Castle 2200 on 4s or 6s

[Patrick]

The few times I used mine on 6s (http://au.youtube.com/watch?v=1a2zmUbG8Ic) I just used my normal 4s racing gearing (~35mph), so it ends up being about 50% more top speed, which was enough for me. After 10 minutes it did get about 30 degrees hotter than usual 4s running, but that's still only 150f.

Anyone know if this motor (1515 1y) with the MMM would handle a 45/20 or 45/22 gearing on a losi 8ight-e buggy? Also would this gearing help keep it from flipping over at full throttle?