Very cool, very cool indeed... i've been checking out your progress from the shadows for a bit and normally don't post much (first post here) but i've been very impressed with what you've accomplished so far and am intrigued to see if you can reach that 60 min mark...
I also dig that you are actually doing real flight tests vs just static hover tests, whats the weather conditions like there?
Are you still using the 2 sanyo 3450 mah cells from the first post? and if so how many flights have you done with them so far?
The best cells I have used are 21700 Samsung 5000mah... Even when pushing 20amps through these cells test have shown they still give 4000mah.
So by overcharging them to 4.4v per cell (do at your own risk! Very dangerous!!!) I get close to the 5000mah at just under 150grams per battery pack.
So you take out the factory battery use the bms put this on top and you have a mini that weighs 300grams. Can't beat that!