Quark fried, blown capacitor...

[jhautz]

Originally Posted by zeropointbug

You know what you should try with the Quark:

LiPo high mode and dynamic torque setting, this makes it seem crazy powerful and responsive.

Easy now.... Let him run it for a day before he blows it up again.:005:

[zeropointbug]

Originally Posted by jhautz

Easy now.... Let him run it for a day before he blows it up again.:005:

:005:

mah, he's got the caps on there, that should save his bacon :027: :027: :007:

[jhautz]

I don't know... Aangel has a special talent. :007:

Hey, everyone has to be good at something. I wouldn't say that I have a talent for breaking things. I'd say that I have a talent for finding the weak points in equipment.

I'm not going to mess with the torque setting. I like it the way it is. I'm over all of the break neck torque stuff. With the 100,000 diff fluid in it, it still wheelies on demand and you have to watch it in the dirt. As for the lipo setting, I programmed it for manual and set the cutoff to 3v per cell. Even though I did this, will setting the lipo to high do anything?

I'm running a Spektrum DX2.0 radio and I can't get the truck to creep. It just kind of starts off at a roll. If you can creep around with the 7XL, it may have something to do with the gearing. I'm sure that I'm running a larger pinion than you are with the 9XL, so for every revolution of the motor, my truck should cover more distance. I'm not saying that I dislike it, it was just an observation. I need to get it out on the track and see.

The last time I was out on the track, a few people commented that they liked the way that the MM ran better than the Quark. From what I've seen so far, I'm inclined to agree. After all of this, I may still wind up with a MM/Lehner combo after all. To each his own, I suppose. If Castle releases the "fix." I'll have a couple of controllers up for sale.

The funny thing is that I ran it for a few minutes. I took a temp on the case of the Quark and got around 115F. I took a temp on the top plastic cover of the Quark and got 130F. Go figure. It didn't thermal on me, so that's good.

I need to remount my esc. Right now, I have it on a plate that double as the center diff plate and the heat of the motor is sinking from the motor mount to the esc mount, so I don't know if the heat is coming from the esc, or the motor. I'll have to turn a couple of standoffs and mount the esc plate to the standoffs and bolt them into the existing engine holes and see what the temps are like.

If this Quark takes a dump, I think I might have to take a ride over to S&T and have a talk with those guys.

Oh, I forgot to mention, they did warranty it. It was a case of no news is good news. They sent me a whole new controller. I didn't even open it up. I didn't want to take a chance on anything. I just wired up the cap bank and added the connectors.

zpb, where are you with your Quark? Have you built the cap bank yet?

[zeropointbug]

No, I have not recieved the caps or the Quark. They sent out a new Quark w/ Pro-BEC free of charge AND without me having to send in my piece of charcoal...

My gearing was 18/51 single speed tranny, it went very slow... but like you said, it doesn't matter a whole lot because these things look much better moving at speed. :027: I did have narrow nuetral band on too though, maybe that helps low speed creep?

What you said about finding the weak spot in equipment...so true. Seeing as we are still far within the rated specs of the Quark, they should easily be able to handle it. (maxx's, revo's) I can't even imagine what would happen to it if we DID run it at 125A continuous?! :002:

I am thinking I will put some 5mm plugs on the Quark and tap the input leads there with the cap bank, and solder two wires into the plug? what do you think?

My only problem with mounting the cap bank was getting it close to the pcbs. I tried soldering connectors to the pcbs and then using these connectors as junctions for everything else, from the cap bank to the power leads. What I noticed was that the weight of the connectors on the pcbs made me nervous. I just removed a spot of wire insulation from the power leads and directly soldered the wires for the cap bank there. I then ran the power for the bec and fan from the leads on the cap bank. I'll see if I can post a pic of what I did.

OK, here are some pics of my current setup. It isn't real pretty. I just wanted to keep it simple. I don't like the fact that the fan is so high on the chassis. I'm going to do what I said in my last post, but drop it as much as I can. I'm not so much worried about the COG, as I am about landing on my lid and messing up my fan. LOL.

Anyway....








BTW, that's a 1/4" thick piece of aluminum between the cap bank and the Quark. It is bolted to the 1/8" aluminum plate that is serving as the center bulk top plate. I added the fan because it was just sitting there and it wasn't much to pop an extra couple of 3mm holes to mount it.

[Serum]

Careful with that ferite core that sits on the power leads..

Serum, can you elaborate? What should I be taking care not to do?

Oh, are you talking about it possibly shorting out on the motor leads? If so, I'm going to go ahead and put a piece of shrink wrap on it. Thanks for bringing that to my attention. I hadn't even thought about it.

[zeropointbug]

That looks stellar man, I love what you are doing with these cap banks! I should have got you to make me one when you shipped it out. :027:

If I can't find anything to make a solid bank like that, I might just use shrink wrap, with that many caps, they shouldn't get hot.

IMO, I don't think that fan is doing anything on there, it might be better if you take it off and let air flow cool it, it might just be hindering it?

Anyways, I was looking at my burnt quark, and confirmed that the leads on the caps were vaporized.... some how? Check it out, I don't know if you can see it or not very well.

[BrianG]

Originally Posted by zeropointbug

Anyways, I was looking at my burnt quark, and confirmed that the leads on the caps were vaporized.... some how? Check it out, I don't know if you can see it or not very well.

Looks almost like both caps developed an internal short. :032:

[suicideneil]

Yep, I see that alright. I fell hungry looking at that.... toast for lunch I reckon. There must have been one hell of a surge/short/whatever for the leads to melt down like that.

As for the cap-bank AAngel, neat is only a word. You wouldnt know there were any on there if you hadnt said, just a mysterious block piggybacked to the esc. Nice work.

[snellemin]

that cap bank looks great. That fan is too big for my taste, but it's neat how how u attached it. I would of used a couple of smaller fans instead, but looking at your setup, it seems that you don't even need the fan.