Ken,


There is an additional thing that could be used to govern electric that would make the power-systems really up to the pilot. In F5D, they use power limiters that are set to 1000 watt-minutes. Basically that allows you to use up to 1000 watts for 1 minute and then it shuts the motor off. With thess bigger airframes, none of them are going to go (10) laps in one minute, so say for the typical 1:30 times we see in 424 on long course, you could sustain 667 watts for 1.5 minutes giving you 178 watts/lb on a 3.75 lb Quickie 500. The limiters are $50 and available from Steve Neu in San Diego. Again, the system I have in the Predator right now is not quite capable of that power level, but I have a motor on the way that is. For the prices I have listed, it could be an attractive selling point to bring electric racing to people'e attention.

Now obviously, the smaller higher current batteries would be what you would want. Limit the min dia to 9" and you have an event.

I will make sure that the LA Racer I have will be able to employ the system I have in the Predator right now so I can get some real data. I have an Eagle Tree data logger to track motor RPM, Current, Battery Voltage, Watts, and Mah used.

Interested yet??