oops
Posts: 664
Joined: 2/26/2005 From: Perth, AUSTRALIA Status: offline
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Those batteries are too heavy and too underpowered... Even if you get three of them. I've tried it with 2 and 3, which I took from Laptop batteries. It just hovered in ground effect. Anyway, you want something 1200 mAh max anyway. And about 7 to 8 amps draw capacity or more. And certainly to have the capability to supply that current at full voltage. The round batteries have current limiters built in. That causes a reduction in the available voltage, which means lower voltage at the motor, and lower headspeed = no flight. Look for a small flat LiPo pack.... Something around 7C minimum... Mine flies really well with a 1200mAh 10C battery And flies for ages. I'm also the one who clips rotor blades. If you clip them symmetrically, they are fine, and besides, they are not that balanced to begin with. Too much variance in the manufacturing technique. Don't beleive me? Wait until you lose a full centimeter from the tip of one... Sure, it will shake, but it still flies OK. Not that you should leave it like that, of course. A missing centimeter is way too much. (Any missing is not good). You can also add an 8 cell battery as well. That works pretty well. The extra weight needs more headspeed to get liftoff, and supplies more voltage as well. David
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