Originally Posted by
Genebaby
Just quickly on batteries, it seems the ones I initially chose to race with and my old sets, were not a good match for the VTX8.
I thought the Monster in my Vorza was a high power ESC, and I was using some 30C batteries just fine, as my introduction to brushless, lipo 1/8 RC. These in a 5000mah config pump out 150A, enough for the Mamba Monster, just by luck I guess.
One of those died at practice but I didn't think much of it.
I used my new Nano-tech's at racing on the weekend and did some races with a 3300mah 65C brand new battery. After the third race it didn't charge right so I used another and it was DOA when I checked it at home, same problem as the older battery, Cell 1 at zero.
It seems the 3300 65C battery can deliver 215A, still under what the Viper can ask for. Does this all sound about right?
I also have some 5000 Nano-tech's to use, but also four 3300's left, which I am not sure what to do except use them in the Vorza, which is my spare until the second EB48 is built, and then it's my daughters car to learn on.
I thought a 65C rating was pretty good and figured that 3300mah was just a shorter run time/lighter pack.
I just dont know how the esc could kill 1 out of 4 cells back to back like that. The only way is if one cell was weak and hte lvc was too low. Under a heavy load, the weaker cell could be pulled below the lvc and killed. If the other cells were much stronger, then the overall voltage might have been good enough to stay above and not trip the lvc. Aside from raising the lvc and maybe getting a better pack, I dont see how you could avoid this. Just because a pack is new, does not mean the cells are matched or that one is not weak.