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-   -   What is this BS Castle is feeding this customer? (https://www.rc-monster.com/forum/showthread.php?t=12029)

Fast5sRevo88 05.15.2008 12:53 PM

The MA pack is about 4-months old. It's a 5s 6000mah rated at 20c.

lincpimp 05.15.2008 01:08 PM

I am going to say that maxamps 5000 cells min for 4s, and their 8000 packs would be much better. I puffed a 5000 4s pack a revo with a MM. The trakpower lipos are holding up fine though. I would not suggest using the 6000 packs unless it is a 6s pack with a low (1500kv) kv motor, that is geared for 40mph or less.

phatmonk 05.15.2008 01:24 PM

Whats better a 4s2p 6000 or a 4s 6000 battery?They are both maxamps batteries.

lincpimp 05.15.2008 01:30 PM

Quote:

Originally Posted by phatmonk (Post 173141)
Whats better a 4s2p 6000 or a 4s 6000 battery?They are both maxamps batteries.

All of maxamps 6000 packs listed on their site are made up of the 3000 cells in a 2p config. I am not aware of any 6000 cells that maxamps has.

Sower 05.15.2008 01:38 PM

Well, they said anything over 15C, so you should be good.

sleebus.jones 05.15.2008 01:45 PM

15C in itself means nothing. You have to have an MAh rating to go with that. I'd look for 75A or greater continuous capacity. If you can do that, you should be fine.

phatmonk 05.15.2008 02:03 PM

My MA 4S2p 6000 pack says max continuous discharge 125 amps.And my Neu 1515/1.5d is rated at 120 amps.Sooo exactly what does this mean?:whistle:

bl-is-future 05.15.2008 02:28 PM

Quote:

Originally Posted by phatmonk (Post 173157)
My MA 4S2p 6000 pack says max continuous discharge 125 amps.And my Neu 1515/1.5d is rated at 120 amps.Sooo exactly what does this mean?:whistle:

It means you need MORE POWER! No just kidding, the battery can put out a constant 125 amps to the ESC. So if your battery rating is lower than the ESC rating it will not work very well. Ex... a constant 20 amp battery will not work on a MMM very well. Will stress the battery too much and possibly cause fires, explosions, and/or bodily harm.

The motor rating i am not sure of. Maybe the max amps it can pull or take from the ESC?????

bl-is-future 05.15.2008 02:34 PM

to run a 15c battery you need at least 5000mah. That is exactly 75amps cont.
Just use this formula - (c rating * mah) / 1000
If it equals 75 you are good to go!
The higher the number after the formula the better, but not always necessary.

BrianG 05.15.2008 02:42 PM

I don't get what the fuss is all about all of a sudden. A small problem with some MMM BECs and suddenly it seems people are questioning everything they know about BL in general. The rules haven't changed with just a new ESC.

Amperage draw is solely dependant on the motor, vehicle you are using it in, and supply voltage.

Overkill I know, but for the sake of example, you could conceivably install the MMM in a Rustler with a light-duty motor, geared conservatively and you wouldn't need a large battery. Current flow is determined by the load and supply voltage, not the ESC. Period. The ESC is simply a "controlled energy funnel". If the MMM is used in such a way, it will obviously never have to work very hard.

OTOH, if used on a large heavy vehicle like a 5th scale, geared high, you will need batteries capable of high energy output, so high voltage AND high capacity AND high C rating.

Joe Ford 05.15.2008 02:43 PM

Gents...the higher the C rating the less resistance in the pack and the cooler the pack will stay under the same amp load. Minimum of 4000mah and 20C is my recommendation. Obviously, the higher the capacity or the C rating, the better off you are.

phatmonk 05.15.2008 02:54 PM

So whats the C rating on a 4s2p 6000 MA lipo battery?It says 125 continuous
amps on the battery.:whistle:

bl-is-future 05.15.2008 02:54 PM

Quote:

Originally Posted by BrianG (Post 173171)
I don't get what the fuss is all about all of a sudden. A small problem with some MMM BECs and suddenly it seems people are questioning everything they know about BL in general. The rules haven't changed with just a new ESC.

Amperage draw is solely dependant on the motor, vehicle you are using it in, and supply voltage.

Overkill I know, but for the sake of example, you could conceivably install the MMM in a Rustler with a light-duty motor, geared conservatively and you wouldn't need a large battery. Current flow is determined by the load and supply voltage, not the ESC. Period. The ESC is simply a "controlled energy funnel". If the MMM is used in such a way, it will obviously never have to work very hard.

OTOH, if used on a large heavy vehicle like a 5th scale, geared high, you will need batteries capable of high energy output, so high voltage AND high capacity AND high C rating.

Exactly! Well said!

xtremelimits285 05.15.2008 02:57 PM

Quote:

Originally Posted by rhylsadar (Post 173020)
i just take this quote as an example.


i wouldn't be too fast with a judgment. RURC may have a kind of a 'special' way to express himself sometimes and that may easily sound 'arrogant'. however there is no doubt that he has lots of experience and from what i read for years in the rcu forum his informations are mostly not bs but rather correct. maybe he didn't get it exactly right this time. idk but it has been stated here again that lower quality batteries may cause a problem for the esc. so the basic message isn't that wrong. and he is sure not just some trashtalker that knows nothing.

btw of course it was possible to build a brushless 8th scale models many years ago. it just wasn't as popular as nowadays. i do not have that long time experience but when i got my first converted savage in 2003 there wasn't much talking about brushless monsters on any internet platform. and i have no doubt that there were some people out there that already converted some trucks or buggies before 2000. so a guy like RURC may easily have around 10 years of experience.

bye
rhylsadar



i know he knows stuff....ive read older post of his too...

but he kept saying all maxxamp lipos wont work with the MMM..:oops:
and flat out said ployquest(enerland) packs are junk..lol:lol:
he hasnt used them in a year an said they wont work with the MMM...
he said u need 40C lipo or ull fry ur MMM:lol:

he said he has been following the thread...
IF SO HE SHOULD SEE 50% ARE RUNNING MAXXAMPS(20C) IN THERE 1/8th scale Conversions, AND 50% ARE RUNNING POLYQUEST/NEU(ENERLAND cells)25Cor30C...
this is with Mamba Maxs an a few other esc's..



i layed off him but he needs to get cought up, an See that most people killing there MMM, are running the same combo/car/motor/gearing/ an same GOOD LIPOS that can do 75amps cont.(if not more)
An were all running fine(some cant make 20mins or are overheating there esc's).....


btw he told everyone he had a 300Amp ?shulets? esc:lol:
lutach asked for some pics, an RURC is ignoreing him:lol:



Quote:

Originally Posted by sleebus.jones (Post 173152)
15C in itself means nothing. You have to have an MAh rating to go with that. I'd look for 75A or greater continuous capacity. If you can do that, you should be fine.


YES, if u have batterys that can do 75A ull be fine:yes:

dont run any maxxamps smaller then 4s 5000mah(thats the limit)...
4s 6000/5s 6000(should be fine just dont push them, dont set acc.limit under 20% for safety, id set it at 40%-50%-60% or 70%) u dont need under 20% ull just wheelie anyway)
3s 8000/ 4s 8000, are good(5s 8000 are good but a bit to heavy, only good for long speed runs)....

As for Neu/Tracpacks/ Polyquests/ Enerland cells
4s 4000+/ 5s 4000+ / 6s 4000+ 25C (will work fine)
4s 5000/ 5s 5000 / 6s 5000 25C (will work fine)
4s 6000/ 5s 6000 / 6s 6000 25C (will work fine)

4s 4000+/ 5s 4000+ / 6s 4000+ 30C (will work great)
4s 5000/ 5s 5000 / 6s 5000 30C (will work great)
4s 6000/ 5s 6000 / 6s 6000 30C (will work great)

NEW 35C / 40C / 45C lipos comeing will be the best to use with the MMM
as we car run smaller packs an make 20 min mains.:yipi:
PLUS u will beable to have a 1/8th scale land missael:gasp:

bl-is-future 05.15.2008 02:58 PM

Quote:

Originally Posted by phatmonk (Post 173180)
So whats the C rating on a 4s2p 6000 MA lipo battery?It says 125 continuous
amps on the battery.:whistle:

around 21c

(6000 * 21) / 1000 = 126 amps


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