Current Rating

[NE32]

I have a range of castle ESC's here but I was just wondering what current they can really handle. I have the MM Pro , the original MM , Monster and newer sidewinder. Obviously the Monster is the best but would the MM Pro with some extra caps be as good? Are the original MMax's better then the new ones ?
This is for my RC Dragster so size and weight is an issue? Patrick your opinion would be appreciated.

Thanks

[snellemin]

Too me the MMax is as good as the MMpro power wise of the line. You can add caps too them and be a bit better off the line, but the MMonster will still be the best for dragracing regarding peak currents. You can take of the casing and heatsink of the MMonster and save weight that way. Add caps if needed. I had to add 3 caps on mine to make it more responsive at startup, in my 2s 5.5lbs speed runner.

[NE32]

I have seen that castle is advertising a new cap board of there own that looks good but at over $20 is a bit pricey especially when shipping from castle to Australia is a fortune.
I ran a 1.34@97mph on 3s at 1240 grams with the original MMax with an extra cap but I thought the old design might be holding it back compared to the new Pro with some extra caps. The monster is the king I guess but last time I removed the heatsink on one it smoked.

[snellemin]

You can built your own cap bank. Just put it as close as you can to the voltage input side of the ESC.

With the Pro you have the advantage of running sensored motors and more tweaks. Instant starts, translates to better 6ft times.
You will have to get use to a different driving style though, as power bands are different. Seems Losi motors are preferred. I prefer X12 LRP motors. You will have the options of multiple rotors, and there is even a lighter motor case.

See what works for you and have fun.

[J57ltr]

Current ratings were

MM= 100 amps
MMpro= 80 amps
Sidwinder= 80 amps
MMM= 200 amps

Caps aren't going to make the system handle more power they are only going to come into play if the IR of the batteries are high, that way you can store a little extra juice for a split second, but overall power handling is a function of the Fets and the copper in the board.

Jeff

[BrianG]

Kinda depends on the voltage you want to use too. MM handles up to 3s, some can do 4s or even 5s on earlier models, but need a BEC on anything 3s and up. The MMPro has the sensored option, switching BEC, and about the same current handling, but takes up to 6s. 6s@80A > 3s@100A (that's assuming those current ratings are accurate).

Also remember that the MMPro uses better FETs than the older MM, so even though it may have fewer of them, both ESCs have about the same current rating overall.

[J57ltr]

If I remember correctly those numbers were from Patrick. The Sidwinder I seem to remember that it was more closly related to the MMpro and it's contious current was also 80 amps.

Of course I have been wrong before.

Jeff

Correction: 120 for the MMM

MMpro is 2/3's the current handling of the MMM

Here is an old bulletin that Castlle had listed at one stage, lists a few current ratings

http://www.castlespecialprojects.com...ntrollers.html

Cheers

[NE32]

After looking at that table the MM Pro and Monster are not even close on power handling. We pull big amps off the line ( easy few hundred for a very short burst )and I just dont think the MM Pro is up to it now, so I will see how long old faithful original MMax will go.

[Pdelcast]

Originally Posted by NE32

After looking at that table the MM Pro and Monster are not even close on power handling. We pull big amps off the line ( easy few hundred for a very short burst )and I just dont think the MM Pro is up to it now, so I will see how long old faithful original MMax will go.

Well, I would take that rating with a grain of salt...

We've upgraded the mosfets on the MMP and MMM twice in the last two years... So both now handle significantly more current than that old chart would suggest.

Patrick

Originally Posted by Pdelcast

Well, I would take that rating with a grain of salt...

We've upgraded the mosfets on the MMP and MMM twice in the last two years... So both now handle significantly more current than that old chart would suggest.

Patrick

how much current does the mamba monsters mos fets handle now if they have been up graded sir?

[snellemin]

Originally Posted by anunaki

how much current does the mamba monsters mos fets handle now if they have been up graded sir?

Enough to heat up my lipo within 2 minutes