How exactly are people getting long run-times?

[stum]

I run both an 8ight-t 8ight-b and a e-revo and the truggy and e-revo both get about 12 minutes of run time on 4s 35c 5k packs, the buggy gets about 13. All are geared for at or just under 40mph. I have a 5s 6k pack I run in my truggy for longer a-mains as well, this gets me enough to do a 20min, but not quite enough for 30min typically. One battery swap in a 30min main works out though if it's a smooth swap.. keeping pit time evened out.