3.7 pounds for the .46 size eh? Sounds like you build light in the first place.
Ya, i scraped out a lot of the hard wood the suplied and built it mostly with contest grade wood. At 5,480ft it would seriously ROCKET striaght up forever if i wanted at full throttle, most flying was done at 1/3 throttle.
Flight times will depend on the Amps you draw, and how you manage your throttle. I would imagine that with a total of 4200mAh at your disposal, and a peak current of ~35 Amps, you can easily run 10 minutes or more with throttle management.
Ok, so how will i determine amps drawn? And also regarding batteries, the 2100mah pack wont be enough? You mentioned 4200mah, so with the 2100 i could fly around 5 min?
Thanks for the help so far, i will be ordering all the stuff soon.
David