Quark fried, blown capacitor...

[wallot]

ok thanks. so far everything seems ok but one never knows what quark will do :)

[Serum]

I wouldn't go crazy; the inductance might be a point of concern at a certain point?

[zeropointbug]

Wallot: I checked out your webpage... Is that a Silencer heatsink you have your Quark sitting on top of?! :018:

Serum: I'm not really sure on that. You think that would be a problem?

[BrianG]

Originally Posted by wallot

If adding CAP bank to ESC isnt bettter to add just one cap with higher capacity? like 2200uF? they even have lower ESR than thesmall ones.

One large capacitor has less surface area than several smaller caps of the same total value. This helps the caps shed the heat better. Also, don't forget that you combine the ESR values of several small caps just like resistors in parallel so the effective ESR will be about the same, if not lower, than one larger capacity cap.

So, to get 2200uF, you would need ten 220uF caps in parallel. Then, if each of those 220uF caps have 0.01 ohms of ESR, that would equate to 0.001 ohms total.

Smaller caps may be easier to physically install as they can be arranged in any formation to make it fit. The only downside to use multiple caps is the wiring hassle.

[MetalMan]

I took out my Hyper 8 with MM, Neu 1512 2.5D, Maxamps 4s 5000HV, and 4-cap bank. Unfortunately the cogging was still there as before, but it didn't seem as harsh as before when it did occur (which was roughly 50% of dead-stop pulls of the trigger). However, I DID notice a difference in temps - the motor seemed to be maybe 10deg. cooler, the battery was a bit cooler, and the MM didn't even feel warm (although this time it did have a small 25mm fan). I can play around with the ESC settings to see if I can reduce the startup cogging.

[zeropointbug]

That's interesting that your motor would run cooler, maybe it is switching from phase to phase more efficiently? Just a guess.

So i guess it does not help the MM with cogging the Neu motors, must simply be the software, and nothing but.

At this point though, it looks like it is for surely helping to reduce esc running temp.

[zeropointbug]

Well, I got my Quark back today, surprisingly fast. :003:

It is raining today, so no running. I took it apart and tried to look at the capacitor markings.... the brand looks like it's 'SANNHA' 'WB' series. I have never heard of that brand, and I can not find a SINGLE thing searching for it.

I think S&T are having trouble with 'Quality Control', my new Quark has a few near cold solders. And the caps have burn marks all around from soldering them on. The middle motor wire does not have solder on the top half of the pcb, not good.

So I was pretty dang close as far as guessing the measurements for my custom quark case. Only .5 - 1mm off hear and there.

I will fix all measurements and post a screenie of the quark case.

Hi Zeropointbug

i am glad your quark get back.

It's SAMWHA is korea cap's manufacturer.
the datasheet here WB http://www.samwha.co.kr/upload/CAT_E/list_pdf1/WB.pdf

[suicideneil]

Those look like very good caps (very low esr rating), though I wander what the rated voltage is on them- if its 25v maybe thats why they dont like 6s (until the power drops off from full charge a little)?

unfortunately !

Is 330uf/35V stock. can't support 6S is not Cap's problem!
since Quark esc is 5S max, i think they mistake data.
i am very sure.


so in korea local hobby shop they quark alway is
Cells : Ni_Cd 5~16 cell
Lithium 2~5 cell

take look here http://www.psyhobby.com/shop/shopdet...ch=&sort=order

[silentbob343]

Originally Posted by zeropointbug

Well, I got my Quark back today, surprisingly fast. :003:

It is raining today, so no running. I took it apart and tried to look at the capacitor markings.... the brand looks like it's 'SANNHA' 'WB' series. I have never heard of that brand, and I can not find a SINGLE thing searching for it.

I think S&T are having trouble with 'Quality Control', my new Quark has a few near cold solders. And the caps have burn marks all around from soldering them on. The middle motor wire does not have solder on the top half of the pcb, not good.

So I was pretty dang close as far as guessing the measurements for my custom quark case. Only .5 - 1mm off hear and there.

I will fix all measurements and post a screenie of the quark case.

Perhaps there has been an increase in popularity for the Quark controllers and they are having trouble meeting demand?

[zeropointbug]

Thanks Andy, they do look pretty good.

They are 35V, 330uF, and 0.0038 Ohm ESR Impedance.

No one knows what the problem is with the Quark not liking 6s LiPo. It could be alot of things, but maybe it's not enough capacity on the caps, just maybe. Has anyone actually ran 6s Lipo with 100% success?

silentbob343, maybe, it's a shot in the foot though really, for them, if something goes wrong with them. I sure hope this one works as it's supposed to. I wonder how much these would cost if made in the US, or Canada? :005:

Zeropointbug

i am updata #310

look http://www.psyhobby.com/shop/shopdet...ch=&sort=order

[zeropointbug]

How come that says 5s lipo? Is that in Japan, or Korea?

Also, why does it say 2-5% POWER UP turbo, what is that?

is in korea.