You got it! I run 11.1 lipo on the basic 4200 in my tc3. The 4200 could take 12 cells as well, but I would probably go with a basic 3600 or 3100 even on 12 cells. The 6s on 12 cells would be over 80000 rpms! Yikes! On 8 cells, the 6s is still pushing in the mid 50k rpm range, which is pretty fast.