Greeting All
Since my last post I did some data gathering and Got the maiden in today, but first to recap the power system, Typhoon 29/18/10, 60 Amp TowerPro Non BEC ESC, 5 amp UBEC, 6 (series) A123 Systems new Li-Ion batteries, and spinning a 11 X 5.5 OOHH and AUW comes in around 5.5 pounds.
The data below was with the motor spinning a 12 X 5.5, not the 11 X 5.5 I flew with today, A WattsUp meter was used and a Hanger 9 proptach was used as well, all bought just for this test. I stopped at 500 watts because I was testing with a 6S Li-Po pack and was getting close to it's 15C rating ( Thunder Power 2,100s)
@100 Watts the rpm was 6200, thrust calculates in at 2.4 pounds and pitch speed is 32.3 Mph
@200 Watts the rpm was 8000, thrust calculates in at 3.9 pounds and pitch speed is 41.6 Mph
@300 Watts the rpm was 9300, thrust calculates in at 5.3 pounds and pitch speed is 48.4 Mph
@400 Watts the rpm was 9900, thrust calculates in at 6.1 pounds and pitch speed is 51.5 Mph
@500 Watts the rpm was 10800, thrust calculates in at 7.2 pounds and pitch speed is 56.2 Mph
As I said I prop-ed down for today's flight, I was too nervous to enjoy it, the second flight I was fine.
Here is the maiden
http://media.putfile.com/maiden-P51
Sorry my brother should use the zoom a little more but you get the idea.
Hope you enjoy
Brent