I came here wondering about increasing the run-time of my power source, I see there has been quite some discussion on the subject already.

Just reading this thread I have this crazy idea of attaching two slim fans under the rear engine covers, running while the tank is switched on. Would this provide enough air flow to keep the transistors cool, or is it really necessary to delve into heat sinks? Could the main drive transistors be bolted to the back of the fans with a small heat sink (like the 486 CPU one) attached to the main circuit board via fly leads with connectors in the middle for easy top hull separation?

I suppose the idea of including only a 1700 mAh battery was as much to do with cost as it was with preventing overheating, surely there should be a scientific solution possible involving air flow and heat dissipation. Anyone got a thermal imaging camera?