Mamba Micro Pro vs Micro Sidewinder
 

If someone could help clarify a few points for me that would be great:yes:

First up either ESC will be be going in a twin ESC berg in the 4 to mid 4pound range running 16t 454 puller's, on 3s. I believe the motors would be roughly around the 25-30amp mark. Oh and they are brushed motors.

Now from what I can tell the micro sidewinder is a decased mamba micro with no heatsink. If I were to add a heatsink to a micro sidewinder would this be roughly equivelent to a mamba micro amp rating wise? If so this is very appealing as I would remove the case from the mamba micro anyway for size. However if there is another major difference that reduces amp capacity please let me know, I like to keep my magic smoke inside my ESCs :lol: Or plain and simple am I just better off spending the extra $30 over the sidewinder micros and getting the mamba micros?

Also if the heatsink option is worthwhile, is there really any special shape of heatsink I should be looking at. I understand the pin sort would have more surface area and should technically cool better, or on such a small size does it not really matter?

Thanks in advance!
Kieren

spend the extra money

AN, X 2 to spend the extra dough :-)

But since you asked, yes there are some things to consider if your going to put a heat sink on something yourself and it's not all that simple. You have to account for how much heat you have to dissipate, the time you have available to dissipate it, the efficiency of the heat transfer in varying conditions, and the size/weight available to your sinking solution.

You could toss on any sink you wanted, and hope for the best. But a great company like Castle Creations has already done the math, R&D, beta testing, and they'll back it up with a warranty for a year ;-) All that crap you don't need to worry about for an extra 30 bones, you can't go wrong.

Should have also mentioned a law, watts=volts x amps.

Double the voltage, half the amps, have less watts lost as heat. Quadruple the voltage, quarter the amps, much less lost as heat. Assuming your keeping the same power output (wattage) at each voltage.

Hard to pull off high voltage with brushed motors, consider going brushless. Much higher efficiency right off the bat.

Thanks for your help:yes: Looks like I'll go with the pros. Yeah in regards to amps/volts, that's very hard to do, as the motors are really 3s with caution, any higher and it's going to be instant smoke! Brushless is a pain in crawlers and especially for the rig I'm building as the axles pretty much only take 400 size motors. And as of now no one makes a sensored 400 size brushless motor, however there are plans on the table, but that's about it. But I know exactly where your coming from and am trying to follow that principle in my Hyper 7. And just to clarify it's not some rubbish redcat/hsp thing that it only takes small motors:lol:

Thanks!
Kieren