I did a small test today w/a mmm and MGM esc

[magman]

I tested each esc w/2 batts. After a full battery....20min
I borrowed a friend's mmm esc. & ccbec.

Motor was allowed to cool between batteries.

set up:
9xl 44/17
4800 4s 25c
MMM esc & MGM 160 esc
I used forward and reverse on both controllers.

Temps:
Batts: 140
mmm 150
9xl 170
timing 2*
punch control 50%
low start power
cc bec 6v
brake 50%
drag brake 30%



Temps:
Batts: 115
MGM 120
9xl 130
timing 5*
accel. .66
brakes 1/1.3
behavior when batt. goes down... cut off
correction of neutral NO


I found it interesting that two setups which are similar can yield way different temps.

[Takedown]

Ive heard the firmware on the castle controllers makes them run hot but a positive is that they are very smooth.

[magman]

The mmm esc did run extremely smooth...a bit smoother than the MGM. Interesting as to the temp. differences between the two set ups. The MGM ran quite a bit cooler.

[tc3_racer_001]

i think the reason why, is becuase the mmm CAN draw heaps of current to start off... the ability to do this makes it so smooth (i think, never actaully run one yet...) it then passes this huge current to the motor making everything that little bit hotter. also, would the drag brake cause lots of heat? it would be great if you could change 1 variable each time and drive the same and see if you can get the temps to match the MGM?

[magman]

Originally Posted by tc3_racer_001

i think the reason why, is becuase the mmm CAN draw heaps of current to start off... the ability to do this makes it so smooth (i think, never actaully run one yet...) it then passes this huge current to the motor making everything that little bit hotter. also, would the drag brake cause lots of heat? it would be great if you could change 1 variable each time and drive the same and see if you can get the temps to match the MGM?

That is probably why the batt temp is so high. If I fiddled with it long enough I could probably the temps similar. All in all, I believe the MGM set up would run cooler in the end.

[magman]

I wonder if I went up to 5s w/a 10xl or a 1512 1YF would make a difference in temps. My 1512 1YF is getting repaired....

[bdebde]

I notice a higher temp in the battery on my MMM compared to MGM, motor and ESC temps are about the same though. I do notice that the MMM seems to put more power down. Some of that may also be due to the MGM's "pre-emtive" LVC. I also need to do a bit more tuning with the MMM (some punch control).

are the mmm temps with its fan? did you run the ubec on both esc's?

[magman]

The mmm uses it's fan, wired to the receiver, the MGM does not have a fan. The mmm is using a external bec., the MGM is using the internal bec.

[lincpimp]

Which "felt" more powerful? Seems like the MMM can pass some serious current, and feed the motor well. Running the same motor back to back with a MM and the MMM made more power. Motor and batts did run warmer. It also seems to work best with a neu motor...

Kill the drag brake and the temps will come down. I am running a 1515 1.5d in my erevo geared for 40mph on 4s and neither the motor or the MMM gets over 140f. The batts do get warm, like 110-115f. Not bad considering that they are in an almost sealed box.

[Takedown]

This is some good info. Im hoping that once the v2's come into full production here soon that their not on backorder for forever...

[rootar]

i just got back from racing all friday night, and allday and night saturday, and i ran over 6 hours (yes 6+ hours of actual on track time, i drained my battery 13 times over the two days), on my xray with the mgm and neu 1515 2.5 and no matter how hot or how long i ran, or the track conditions the mgm had solid low temps NEVER getting over 132, my neu consistantly ran in the 150-160 range which is understandable since 20 seconds of every 45 second lap was full throttle, but my battery temps never hit 110


that seems a little harsh for battery temps witht he MMM i thoguht 140 was the MAX temp with out starting to have problems

[TexasSP]

My battery temps have remained the same with the MMM vs the MGM. I haven't noticed much difference in operation temps either.

MMM set to 20% punch control and 10% drag brakes. I also have the brake curve set low then ramping up abruptly at the end if I need to brake really hard. I like the brake curve to allow me less finesse in my finger control for smoother braking. This is all bashing in a variety of terrains.

I think hardware wise the MGM is the more solid of the two controllers, I think driving and programming are superior on the MMM. In a way it's a toss up, but for the price of the MMM, you can't go wrong.

[gramey]

Which "felt" more powerful? Seems like the MMM can pass some serious current, and feed the motor well.

What's the current rating of the MMM?, I know the MM V2 is rated at 200A continuous so presumably has a higher burst rate than the MGM 160. The MGM is obviously rated at 160A's continuous and 200A burst, so the MMM if rated the same as an MM V2 would feel more powerful because it is.
The MM V2 has it on price, especially if you then go to the MGM 224, but the MGM is available in a waterproof version, not a problem for you dear old boy's from the sunny states but useful here in the UK.

[MetalMan]

Originally Posted by tc3_racer_001

also, would the drag brake cause lots of heat? it would be great if you could change 1 variable each time and drive the same and see if you can get the temps to match the MGM?

Was the drag brake on the MGM set? If not, that could explain excessive heat in the MMM and 9XL.

Originally Posted by gramey

What's the current rating of the MMM?, I know the MM V2 is rated at 200A continuous so presumably has a higher burst rate than the MGM 160. The MGM is obviously rated at 160A's continuous and 200A burst, so the MMM if rated the same as an MM V2 would feel more powerful because it is.

This is the reason why CC doesn't rate their car ESCs for current anymore. There's no standard for the ratings.