Quote:
Originally Posted by hemiblas
Now that I am remembering back to my run, It had done a single cartwheel before it stopped working. I have read about a couple peoples MMM that stopped working after a landing or being jolted somehow. Then it stopped and I reset it. Worked for 10 seconds then shut down. I got the same blinking lights then fading some people have posted. I dont think my setup of 4S and a 7XL had anything to do with it.
My only concern on the 6S setups is that some people are not taking into account the amperage spikes that could be occuring. On 6S and geared high there could be voltage spikes in the hundreds of amps. A lot of these people are running 5000mah cells in 3S config series for 6S total. I dont think most 5000mah cells are up to the task of providing the current needed. I not an expert on ripple currents or anything like that, but I am not sure how the speed controllers react to asking for 200 amps of spike, but only getting 100 in return from the battery.
My 7XL setup geared for 39mph sees spikes of about 80A. For every mph over that I'm sure there is a huge increase with motor inrush currents and its not a linear factor.
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Your 80A was math or measured amps? just wondering. i would hope that castle would not recomended 75A cont. rating for your cells and sell it with a 1515 1y. i run on 6s 1512 1700kv and have had a total of 4 stop working. 1- died in calibration 2- worked for ten laps then stopped 3- turned on blipped throttle to check ok turn it off put on tires go outside turn on nothing 4-worked for 5-6 mins driving in dirt lot at work pulled car up to check temp, died. was running mech. brakes too. castle approved of the setup i chose as well. not a speed run car i like to race, dont like to drive unless at the track but couldnt help it that morning. people were starting to think i was crazy cause i had been telling them i would bring it when it was done for like 3 months. when it ran it was FAST(15/46== 38mph)and nothing was above ambient temp.(75*) i would think if it was spiking in the hundreds of amps something would at least warm up.
it is indeed a mystery to what is really happening and cant wait for my v3 to arrive so i can get a full pack in
