Beginner's questions
1. Why are Q-40 racers lacking tuned pipe? Why do they have side exhaust? Why don't they have retractable gears? Seems 50MPH are lost because of these ommitions. Are these the Q-40 regulations?
2. Seems that these engines (such as Jett) are good at astronomical RPM and deliver very little torque. The huge power is because of the RPM, and no need for substantiaal torque. So why don't we see high-end car engines in this application (with smaller heat sink)? One of the Novarossi engines delivers max RPM of 44000RPM (it's a .21). Since there's much bigger market for cars than for Extreme speed planes, I would expect to have the state-of-the-art in high performance engines to come from the model car market.