RC-Monster Forums - mamba max brushed

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- - mamba max brushed (https://www.rc-monster.com/forum/showthread.php?t=5366)

sven	01.30.2007 01:34 PM

Granted this is with 55turn motors, but this is a post from rccrawler:

http://www.rccrawler.com/forum/showp...1&postcount=49

Quote:

Originally Posted by johnrobholmes

If we assume the stall amperage is 20 amps ( just a guess) on 9 cells, we find that 20 amps x 1.2 volts/cell x 9 cells = 216 watts. The mamba maxx is capable of 1000 watts continous, so you could run 4 55t lathe motors stalled in parallel forever and have no problems. Again, this is assuming 20 amps stall per motor on 9 cells. Im gonna look for a lathe motor and a 9 cell pack...

The 55t lathe motors on the other hand, would not be able to handle 9 cells when stalled forever

jollyjumper

01.30.2007 02:29 PM

ha yes.
that interesting.
but mod motors pull more then 20 amps.

coolhandcountry

01.30.2007 08:53 PM

Quote:

Originally Posted by jollyjumper

any one know this motor well?
http://www.plettenberg-motoren.com/U...0_20/motor.htm

I think artur has one of them motors to try out. I not sure if he has yet.
It supposed to have pretty good amount of torque.
Artur = Griffin

jollyjumper

01.31.2007 08:21 AM

lets wait for artur to come by then.

coolhandcountry

01.31.2007 07:04 PM

Well he comes and goes. You may want to pm him. It may be easiest.

jollyjumper

02.01.2007 04:06 AM

well, i have time. hahaha:005:

GriffinRU

02.02.2007 06:41 PM

I have 355. Very nice motor. What parameters you are loooking for?

Artur

jollyjumper

02.03.2007 05:14 AM

i'm more into 540 to 600 size motor's for my twin force.
doesnt have to be fast, stock speed is really enuff for me.
i'm interested in motor's that could do center diff drive.
gearing with diff in the center would be 15/1 or so.

GriffinRU

02.04.2007 01:13 PM

Quote:

Originally Posted by jollyjumper

Well 355-number was for plett. and it is big, almost as big as truck itself :)

As for 540-600 johnson-mabuchi type motors then 55-turn or sensored BL would be the right choice.

Artur

jollyjumper

02.04.2007 03:01 PM

i know how big the 355 is, its not for me.
and its to slow aswell.
i'm lookin for motors that do 25k rpm. on 2s lipo.
any way, how much amps and volts is the MM bec?

GriffinRU

02.04.2007 06:20 PM

Quote:

Originally Posted by jollyjumper

i know how big the 355 is, its not for me.
and its to slow aswell.
i'm lookin for motors that do 25k rpm. on 2s lipo.
any way, how much amps and volts is the MM bec?

MambaMax BEC 5V and probably 5A rated but heatsink limited to no more then 2A @ 2s LiPo

8.4V - 5V = 3.4V
3.4V * 2A = 6.8W of heat dump from BEC alone (continious duty)

Artur

P.S. I am a little bit confused, you want crawler?
Check at megamotors in brushed section.

jollyjumper

02.05.2007 02:38 AM

no not crawler.
want slow basher.
30/40 kmh
dont break stuff like that.
and may make really tight track someday.
also want direct drive in the future.
43/10 diff and center diff 46t.
with 13t pinion that would make 15.21/1.
need motors that can handle that.
thanks for your help.
mike.

coolhandcountry

02.05.2007 09:31 AM

I think I know what you mean jolly.
I have a samiliar idea myself.
I haven't figure out exactly what I am going to run either.

jollyjumper

02.05.2007 09:35 AM

do you want it to be able to crawl?
i dont really.
i'm kinda thinking rwd now. save some weight and more fun.
if its not overpowered it might make nice controllable slides that way.

jollyjumper

02.06.2007 12:32 PM

i have tried to trial drive my truck, you wouldnt believe have much fun that is.
so i may go with something really slow and crawleble anyway.
need spool's .
better taller tires.
dish wheels.
and so on.
i love it.

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