best performance hop-up for speed 400

[fmolzer]

I just bought a sky arrow from sigmfg, it has a direct drive speed 400 spec, (pusher prop) with a 7-8 cell 5-600 mAmp spec.

My question is: I believe the flying time on one pack with this configuration will be about 5, maybe 6 minutes. If I want to extend the flight time and increase overall power, what are my options. Obviously I want to keep weight down as much as possible. Money is not a big issue (within reason). Do I go brushless? are there other props, motors, batteries that I should use. The goal is more runtime per pack, more power, little weight penalty.

Any input from the gurus in this forum?

[pease1]

If money is not an issue, then the Astro 020 direct drive is your answer. It's more efficent (longer flights) and more powerful. It will run on your same batteries.

[fmolzer]

That is a brushless motor right? What speedo would be a good choice and also, are there batteries out there that would increase airtime even further?

Thanks for your help.

Fredrik