voltage vs efficiency??

[stum]

I've been running 5s 5k packs this year that weighed in at about 665 grams on my 1515 2.5d/f in my 8ight-t, but this next year I'm stepping to a 4s 6500 35c hyperion pack (685g) for most races w/ a Castle 2200. I'll use my SMC 4s pack (842grams) for those few Sunday a-mains when I need to race for 30-45min against nitro's; this will keep me at one battery swap, giving me a chance to stay near the top.

18.5*5k=92500
14.8*6.5k=96200
14.8*9k=133200

59.2v*3200=189440 (pushing 2x as much run time as my normal setup)