Went back to the 1800KV Castle outrunner on 2 5000mah 20C packs but added an X445. Way cooler running with good run time on 2S packs. Still room for more prop so next I will try an X447. As I'm using bigger props I'm lowering the strut just enough to clear the strut, still neutral. I'm getting absolutely no bounce at WOT. Running my packs at 9.5" from the transom forward because the bugger prop causes the front to lift and flip backwards otherwise. I finally broke my canopy finding that out the hard way. I Was lucky enough it shattered but was still in 1 piece. It's all glassed over now
[link]http://www.youtube.com/watch?v=x-z18v-PFac[/link]