wrxrocks, what vehicle is this in? I'm running a 12/48 in my Jammin truggy, problem free. 13/44 isn't much taller, for an 8th scale buggy/truggy. The stock 8ight E comes with a 2100 Kv motor geared 15/45. So before you guys belittle him, lets figure out where he went wrong, or even if he did. I was beginning to think you guys blamed the failure on his Zippy pack.