Help with XL2 log data???

[magicald]

Originally Posted by fastbaja5b

239 Amps seems pretty high, what are you geared for 100mph? I have a 1717 for my Flux 5T conversion and have decided I don't trust the MMM on 6s Lipo so a MMXL is in order, would you even need a cap pack with the XL esc?

My gearing is not radical for an E-muggy, again 17T pinion and 48T spur...I was using 16T with the MMM though my motor wires would heat up more than anything else...the 1717 is fairly large in the muggy and unless I mill down the fins adjacent to the center diff outdrive, there is no way to get less than 16T or I'll have to shim up the center diff and put a 50T spur?

Originally Posted by coolhandcountry

I do remember saying that some of the firmware operates better then others.
I not sure which ones are avilable for the mmxl.

I'll have to check the firmware version...not sure how many there are for the MMXL?

Originally Posted by magicald

though my motor wires would heat up more than anything else...

Thats mean its to much resistance, you may want to gear down ore check\re solder your connections.

Both 8% ripple and 240 amp (burst?)is a bit high to say atleast.

im not even pulling that in my baja with 2028

[Pdelcast]

Hmmmmm....

I disagree with you guys that 240A is really high -- if he's drawing 240A at top speed, then yes. But during acceleration currents can get REALLY high.

An Erevo brushless edition draws 400A during acceleration. Average current is only about 80A, but peaks are 400A+.

I think the datalogging feature will open some eyes to how much power these cars use.

[RC-Monster Mike]

I am not surprised by a 240 amp burst - this current lasts way less than a half second and isn't unheard of with a 4wd truck in high traction. The average draw will probably be less than 40 or 50 amps throughout a typical run(a 5000mah battery at 30 amps average draw will last less than 10minutes).

When using the data log, the sample rate makes a big impact on the draw that you actually see in the log - 10 samples/second will show much higher peaks typically than 5 samples/second or less, for instance - the peaks last a very short period of time usually. The 240 amp burst, for example, may show up as 150 amps if only sampling once per second.

[magicald]

Originally Posted by freddy

Thats mean its to much resistance, you may want to gear down ore check\re solder your connections.

Both 8% ripple and 240 amp (burst?)is a bit high to say atleast.

im not even pulling that in my baja with 2028

Oh, my motor wires stayed cool with the Mamba XL - I've shortened the wires as much as I can while still including the 8mm bullets..

Again, motor and ESC and wires stayed cool though it was a short run.