Monster Max 8S plans?

[Dagger Thrasher]

I don't know about that, Lutach. If people treated true continuous ratings as burst, then they wouldn't be using half the ESC's potential. IMO that's a bit too conservative to be sensible, and besides..it depends on what length of time you define to be a burst. Just my opinion though, there.

I would love to see a ESC, battery, wires, connectors and most important the copper traces found in the ESC handle 120A continuous.

That's just it; the MMM can handle a solid, sustained 120A for any given length of time from what I gather. Patrick himself has mentioned their 120A bench-test they've done on MMMs; the whole shebang handles it.
Agreed on the KO ESC's ratings...they made me laugh when I read them. Obviously they're just FET-specs, but it's just ridiculous.

[lincpimp]

I have to side with Lutach here. You need a big wire to handle 120amps at 20v without it getting hot... And by handle, I mean continuously, for minutes...

[lutach]

Originally Posted by Dagger Thrasher

I don't know about that, Lutach. If people treated true continuous ratings as burst, then they wouldn't be using half the ESC's potential. IMO that's a bit too conservative to be sensible, and besides..it depends on what length of time you define to be a burst. Just my opinion though, there.



That's just it; the MMM can handle a solid, sustained 120A for any given length of time from what I gather. Patrick himself has mentioned their 120A bench-test they've done on MMMs; the whole shebang handles it.
Agreed on the KO ESC's ratings...they made me laugh when I read them. Obviously they're just FET-specs, but it's just ridiculous.

Try this test and gives us feedback: Get a airplane motor mount, hook a nice big motor along with a nice big prop, try to achieve 120A and keep it at 120A and see what happens. Just keep in mind some of the burst our vehicle see might be upwards in the 200A for a short burst on hard start ups. After the vehicle starts rolling that number takes a nice dive like the "Stock" market lol.

[Dagger Thrasher]

Originally Posted by lutach

Try this test and gives us feedback: Get a airplane motor mount, hook a nice big motor along with a nice big prop, try to achieve 120A and keep it at 120A and see what happens. Just keep in mind some of the burst our vehicle see might be upwards in the 200A for a short burst on hard start ups. After the vehicle starts rolling that number takes a nice dive like the "Stock" market lol.

I'm not suggesting that we use setups that have a consistent current pull that's almost at the limit of the controller; that would obviously be foolish, and asking for trouble. I thought you were referring to keeping *any* current bursts (including startup) below 120A.

Mynd's eye, that's fair enough, and it sounds like you really push your kit hard. If you don't mind my asking, what setup do you run on the Monster? And what MGM do you use? Castle aren't planning (that I'm aware of) any significantly higher-current controllers because very few people would need that capacity; instead, they're going higher voltage of people that need more gumption. A higher-voltage system in many of your apps would be much more efficient at even higher power levels, even if your MGM can take it. But then again, if you're happy with your MGM, just use that. Or, retrofit extra cooling to the MMM.

[myndseye]

Right now I have my Monsters on my buggy, truggy, and IGT conversions. The off-roaders participate in our enduro style races, and the IGT is an ultimate have fun car (great paint scheme, lights everywhere, aluminum wheels, and I paln on putting in the RangeVideo FBV (fly by video) system in so I can DBV. All three of these are similarly set up. Various Neu 1512's running between 3 and 5s but really setup for 4s. The hottest setup I have on a Monster is the IGT's with high gearing (Mike's 20T pinion) and a 1512 1D. Way past what any of you guys would ever consider, and arguably pushing the limits on paper. But these motor and voltage combinations never thermal, and it is mostly the batteries that are the worse for wear. Runtime is just ok, efficiency is lower, but the performance is unchartable. This level of performance is common-place within our group.
The setups that the Monster can't handle are obviously more demanding. My ultimate speed IGT2 has a Neu 1527 .5y with 30T pinion on 6s, run by the MGM 28025 and my MCD Race Runner has a 1527 1D run by the same MGM and the same 6 cell pack. The Monsters cannot handle the latter two, but only miss by minutes because of thermaling.