

I just bought a 3.5 motor for the XXX...
Just messing.

, I think running the limited class is an awesome Idea.
I'm running the:
Losi XXXcr
Orion 3800 mah 30C pack
Novak 10.5
Gearing -- 78t Spur and 25t pinion at full tilt on the radio. The pack usually lasts me about 12+ minutes of running time.
I've run the pack fully charged, for a couple of minutes in hot laps, ran the 8 minute main, then play on the track after the mains for about 4 minutes or so, before noticing a drop in power.