Mamba Max and 5S? - RC-Monster Forums

BP-Revo · **Mamba Max and 5S? -** 01.22.2008, 11:55 PM

Well, what are your thoughts on it. I'm thinking I am wanting a bit more top end out of my G2R (though gearing is light right now). I don't think I'll get the top speed I want no matter how I gear up, so I'm thinking of just going 5S to do the job.

I'm just wondering how the MM will fare? Just wanted some opinions.

DrKnow65 · 01.23.2008, 01:31 AM

Have you put in better caps? Back voltage is higher than input voltage so I think the 35v caps are a must.

MetalMan · 01.23.2008, 01:34 AM

If he does want to go with more caps, then he's lucky to know a guy who has a bunch

BP-Revo · 01.23.2008, 02:29 AM

I do have a few caps (a couple of the Novak HV caps and also 4, 330uf, 35v caps that I got from suicideneil). And I'm sure MetalMan has a boatload like he already mentioned.

So if I just put on more caps you guys think I'll be ok?

I figure that more voltage will help reduce current loads and therefore will be less stress for the ESC, since the FETs are technically rated for 6S...

lincpimp · 01.23.2008, 02:58 AM

I melted some excess solder when I ran mine on 5s and it blew out a few fets.

This may have been due to a huge voltage spike casue b a rock in my spur gear. And the fact it was spinning a 7xl. Add a few caps and give it a try, just gear low and take it easy until you get some good temp readings.

I will say that a 7xl on 5s lipo in a 1/8 buggy is badass, never got a chance to get it hot, but i am sure that it would cook!

BP-Revo · 01.23.2008, 03:35 AM

This is a 1940/7 in a G2R. Its pretty lightweight (~9.2lbs) and has a pretty smooth drivetrain.

Hickoryhead · 01.23.2008, 04:19 AM

I run a G2R with a 1950/7 and a MM. I usually run 2 2s2p 6000 mah. I put a 3s2p 8000 on with one of the 6000's and the truck moved. BUT the MM was hotter than it should have been. Dont

have a temp gun so can't give you a degree but it was cooking.

ib4200 · 01.23.2008, 05:31 PM

are you guys saying if you just add capacitors to an esc it can handle more volts???

ClodMaxx · 01.23.2008, 05:34 PM

the nice thing about the MM is that it'll only cost you 50 bucks if it doesn't handle it well.

GriffinRU · 01.23.2008, 05:40 PM

Quote:

Originally Posted by ib4200

are you guys saying if you just add capacitors to an esc it can handle more volts???

Depends on how badly you overloading stock MambaMax, in some cases it helps in some it is just not enough.

ib4200 · 01.23.2008, 05:49 PM

ohh. does it work with any other escs?

GriffinRU · 01.23.2008, 05:57 PM

Quote:

Originally Posted by ib4200

ohh. does it work with any other escs?

No, most ESC's comes with correct caps inside to start.

ib4200 · 01.23.2008, 06:12 PM

you make bigger caps sound like a bad thing...

GriffinRU · 01.23.2008, 06:20 PM

Quote:

Originally Posted by ib4200

you make bigger caps sound like a bad thing...

They do help battery but not much for ESC...
In MM case above 4S and with higher currents caps start to overheat and once their temp goes up all the good things they used to do for ESC vanishes away. Following with failures first and smoke second...
Also "bigger" caps are not always better then smaller ones, there are specific parameters and placement which makes them good.

ib4200 · 01.23.2008, 06:32 PM

not trying to be a pain but, what are the parameters?