I have a custom 2s and 3s pack made out of Sony vtc6 18650 cells.
These cells (original) are believed to be continuous discharge up to 20A.

I attempted these packs on my slash 4x4 vxl (stock motor and ESC) on flat concrete surface and it ran fine.
I monitored battery and lead wire temperature. It was ok.

Any one else tried this? Any risks involved?