RC-Monster Forums

RC-Monster Forums (https://www.rc-monster.com/forum/index.php)
-   Brushless (https://www.rc-monster.com/forum/forumdisplay.php?f=12)
-   -   mgm 160 (https://www.rc-monster.com/forum/showthread.php?t=5820)

meatzardd 02.23.2007 03:02 PM

mgm 160
 
hey guys, just wondering if the mgm 160 can handle more then 16 cells?

Sylvester 02.23.2007 03:03 PM

It is rated for 16, i wouldnt surpass that.

jollyjumper 02.23.2007 04:02 PM

there's always the mgm 160/24 if you need more.

meatzardd 02.23.2007 04:55 PM

thanx guys, which esc would u guys recomend, i want to run a neu and 16 cells. maybe 4s lipo in the future

captain harlock 02.24.2007 07:25 AM

Just go for the 16024. That way you'll be sure everything is fine when you want to go higher in cell counts.

Serum 02.24.2007 07:51 AM

looking at your wishes, the 16016 should be enough.

GriffinRU 02.26.2007 09:57 PM

Ok,

If you do not plan to use more then 16 cells then do not buy 24cells version. 24 cells version rated for 160A but capacitors which they use are not rated for that current. Bottom line you will gain higher efficiency running high voltage but you need to sacrifice current in order to achieve reliability, otherwise you will smoke MGM if not on the first run then on the second one for sure.

Artur

captain harlock 02.26.2007 10:18 PM

So, if I'm gonna run between 6 to 8 lipos, will that destroy the 16024?

BP-Revo 02.26.2007 10:27 PM

12 cells is about equal to 4S, so 24 should be equal to about 8S. Should be fine.

GriffinRU 02.26.2007 11:06 PM

Quote:

Originally Posted by captain harlock
So, if I'm gonna run between 6 to 8 lipos, will that destroy the 16024?

Which motor you plan to use? If you keep you current under 75-100A you will be fine. The most important is braking current. The best would be to use mechanical brakes or high turn motors.

captain harlock 02.27.2007 09:37 PM

I'm using a high turn motor, indeed(1950/10= 1254RPM/V).

GriffinRU 03.02.2007 11:30 AM

Quote:

Originally Posted by captain harlock
I'm using a high turn motor, indeed(1950/10= 1254RPM/V).

I will recommend to set light settings for brake, and watch for caps temperature. Adjust brake power (trim endpoints) to minimum and trim them up until they start warming up under hard braking.

E-Revolution 03.02.2007 11:36 AM

One question: why so many 16024 controllers get smoked, I have read that:032: I will buy this controller, but I dont want get smoked controller... I have usin 4s lipos only, soon 6s . I buy 16024 because I can use every lipos 2 to 8s :027:

GriffinRU 03.02.2007 12:07 PM

Quote:

Originally Posted by E-Revolution
One question: why so many 16024 controllers get smoked, I have read that:032: I will buy this controller, but I dont want get smoked controller... I have usin 4s lipos only, soon 6s . I buy 16024 because I can use every lipos 2 to 8s :027:

There is a weak link in MGM 16024 controller - capacitors, while controller itself rated for high current and high voltage, capacitors installed on 24V version have much higher internal resistance then the one with 16V version. So, what that have to do with smoke?, right, well capacitors play important role in suppressing high voltage spikes when FET's switching back and force and absorb punishment when you hit brakes. Capacitors with higher resistance work less efficient (generate more heat, by becoming warm/hot) thus allowing high voltages to pass to control electronics and if one of these spikes trigger wrong phase then you will get smoke. Temperature also degraded capacitor performance, so the rule is simple reduce the current as low as possible and if use low number of cells use lower voltage version.

I will say if you rate controller for power the you should be fine. Like 160A at 16V = 2560W, then at 24V you shouldn't draw more then 2560W / 24V = 106.6A.

And to be safe I won't draw 160A from 16V version either, maybe 120A, which corresponds to 1920W and to 80A at 24V.

E-Revolution 03.02.2007 12:43 PM

Do I get this stupid problem with 16024 if I use only 20XL06 motor and 4s or 5s lipo ? I dont want get this problem and waiting for same reason 6 months for repairing only... Do I buy this 16024 controller or not? Is 16016 more safety and more smart controller ?

(sorry my bad english:010: )


All times are GMT -4. The time now is 12:52 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.