I just got a temp and RPM sensor for my Taranis so I'll be doing some bench testing. That with my watt meter and a scale I should be able to get a real nice data set for this motor (and others) at various prop sizes and input voltage.
With the contra setup I agree that you should easily be able to get 1kw. 5lb is a lot of plane to get moving 83mph on just 1kw, though. So I'll definitely be watching
When you set this up, I'd be very interested for you to start a new thread on the testing of motors. I have a thrust rig set up but I don't measure temperature (other than a hand-held IR meter). I go full throttle, record the Volt, Amp, thrust and RPM and trust that if I am under the Max Amp rating the setup will hold.
Having said that, I just burned up my first motor during the world record setting event at FF2016. I was using NTM 28-36 2200kv with 2200 mAh 40C and APC 7x4 prop. On the bench it draws 40A. The motor is rated at 50A. However, I calculate Max Amp from the power setting line I get 30A and 46A respectively. Emperically I have determined that the motor does not have a 50A max - less than 40 for sure.
Model: NTM Prop Drive Series 2836 2200kv
Max current: 50A
Max Power: 310W @ 11.1V (3S) / 696W @ 15V (4S)
Cell count: 3s~4s Lipoly
This is the biggest frustration to me is how HK (or any other company) comes up with these numbers.