Mamba Max FET Datasheet - RC-Monster Forums

BrianG · 04.09.2007, 02:38 PM

Very true Serum. It's like saying two cars are the same if they use the same piston.

We already know they behave differently, so the programming is obviously different. The Quark is much smoother, but heats up more than the MM. The Quark also seems like it has beefier traces and stouter construction. Don't get me wrong, the MM is a nice controller (especially for the money), but I still like the Quark better for larger vehicles. And let's not forget that the Quark can run pretty much any motor. The MM tries to cram as much circuitry as possible is a smaller area so thermal concentration will be higher.

Personally, the Quark would be THE controller if it had a better heatsink (or maybe just get rid of those stupid thermal pads), computer programming function, and lower price.

skellyo · 04.09.2007, 03:47 PM

Quote:

Originally Posted by BrianG

Personally, the Quark would be THE controller if it had a better heatsink (or maybe just get rid of those stupid thermal pads), computer programming function, and lower price.

And if it ran 6S like it's supposed to.

zeropointbug · 04.09.2007, 04:02 PM

Not everyone is having trouble with it on 6s, but yes, still it should be able to do 6s LiPo without issue no matter what.

BrianG · 04:12 PM

Quote:

Originally Posted by skellyo

And if it ran 6S like it's supposed to.

yes, I guess that too...

ZPB: Who isn't having trouble with the Quark on 6s? AFAIK, everyone has reported issues. The only time it seems to work is if you let the pack discharge a little so it's not at exactly 4.2v/cell.

I wonder what the result would be if you set the charging CC/CV threshold to something like 4.1v/cell or 4.15v/cell? Anyone want to donate a 6s pack for me to try? :)

zeropointbug · 04.09.2007, 04:37 PM

Really, I thought not everyone was having issues?

I wonder how 7s A123 pack would do? Same 25.2 volts at fully charged. However, you CAN use a 3.45 volts to charge, I think you get about 95% charge, and takes a little longer (3.45 float charge voltage), so that's 24.15 right off charger. But as soon as you discharge a little bit out of an A123, the voltage goes down to operating nom. volts instantly. I bet a 7s A123 might work fine.

It's basically a problem of discharge curve, and voltage droop of batts. If batteries had a very good discharge curve (like A123, or better) and very little droop, you would need less cells to get the working voltage. It's better for everything really...

Altair Nano cells are going to be 2.4 volts/cell, which is nice, gives you more voltage options. They also would last a lifetime, LITERALLY, they have put 10's thousands of discharge cycles on them at 10C discharge/10C charge, they retain over 85% capacity still at that point (16,000 was the latest figure)