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Home✈️Aircraft🚁Helicoptere-AlignT-REX 450 › Align 20c and 22c lipos
05-26-2007 10:35 PM  13 years ago
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gixxernoob

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fairfax, va

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Align 20c and 22c lipos
My batteries ran almost 40 flights and suddenly it has the puffing effect which eventually lead to failure in flight and crash my heli.. Have you guys experience it wherein it lost power while in the air.. what is the deal with align batteries? are they just POS...
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05-26-2007 11:05 PM  13 years ago
docjoe

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Stockton, CA United States

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How hard are you pushing those batteries? I've seen batteries give out if you use them for too long (draining every last bit out of them) which is not good for the battery. Also, if you're really flying hard, the ESC can get really hot and cut off, causing a loss of power also.Joe
We haven't seen Colonel Angus around these parts for years!
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05-26-2007 11:45 PM  13 years ago
Corona44

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Sydney,NSW Australia

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I have 2 badly puffed up batteries that I continue to use.

They are no good for heavy duty stick pumping stuff but still give 8 minutes of hovering and general sport flying so why throw them out if they still have some usefull life and they still take back about 1700mA.
Flying, crashing & having a ball.
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05-27-2007 02:03 AM  13 years ago
gixxernoob

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fairfax, va

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I'm just doing figure 8's and pirouttes with those batteries but for some reason they just quit on me... I would never buy those batteries on my next purchase to me they are just POS... I'll stick with the TP's... ****btw what is the method of disposing them?
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05-27-2007 06:20 AM  13 years ago
Tail_BoomStrike

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N.A.

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Remove the heat shrink wrap. On each cell, cut a slit on each cell. Soak them in water with salt in it overnight.

I got the 22C BTW sitll new but I'm loving it. I'm running 430XL motor, 13T governed only at 3000rpm HS. It got broken in 1 min initially 0* pitch on the ground. Then 5 times for 3 min each at 10A. I get to fly with it today medium 3D 4min. So far the power is way better than my 2006 version 3SX. I'm gonna wait till the 10th-15th cycle, break in excluded to see what the guys puffing it are trying to say. My set up is pulling 29 amphs @ -10* full negative on the ground, with HS dropping 2630rpm, and the HS is holding 3000rpm @ -5* quarter stick (I forgot to read the amph draw ), hovers @ 16.75A (at that HS, 4* pitch is all that's needed to keep the heli in the air). 29 amph @ -10* on the ground, so, doing 3D applying full cyclics, maybe max amp draw is barely touching or barely exceeding 35A for short instances. Weather temperature during test run was about 80*F, and temperature on the pack after flight of 4 min was 121*F, not realy bad. The 2006 version 3SX was tested earlier with the surrounding temperature of 91*F, and the pack after flight of 4 min has 136*F. That is not a fair comparison. It's just that the power on the 22C was way better. But I got to wait 'till the 10th cycle to see if it would puff...
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05-29-2007 12:21 PM  13 years ago
gixxernoob

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fairfax, va

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hey tailboomstrike,

let me know how it turns out after so many cycles on the battery... btw the soaking salt method was also suggested by one of my LHS guy... I did it and it seems to work... btw do you cut the wires? or leave it as is and just slit the cells? I didn't know your from VA beach I was just there during the memorial day weekend and flew my heli on the oceanfront...
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05-29-2007 02:08 PM  13 years ago
bilbo

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Boston, MA - USA

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Just FYI, the fact that you're only flying pirouettes and figure 8s doesn't mean you aren't pushing your batteries too hard. If you're consistently running them down below 20% of their capacity then that'll kill your batteries faster as well, even better brands. For 3S batteries, I try to time my flights so the battery is around 11.4 volts after a flight.
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05-29-2007 06:45 PM  13 years ago
Tail_BoomStrike

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N.A.

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gixx

I get to test the packs for the 2nd cycle this weekend. It felt much stronger this second time around. Same deal, I have to bring her down when the alarm go off by 4th min. 3.80V per cell. No puffing yet. But the improved punch pumping the collective was very noticeable compared to the 1st cycle. When moving the collective negative to positive and vise versa, for piro flips, I'm over shooting it, so I have to adjust my pitch curve before I take it out again for the 3rd cycle. I think it's now fully broken in. I did puff one of my 16C's BTW. But after it cooled down it looks like normal. I forgot to mention earlier, Ihave the esc set to high timing and quick response. Runs cooler than medium timing. Amph draw is lesser. that might fix your problem.......
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05-29-2007 07:51 PM  13 years ago
Wingman77

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Pulaski Tennessee

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whoa, high timing runs cooler????? and less amp draw? does it give more power someone else told me it did.
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