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

Serum 01.21.2007 05:41 PM

160n/cm? i think there is a small error.. 16n/cm would be closer..

boss 302 01.21.2007 07:34 PM

Quote:

Originally Posted by Serum
160n/cm? i think there is a small error.. 16n/cm would be closer..

Serum form what i can tell his measurements are in newton millimeters while you are measuring in newton centimeters maybe im wrong, its just a guess

Sylvester 01.21.2007 07:55 PM

Quote:

Originally Posted by boss 302
Serum form what i can tell his measurements are in newton millimeters while you are measuring in newton centimeters maybe im wrong, its just a guess

I think your right.

coolhandcountry 01.21.2007 08:06 PM

1600 nmm is same as a 160 ncm

jollyjumper 01.22.2007 04:32 AM

ah yes, i made a mistake, sorry bout that.:035:
it is 160Nmm. :027:
that seems alot more realistic.

Serum 01.22.2007 04:56 AM

@boss and sylvester;

1600N/mm is 160N/cm.. Ten points go to Leroy..

GriffinRU 01.22.2007 09:32 AM

Quote:

Originally Posted by jollyjumper
hmmmmm
so how would i convert oz-in to newton-mm then?
thanks.

1 oz = 0.278 N (Force)
1 In = 0.0254 m

Ex. 16 oz-in = 16*0.278*0.0254 = 0.113 Nm

Artur

coolhandcountry 01.22.2007 10:37 AM

.113nm = 113nmm =11.3ncm

jollyjumper 01.22.2007 12:37 PM

okay.
i wanna try something.
need imput.:032:
clods use 2 540 brushed motors.
would the twin force work with 2 540's?
i dont want too much power so it wheelies and stuff like that.
i like to keep the nose on the ground.
would power them with 2s lipo.

GorillaMaxx360 01.22.2007 12:44 PM

Just go Brushless you will be much happier if you get the right setup

jollyjumper 01.22.2007 12:52 PM

cant play alot when the motors cost 300€.:002:
i mean expirement.(spelling:032: )

GorillaMaxx360 01.22.2007 12:54 PM

feiago 85 bucks but dont know how much that is in other money but here that is about the same price a touring car motor that is used in the championship races that pros use.

pinolelst 01.22.2007 02:22 PM

Quote:

Originally Posted by GorillaMaxx360
feiago 85 bucks but dont know how much that is in other money but here that is about the same price a touring car motor that is used in the championship races that pros use.

Yep..the last 10 turn brushed motor I bought cost me $80 USD :032:

pinolelst

jollyjumper 01.22.2007 05:41 PM

can get decent mod motors for 35€ aswell.

glassdoctor 01.22.2007 08:27 PM

I've been paying $50-60 for handwound mods for like 20 years now... prices haven't changed since the 80's

There are some nice machined wounds for $30-40 too like jolly says.

jollyjumper 01.24.2007 03:35 AM

high-end handwounds go from 85€ to 110€ here.
i was wondering, will mamba handle 2 motors (brushed):032:

coolhandcountry 01.24.2007 02:25 PM

As long as they don't go over the rated amps for it. You good. Depends on
how you wire to. Parrellal and seires has two different amp ratings for same motors.

jollyjumper 01.30.2007 08:42 AM

plettenberg HP 290/20
 
any one know this motor well?
http://www.plettenberg-motoren.com/U...0_20/motor.htm

sven 01.30.2007 09:43 AM

Quote:

Originally Posted by jollyjumper
high-end handwounds go from 85€ to 110€ here.
i was wondering, will mamba handle 2 motors (brushed):032:


You could probably run quite a few brushed motors off of the MM. :027:
I use the Mamba Max in my clod crawler, running 2 55t lathe motors in parallel. It is great for that application due to the drag brakes.

jollyjumper 01.30.2007 09:54 AM

one would need a data logger to be sure.
so one can measure amp draw of the motors.
but i'm sure mambamax' wouldnt handle alot more then 2 motors.

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

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
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.

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.

coolhandcountry 02.06.2007 11:12 PM

What are you running jolly? I am going to go for something not really slow but run like 15 to 20 top speed. I have locked my diffs already. It has some big joes on it as well. Moved the suspension and shocks to have great travel. I haven't tried it yet. Maybe tomorrow.

jollyjumper 02.07.2007 05:09 AM

all stock twin force. except for center uni's.
mamba max esc.
stock motors.
2s orion lipo 3200mah.
thats the most important.
thing to come:
hb pro diffs, 4.3/1.
17mm wheels and better tires.
better motors or only one motor if he is powerfull enuff.:D
some sweet wiring so i can run 2s2p.
maybe a integy sbec 5 amp if its any good<= any input on this?:032:

jollyjumper 02.09.2007 11:14 AM

help!
i dont know what i should do.
i like bashing alot.
but also trial and stuff.
want center diff for bashing.
but then it couldnt trial any more.
what to do:032:

coolhandcountry 02.09.2007 08:11 PM

Build another truck. That is the easiest. It is real hard to have one truck to do all.
You build a truck for every thing you want to do and you have it covered. :)

jollyjumper 02.10.2007 05:10 AM

i'll bash with with this one, then see bout the rest.


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