4s MM
 

Hey guys. Im planning on using an MM in my T-maxx and stampede, 4s and 2s configs. I think ill run an 8xl in the T-maxx on 4s, so i was wondering what mods ppl r doing to run 4s on their Mamba Max's. thnx!!

Just remove the red wire.

On 4s, I would also run a ccbec...

i plan to run a ccbec, i 4got to mention. which red wire brianG??

I would read my Emaxx FAQ and skip to the parts about BL and esc modification...

Brian's website explains all you need to know with regards to wiring- you need to take the redwire out of the rx lead to disable the built in BEC.

The esc plug that plugs into your rx...remove the red wire, DON'T cut the wire, just remove the wire from the plug end, and you are good to go...don't forget to secure the wire in case you need it again

You'll need a heatsink and/or forced cooling with an 8 turn, maybe consider a 9XL and gear higher. I have run my MM successfully for almost 6 months (in a 14.4 pound truck) with no mods other than disconnecting the internal bec, (I use a receiver pack) and adding a fan to the MM, just so I never get thermals.

hmm, so i should shoot for the or 10 xl?? i have the perfect setup idea regarding the red wire, but are the servo plugs/connectors easy to find. i wana shorten the MM lead, then be able to use 2 diff extensions (with n without red wires) to work differently between my T-maxx and pede. So im getting that i dont need to install a cap? what rx packs would u guys suggest for a T-maxx??? thnx!

Personally I always add an extra cap - I had two blow up without caps - since adding caps all of mine have been fine... no other changes...

If it helps mike adds the extra cap to - it is only a $4 mod...

the extensions work well.

i wouldn't use a rx pack, i'd use a bec.

i'd add a cap, here's one http://www.rc-monster.com/proddetail...=35vcap&cat=21

so take out the internal bec and use the ccbec??also, where do i add these caps??

Close the esc as possible on the power lines...

Strip off a small amount of insulation about 1cm back from ESC on battery wires and solder in cap leads - again keep them as short as possible.

so i taps into the ESCs batt leads? should i take the cap off when using only 2s in my pede? do i really need a 10a bec? any others that r a bit cheaper? thnx

do you already have the esc? if you dont. i suggest just getting a mmm. you will end up spending just as much getting a mm ready for 4s when you could already have a mmm for the same price.

$35 and a good amount of space would be wasted. it'd have fit in my pede, and i would be tempted to go 6s

why not? its not the temptation to go 6s its the ability. :yes:
it is actually a almost the right size for a pede. all you need is a aluminum plate. and mount it where those 4 holes are for the msc servo are on the pede chassis. and mount the mmm to it, is the perfect size:yes:

this is an xl5 pede and idk what batts im using yet so i may need to do some hacking

IF you want to use the internal bec in the pede buy a short servo extension wire and remove the red wire. By doing this you can remove the extension when the esc is in the pede and still run the internal bec, but when it is in the Maxx you can use the extension to eliminate the red wire.

You can also use some micro deans so you don't have to solder the bec straight to the battery leads. By doing this you can use the bec in the Maxx, but you can have the option of not using it in the pede.

IMO these are the best ways to use one esc in two cars.

did u steal thos blueprints out of my brain?? uhg, now i think im going VXL with the traxxas motor in an mt2 on 3s and CC 4600 in my pede on 3s.

LOL, that is just how I use my MM in my E-maxx and my CRT.5.

lol, cool. what motors do u run??

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REVO FAQ is ok still

^^^link worked 4 me

I use a vxl motor in both for the time being.

i'd imagine ur going to get a bigger motor in the maxx? hows the .5?

I'm going to get a medusa for my E-Maxx. The vxl in the .5 is awesome, but it needs pretty tall gearing. I am using 12/46 (I think) and it is really slow (24mph). with 20/46 it will go 39mph.

cool, i might try to convert a kyosho DST

WOOO!!! Ok, just clarifying that an extra cap goes pos to neg on the batt wire of the ESC? I'm trying to convert a VXL system to 4s...am i a flaming retard? pls?! lol

Yea an extra cap does go on the pos and neg wire that go to the esc.

I'm selling a MM that the prevopus owner said did 5s fine. It has a novak cap. PM me for details.

4s is easily doable. I was running 14 nimh cells and the temps weren't too bad. It preformed better than my Quark did before it exploded for the milionth time.

PM sent, thnx traxxasbasher 4 the clarification...^^^hopefully not the older red hv cap that was making everything go kablooie

Im just now considering doing 4s for my speed runs in my rustler. I have found 2 2s packs that would cost less than a comparable 3s in terms of discharge. It'd be alot more economical for me to purchase 2 2s packs that I can run in my rustler,stampede,xxx-t than to waste alot of money on one 3s pack that will only get used for speed runs. I already have the CCBEC installed,red wire removed and fan on esc for the hell of it. The only difference is Im not running some low kv/ high effecient motor. I'm running a current hoggin 6900. Is there like a certain range of watts that the esc starts not liking? I'm not sure how many amps the 6900 will be pulling, but couple that with the increased voltage, I'm sure it will be hard on the esc. Im not worried about the motor at all, if that goes, oh well, I'll get a 9000 and start over again :P But I am worried about my esc, I wouldn't want to smoke that.

i'd do the double cap mod done on the HV ESCs (2x 25v caps, i think...)

my setup was CC Bec and a 12volt 25mm 12v p/c fan with a 4s2p 6000mah with MM 5700 and it was great! Esc never got hotter than 140 degrees.

Wow, in a TC4? I bet that thing flew. Im thinking about getting two cheaper zippy 2s packs and wiring them in series. I plan on charging/balancing them seperately. Will I have to change my LVC from auto to 12v? Is there any problem with balancing the two packs seperately?

Haha yeah, It flew, but I overheated a cms 5700 with that setup only because I broke my fan that was cooling the motor :C When everything was being cooled, esc and motor never saw anything over 150ish. When I limped the tc4 back in the motor was +/- 300 :neutral::lol:

Nothing will happen if you balance your packs seperately. Thats what I do to mine. I've set the LVC to Auto, and both MM and MMM correctly detect the cell count every single time. I make sure to listen to the number of beeps. The Zippy packs are great, I took them out of storage yesterday after a month or so and they were still balanced, and I ran my E-Revo for a good 20 minutes before calling it a day, and each pack still had 11.2 volts (3s packs in series).

Yep, a full charge is a full charge. I run 2 Maxamps lipos in series and they don't run too terribly out of balance. Being Maxamps lipos they still run imbalanced but there's nothing I can do about that.

Oh cool, thats awesome that the MM will recognize 4s on auto lipo. Thanks for the info!