Making an esc better?

[supralover72]

Well, I can't give you a price as I don't know what specs you want, but if you email or call Castle and tell them your serious about buying custom made ESC's, tell them it's for the caraction speed record challenge, you need so many for the team (that would allow for the group buy) and that your willing to pay whatever, then bargain to what you see fit.

[IBJAMMIN]

Originally Posted by BrianG

I'm surprised some engineer at Castle hasn't thought of a modular ESC idea. That way, they can use the same brains board, and just feed the signal to as many power boards as needed. Would be a little more pricey at first to come up with a modular unit, but would cut their costs on the long run. That is assuming their firmware/software was totally upgradeable like the MM...

Do you mean like this the CC super 300. :032:

[BrianG]

Sort of, but I'd want a heatsink for each layer. :)

[tom255]

I think they dont heat at all in our standard Car setups. Avarage draw about 30-40A ~10% from Nominal

[GriffinRU]

Brian, when I was talking about 6 wires (stand-alone brains and output stage), I was thinking about sensored setup... While with sensoreless system it would be difficult to create reliable system if motor feedback wires would be long. It is possible to buffer them and use line drivers or twisted pairs, but that would be not a clean and simple solution. So I will put brains close to output stage.
Meanwhile, mambamax conversion is in process, updates will follow.

[zeropointbug]

We will be waiting for some good results Artur! :027:

[BrianG]

Originally Posted by GriffinRU

Brian, when I was talking about 6 wires (stand-alone brains and output stage), I was thinking about sensored setup... While with sensoreless system it would be difficult to create reliable system if motor feedback wires would be long. It is possible to buffer them and use line drivers or twisted pairs, but that would be not a clean and simple solution. So I will put brains close to output stage.
Meanwhile, mambamax conversion is in process, updates will follow.

Yeah, I can see wire length of the feedback path being a problem. Probably would have to resort to some type of balanced and/or shielded feedback cable. I figured there would be a way to use one brains board, and then stack power boards under it to get the capacity needed.

[GriffinRU]

Getting close to the testing stage...

Mamba duplex Side A and Side B.

New Caps, extra heatsinks in between boards, transorb and couple mods ESC.

CC change their design a little bit, painful to take apart and solder quality looks not as good as used to be...

Plan to finish by sunday and start testing next week.

[BrianG]

SWEET! Are you going to make any software changes while you're at it? ;) J/K.

Awesome job! Looks better than some other manufactured ESCs. Hopefully it works once it's all put together.

Artur, good luck with the testing. If all goes well, you're going to have to come up with a price for the mod. LOL

[zeropointbug]

DANG! Artur, that is smokin! Those are some monster caps on that thing... I LIKE IT! :004:

What kind of current rating are you giving it? 180A?

BTW, I still have the brains of my burnt Quark, it has some residue on it from the fire, but it might still work. You want it?

[GriffinRU]

Thank You,

To Brian: I do not have tools yet to change software inside ESC, maybe later.

To AAngel: On success I will publish step-by-step process. Otherwise depends on demand. Maybe even get some parts from CC...

To Zeropointbug: Ratings will come later after testing, Blown ESC's are always welcome. :)

Uh, oh. I feel a digikey order coming on. LOL

[GriffinRU]

Well, final touch side A and side B.

Video (7.91Mb) from first run. So far no problems.

[suicideneil]

The brakes certainly work well, and no sign what so ever of cogging- even though it isnt hooked up to a drive train obviously but still. Whats the next test- 12 cells I guess.

Q. Did you ever findout how manu cells a HvMaxx will run without going pop? 18 cells would certainly be a nice bit of speed, provided the motor bearing could hold up.....