introducing new 1/8 120a car esc

[jsr]

Originally Posted by florianz

My question to the expert is: where the actual caps are soldered at, there are also little thingens between plus and minus of the cap. looks like a little resistor.

If you're referring to the brown/orange colored chip that we see a portion of in your picture with a glob of solder on it's end terminal, that's a ceramic capacitor.

One word of advice on adding caps that are off-board, use as thick wire as you can. The purpose of the caps is to supply energy during those high demand moments (chang in acceleration such as immediate acceleration or immediate decel (i.e. braking)). If you use thin gauge wire, the wire will limit the amount of current the caps can provide and get more resistive.


Lutach -

The 90A version doesn't look like it has caps on it. Are there any?

Also, in your opinion, how do these compare to the Hobbywing ESCs? The HWs seem to use good components (at least for their output FETs) and are soldered pretty well (albeit in a ginormous sized package).

[mikey09120]

if you look at the picture there is an external cpacitor

[lutach]

Originally Posted by jsr

Lutach -

The 90A version doesn't look like it has caps on it. Are there any?

Also, in your opinion, how do these compare to the Hobbywing ESCs? The HWs seem to use good components (at least for their output FETs) and are soldered pretty well (albeit in a ginormous sized package).

I don't know how they compare against each other. Both ESCs are somewhat new and both will see a fair share of failures. Only time will tell how they stack up against each other.

[zeropointbug]

Looks like this ESC was thrown together by a 10 year old. But if it performs and is reliable then if you wanted, you could make a custom case for it if you so desired.

[BrianG]

Originally Posted by zeropointbug

Looks like this ESC was thrown together by a 10 year old. But if it performs and is reliable then if you wanted, you could make a custom case for it if you so desired.

I have to agree. Well, the seperate boards look ok, but what's with the crappy foam spacers? Poor design IMO.

And the metal case does little to help cooling. It's attached to the heatsink, but that is the only contact it makes, and even so, it's too thin to be of much use if mounted on a metal chassis.

The power board looks similar to a HobbyWing, but the brains are certainly different.

[zeropointbug]

LOL, not offense, but the more I look at this thing, the more it makes me laugh. It just looks like the engineers were hired off the street, and given 1 week to design it.

[lutach]

They could've made a bigger version of the 90A to keep the same look going.