You hate me??? LOL To be honest, I was quite surprised by how well it did. All my numbers and bench testing said it would work. I sold my Viper 2 years ago, but I have a Conspirator 500 that I am going to put the conversion on and do more testing. The Predator was a hanger queen and I thought that if there was any airframe I could afford to loose, it was that one.

The beauty of this if we can get an event going would be to use the 1000 watt-min limiter and then it wouldn't matter what you used for motor or cell count because you would have the limiter level the field. I would opt for a 9" prop min dia to limit RPM and control the speed. It would also increase the thrust available. I would use all other Quickie 500 rules as they are including the min weight.

I haven't seen any currents higher than 45 amps with the Turnigy motor on 4S. The 35-48-1100 will really improve the speed and efficiency of the system. I am sure the current will go up too so maybe the best prop would be the 9 x 6 or 9 x 7.5. Going to 5S would reduce the current needed to make power and could also reduce the size of batteries needed. The set-up as is would be a great entry level event using the AMA 504-B (2) pole course. It is also very cheap!!

Take care and enjoy that new Viper!! LOL