" in the their ratings. So, Joe Sixpack looks at two ESCs and brand A looks better on paper because it is rated 1000A. Of course, he doesn't realize that the claim is ridiculous, nor the fact that no motor will pull that kind of current on a regular basis (aside from instantaneous bursts) in a normal setup, not to mention 1000A is beyond the capabilities of just about any normal battery. As I'm sure you are aware, there are many other factors that affect current rating aside from pure FET specs: circuit design, amount of copper, wiring, heatsink area, etc.

Honestly, and no offense here, I think a certain company has the right idea when they rate their controllers as "more than you can handle". As long as the ESC can handle any motor in its class and is used properly (no s-size 6000kv motors running 2s in an 8th scale truggy), it will run fine.

Also, I'm surprised no idiot has tried pulling that 540A on a test bench to see what it would do. I'm pretty sure that would result in a melted controller and an attempted suit for false advertising. Again, I am not dogging on you, just trying to watch out for one of the few US companies.

[NovakTwo]

In the arena of car racing for which we have designed controllers, both brush and sensored brushless, I have never seen, (or read about on forums), any interest in current rating specs.

If anything, about the only spec racers have ever been particularly interested in is on resistance. I'm just speculating here, but maybe these current rating specs have been valued and emphasized more in controllers for air models or non sensored controllers. Especially a few years ago, when European/Asian esc mfgs started re-purposing their airplane controllers for surface vehicles.

Personally, I would be just as content if we deleted all these numbers in our esc spec chart. If the rated/braking current numbers were once meaningful, they no longer are. Years ago, when we began listing only the MOSFET stats, it was because our engineers could never figure out how other companies' garbage ratings were measured; so we selected this alternative method.

[BrianG]

Originally Posted by NovakTwo

In the arena of car racing for which we have designed controllers, both brush and sensored brushless, I have never seen, (or read about on forums), any interest in current rating specs.

If anything, about the only spec racers have ever been particularly interested in is on resistance. I'm just speculating here, but maybe these current rating specs have been valued and emphasized more in controllers for air models or non sensored controllers. Especially a few years ago, when European/Asian esc mfgs started re-purposing their airplane controllers for surface vehicles.

Personally, I would be just as content if we deleted all these numbers in our esc spec chart. If the rated/braking current numbers were once meaningful, they no longer are. Years ago, when we began listing only the MOSFET stats, it was because our engineers could never figure out how other companies' garbage ratings were measured; so we selected this alternative method.

Well, the majority of people probably don't care about the current spec as long as it works without overheating when geared reasonably in the vehicle it was meant. And trying to rate them to match other companies' overzealous methods is just bring you down to their level.

[nitrostarter]

Originally Posted by NovakTwo

In the arena of car racing for which we have designed controllers, both brush and sensored brushless, I have never seen, (or read about on forums), any interest in current rating specs.

If anything, about the only spec racers have ever been particularly interested in is on resistance. I'm just speculating here, but maybe these current rating specs have been valued and emphasized more in controllers for air models or non sensored controllers. Especially a few years ago, when European/Asian esc mfgs started re-purposing their airplane controllers for surface vehicles

I can agree here. I just got into the world of Sensored 1/10th scale systems. The first question I was asked was about the resistance on the controller...

[lutach]

I have an idea. I'll make some phone calls and send some e-mails. It will be good if everything I have in mind works out.

Edit: Two e-mails sent and I'll wait for a reply, but will also make 2 phone calls tomorrow.