Now I understand "Puff"

[mikiek]

I sorta thought that might have been a term someone made up but in fact it is quite accurate. I'm about ready to hang it up. Who has this kind of luck? And it has been 1 week today since the Zelos arrived.

The boat went up in smoke this morning - literally. Was using 2 Admiral 5000mah, 6S, 50C batteries - first time with these. Plugged them in the boat and about 10 seconds later, POOF a puff of black smoke A few seconds later 2 bright flashes that looked like they came from the ESCs



The batteries were brand new. Charged on my "smart" charger. As always there was a small spark in the connector when I plugged the 2nd battery into the boat. All the components in the boat are still OOB. I'm guessing the batteries SHOULD HAVE been plugged directly into the ESCs instead of the harness? The instructions are not clear on this. Another moron mistake

Damages look like a melted spot in the insulation of one of the batteries. Another melted spot on the harness to the ESCs. One last spot on a wire coming directly out of one of the ESCs (between the harness and the ESC). Of course that's just the visible stuff. No telling what happened internally.

So, not sure where to go from here. At this point I'd rather focus on picking up the pieces. Short of plugging in another set of batteries (just kidding) how do you determine what parts are good and what's not? I need to determine what needs to be replaced.

Along with that, do I replace with the same stock components or with upgrades.

[stratus]

ohh man that is to sad,with 6s yes you go directly with the esc.It is mentioned a lot of times to be honest that this harness is only for use with 2x3s batteries,what you did was to try and run the boat with 12s :/ For sure your escs are toasted,for more details wait for a more experienced to pop in

[Mxkid261]

I don't have a zelos but I believe the Y harness takes two 3s packs, wires them in series for 6s, and then feeds that "one pack" to each motor. If you indeed hooked up two 6s packs with the series adapter you just hooked 12s to each ESC and cooked them. Don't get discouraged, these things happen when you're new to the hobby. Most everyone here has let out magic smoke one way or another. Bummer when its a simple mistake like that though.

[mikiek]

Bummer when its a simple mistake like that though.

You are right about that. Maybe more like a stupid mistake.

Any suggestions on replacements? I was thinking ESCs and maybe motors, but then realized I might even need to think about receiver and servo as well. For the cost of the OOB parts I could just about buy a new Zelos.

[Mxkid261]

Motors should be fine

[fweasel]

FWIW, puff refers to Lipo battery packs that begin to swell from abuse.

[Fluid]

Don't hang it up! New ESCs should get you going, it is pretty sure that they were damaged. Please just make certain you understand how to plug the packs in correctly next time. We were ALL rookies once.


.

[vinnyp]

Mike,
Sorry to hear of this. These things can be confusing to beginners like us. If you take a look at page 5 of the manual that came with the Zelos it states

The included battery adapter allows you to operate your
boat with (2) 7.4V or (2) 11.1V batteries. You can remove
the adapter if you choose to run lower voltage to each ESC.
If you choose to run (2) 7.4V or (2) 11.1V LiPos for each
ESC, 4 batteries total, we recommend the DYNC0028 to
series your LiPos together before you can plug them in to
each ESC.
4. Connect the battery pack connector to each of the
adapter’s EC5, or to each ESC EC5™ connector

What confuses me is that the instructions state " you can remove the adapter if you choose to run LOWER voltage to each esc. " What if you want to run higher voltage?
However.... there is a yellow warning tag attached to the 'y' adapter that states " Do not use this adapter with more than 3s lipos. Damage will occur"

With that said, a pair of 6s lipos with the series adapter may not have been a good idea. Don't get discouraged. Keep at it.

[mikiek]

So I guess basic rules of thumb

Using 2 3S (or lower) plug them into the OOB harness
Using 4 3S (or lower) use the series adapter and plug that directly to the ESC; basically 2 batteries per ESC
Using 2 4S-6S plug directly to the ESC; 1 battery per ESC
Using 4 4S-6S you're an idiot

On the replacement front - any point in getting something other than the OOB ESCs? I see OSE has one that appears to be equivalent. Any comments on that?

One other thing - I know one of the 6S batteries I used this morning is probably toast. The cable insulation is melted. The other one shows no visible damage. Should I toss that one as well? If it has a problem would it possibly damage the charger if I plugged it in just to see what the charger thinks about it?

[ray schrauwen]

I'd love the cooling blocks from your burnt ESC's.

[ray schrauwen]

Puff. puff give!

FWIW, puff refers to Lipo battery packs that begin to swell from abuse.

[mikiek]

FWIW, puff refers to Lipo battery packs that begin to swell from abuse.

OK - I'll buy that. But it sure was a puff of black smoke. Almost like the little smoke bomb fireworks. Just a small, thick, black cloud. Followed by a bit of lightening.

[mikiek]

The new ESCs arrived this evening. I am replacing with identical components. Not real easy installing them. Most of the leftover wiring on the boat looked OK. I did replace the stock harness with a new one. Everything else I am leaving. It's all back together again but I did not start it up. Not in the mood for fires tonite

I'll go back to the 2 3S LiPos and the harness just to try it.

I thought I had to loosen up the rudder servo and cables, turns out I did not but I'm having those cables unraveling and they are difficult to get into the attachment on the servo arm. May want to get a spare of those and do some hard soldering to keep the strands together. Do they have a wire replacement for these cables?

[fweasel]

No, Proboat does not sell the cables by themselves. Twist them back into shape and treat the ends with something to keep them from unraveling again. I kept cutting my knuckles on the tips, so I cut small 1/4" pieces of silicone hose, shot them full of hot glue, and slipped them over the ends.

I would make sure your new ESC's are programmed properly, the most important setting being timing as I'm unsure what they're set at out of the box. I'm fairly certain, but not 100%, that the Zelos comes set for 7.5* timing. LVC should be at 3.2V, battery selection can be set to auto or 6S.

[mikiek]

No, Proboat does not sell the cables by themselves. Twist them back into shape and treat the ends with something to keep them from unraveling again. I kept cutting my knuckles on the tips, so I cut small 1/4" pieces of silicone hose, shot them full of hot glue, and slipped them over the ends..

Was wondering if someone sells an upgrade cable similar to the OSE prop cable. I've already had to cut off a few strands because they jammed up when stuffing the cable into the fastener.

I would make sure your new ESC's are programmed properly, the most important setting being timing as I'm unsure what they're set at out of the box. I'm fairly certain, but not 100%, that the Zelos comes set for 7.5* timing. LVC should be at 3.2V, battery selection can be set to auto or 6S.

Good idea. Would not have thought to check that. I'm hoping to get a few laps in this evening.