Quark is up in smoke.
 

Will I figure i would be the first to say.
I have fried the first quark.
I don't know what happened.
The esc got to a hotest of 121 today.
I geared it up some.
It normally runs about the 110.
It had a problem from the start.
I talked to mike and he said it was not right.
Well it really is not right now. Blackened esc any one?

Not a very good birthday present :( That stinks leroy, im sure mike will figure this out! The temps your quark was running are colder than my 9920.

Sounds like it was just a bad one,hard luck Leroy.

How do you mean 'problem from the start' Did it do anything strange?

It acted like 2 out of 3 phases was hooked up. It only did this on first plug up of batts. If you got it to go it seemed ok. It was accually a great esc. I loved it. It was smooth and stuff after you got it going. I just don't know what was wrong. I guess I am going to see how the customer service is now. I know mike has good but have to see about quark.

Hopefully they are good because I want to use them for my 18T when I go BL.

I've had mine up to 145*F after about 12 minutes with no thermal shut down yet. I have not run mine very many times yet though. I like mine so far too. I hope the customer service is good for all our sakes!

I heard from Mike, that they had a no complain, replace kind of warrantee..

Seems that brushless still is too fragile.

I think it was something from the factory. It did it from first time to the lastime it smoked. I find out. It is going out monday.

Just wait for the Mamba Max, and that should change things!

Isn't the Mamba Max for 1/10 scale though?

Theres gonna be 2 versions. One for stadiums, tc's, ect. and another for Maxxes, ect...

The one that's coming out on Monday is the 1/10 version. The Monster version won't be out for a while still. I was merely commenting on the fragility of brushless.

I was just reading on another forum.
A guy had the same problem I was having on the quark 80b.
He said it was a problem with running 6s lipo.
Does any one else know if that is the case?
Will the 125 run on 6s lipo ok? I was thinking of getting another and see if it smoked but makes me worried not about doing it.

Maybe it's possible that even though it says it's OK to run to 6s lipo, the voltage (~25v) is a little too high or maybe very close (if not over) the FETs' safe working voltage?

Or, it could simply be bad luck. There are bound to be a few released that may have a bad component or two. These ESCs have a bunch of paralleled FETs for each phase and if just one develops a short from the drain to source electrodes, then it could pass enough current to burn out a few traces rendering the whole thing useless.

Well found out tonight.
I have a new 80b quark headed my way.
I get to see if this one will work right or go up in smoke as well.

May i ask why you went with a 80? The 120 just seems alot safer imho.

I have very low amp draw so no need for a 125 version.Only got the 80 up to 120 f. In a 40 min or longer run. I think it says something about the amp draw. The motor is only rated for 26 amps. :D

Yea, but always nice to run cooler than cool! Hehe! :):p

Sylvester, why waste money when a 80 is already more than enough?

What are you running it in? Cant be a MT with that low a draw.

Yes, he's running it in a MT.

wow. whats the setup thats its that efficient? I heat up my 125 pretty good. I cant imagine only running a 80....

It was a XL1200 so it ran really cool.

Maybe to install the ESC in another vehicle someday...

I have the mgm 24160 for other projects. I have a 18.97 schulze for other projects. I have a 36120 sent back to bk for other projects. I have 2 9920s at bk for other projects. Why would I need to spend more money for a few extra amps.

I may change motors for the motor was running warmer than expected.
I am going to go with a xl can but with a hi turn. I will have to let you know how it works out.

If I go with some 8000 mah I should get 90 -120 mins of run time.

Because it seems that almost all those ESCs are at BK. ;) Seriously, it was a reason, but apparently not a good one in your case. :)

What is wrong with all your 9920's Leroy?

Well accually i have one 9920 let the smoke out.
the other is a 7020 that let smoke out and getting upgraded to a 9920.
The 7020 still worked but the capacitors swoll up and smoked. So it is getting an upgrade for it.

That means, you only have got a schulze up and running?

That's odd.. :p

He's just lucky I guess....lol

I have a mgm. I have had good luck with them so far. So i have the shulze and mgm to play with. I wish the schulze didn't have the delay in reverse some time. I have thermaled it a few times and it is still going. I have bashed and thrashed it over a year now. I think it is a good one. I have blasted it with 18 nimh and 6s limn to. :D

I got the new esc hookedup.
It still has a small glitch type thing when first hooked up.
I think it may be a quark problem.I didn't get to test it fully for my batts was not fully charged.

That's weird, I've never had any glitch or problems with mine. Maybe you are really unlucky? I'd try your other ESC(s) to rule out other components.

You run a 125 though If I am correct. It seems better this time.
I still running the same stuff I had with the 9920 and it did good.
spektrum radio system. It is only at start up when you plug batteries up and try to move for the first time. The esc got to a balmy 85 degree f after 6 mins. I don't think that is to bad.

Yeah, mine is a 125B. I also am running a Spektrum system and a UBEC. However, fearing that the power from the UBEC might be "noisy" I added a 1,000uf 10v capacitor to help filter the power. I also added a switch so the UBEC has time to power up and settle down before I switch the power to the receiver. Maybe those things make a difference?

85 degress is not bad at all. My 125 got to 120 degrees in my cool (~65) basement after about 1/2 hour. When outside it gets hotter so I added a heatsink. Much better now.

A heatsink does wonders for esc's. My 9920 was running around 135-140 and after i put a heatsink on it the temps were 105-110. Leroy, those temps arent bad, but than again that was on 6min of runtime, it might get a bit hotter on a full run for sure.

I have to test some more. I not sure what the problem is. I guess I have to let quark know it is a problem. I think it is the esc though brian. Two esc three motors and all was run with no problems before. I have to let you all know what happens. I may see smoke again. I would try 5s lipo but I don't have a 2s pack.

A little off the topic here, but would it be bad to run a 125B when you not putting that much juice thru it? For example, let's say you have a controller that can handle xxx amount of juice, but you only run a little xxx amount and want to beef it up later with more, can you still run a high "grade" controller witha low grade motor and batts? i hope you can figure this out coolhand, it gets me worried that people are having some probs with the quarks latlely, i really wanted one but think i'll wait...

I wonder if they have different stuff in the 80 version from the 125. Maybe the fets have a lower voltage or something. It sure don't like to work right. It is only on first hook up and go though. I may try a reprogram and make sure or not if that helps.