another v3 gone

[hoovhartid]

So...how many failures is this?

I think I've seen 3.

Bustitup Killed one.

Ryu James had his short on the heatsink.

and then this.

any others?

[e-mike]

all my 4 units run very well.....30 min on each....i will run each one today...just to add runtime....its seem that more a mmm have a runtime more its seem to be reliable


but i hope that im not gona use a mmmv3 for open a beer bottle....loll

[JerryF504]

Originally Posted by hoovhartid

So...how many failures is this?

I think I've seen 3.

Bustitup Killed one.

Ryu James had his short on the heatsink.

and then this.

any others?

Ryu James' problem wasn't a short on the heatsink. It was excess resistance in his bullet, from the looks of the burns probably because it came halfway unplugged.

Originally Posted by emaxxnitro

because if its rated for it it should be able to do it

exactly

[TexasSP]

Originally Posted by BL_RV0

Why is it that every one of these V3 failures has been a complete torture test of the ESC?

Agree with you on that. I see no reason to run everything as close to the limits as possible then wonder why it fails.

whaaaa whaaaaaa whaaaa...you like Chocolate and I like Pistachio



I like to drive my truck while its on fire...you guys like to drive your trucks while you knit sweaters

[BrianG]

Originally Posted by bustitup

whaaaa whaaaaaa whaaaa...you like Chocolate and I like Pistachio



I like to drive my truck while its on fire...you guys like to drive your trucks while you knit sweaters

Me and my sweater-knitting friends take offense to that! Some of the members knit far faster than you can drive!

[BL_RV0]

Originally Posted by BrianG

Me and my sweater-knitting friends take offense to that! Some of the members knit far faster than you can drive!

I had a double-take on your S/N to make sure it wasn't James that posted the quoted message!

[SpEEdyBL]

Originally Posted by emaxxnitro

yeah i was lucky! i had 6 2s lipo packs in the car! that would have been a ball of fire!

Did you say six 2s lipos in the car? Now that is just asking for trouble. How many sets of connectors did it require? And I assume you made 3 sets of 2 packs in parallel, which is the correct way to make 6s2p? I can easily see very bad radio glitches with that setup, and if the sudden stop was strong enough to unplug all of the batteries, then there definately was a flaw in securing your batteries. You can easily damage something on the esc if you pull perpendicular to the direction the MMM bullets are supposed to plug in and out, which easily could have happened.

Originally Posted by emaxxnitro

i was running my mmm v3 today on 6s 6000mah and a neu 1515 1y
i was driving fast brakes locked and stopped the batterys unplugged so i plug them back in and poof! smoke pours from the case. berne at cc said to send it directly to the engineers. so i hope its a fluke!

If you were in full brake when the battery connector came unplugged, then it probably blew some FET's when that happened. Then you plug it back in and poof here comes the smoke. The voltage generated by braking has to go somewhere, without a battery to dump it into then the controller takes the brunt of it. Battery coming unplugged on a heavy vehicle during a full brake is usually bad.

Originally Posted by castlemike

Battery coming unplugged on a heavy vehicle during a full brake is usually bad.

gotta Agree with that one. What connectors did you use?! I have trouble taking mine off some times!!

mike, what if castle made some cool thingyy that lit up or made cool noises, or spin something durring heavy breaking.........well i tihnk itll be cool

[killajb]

I still find it fascinating that at least two of the 3 failures came from more demanding usage beyond the norm. I agree that an esc should perform according to(and right up to) spec, but for what everyone has gone through with the MMM V1 and V2 it's pretty wreckless to push the limits with the V3.

Well.. If I had a ton of money to play around with and simply didn't care what happened then I'd go right ahead and experiment. Is that the case here?

Originally Posted by killajb

I still find it fascinating that at least two of the 3 failures came from more demanding usage beyond the norm. I agree that an esc should perform according to(and right up to) spec, but for what everyone has gone through with the MMM V1 and V2 it's pretty wreckless to push the limits with the V3.

Well.. If I had a ton of money to play around with and simply didn't care what happened then I'd go right ahead and experiment. Is that the case here?

well I don't have a ton of money but i do have more than one truck to run and plenty of motors and mm's so I have have to answer yes to your question of seeing what it will handle right off the get go...if I only had one rig hell yes I would be more cautious for sure

[skyler]

Isn't the whole idea of producing a user friendly system for the general public supposed to work comfortably within it's spec? They are releasing this system in an e revo and many people new to bl will buy this and say cool it can run 6s and will run it at it's limits and I really cant blame them at all for that. CC will even warranty the esc if it blows within spec, that itself is saying something about the manufacturers stance on the issue of runnning it at it's limits. That is, it should still work at that range without blowing.

[Dagger Thrasher]

Sorry to hear your MMM's died, but it seems to me that it's just as Castle Mike has said; if a battery lead comes unplugged during braking which it appeared to, then it'll probably fry any ESC. I don't think the MMM is at fault here; sounds just like just bad luck.