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snellemin
2 KiloWatt RACER
 
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03.28.2008, 03:27 PM

The voltage was at 10+ when I started running. Going to measure how much juice my 2lbs camaro sucks.

I had to put the fan back onto the mamba ESC as well. It reached 205F in a hurry and the motor was about 139F after 5 minutes or so. I have to reduce the punch control to reduce the wheelies and amp draw.


6 KiloWatt A123 Racer
GTP-Pletty Big Maxximum+RX8. GTP-C50-6L Hacker+RX8. CRT.5-Pro4+ZTW esc.
24s2p EVG SX 49.6mph Ebike.
18s4p Raptor 60mph Ebike. 11.5KW
   
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othello
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03.28.2008, 04:14 PM

In 2p config you could expect even more from A123 cells. I see Amp peaks of 100-120A used as 10s1p (My eagletree v1 is rated for max 100A). So if your ESC and Motor is able to provide/suck 200-240A, your battery pack would provide it for short bursts. At 100A as 1p config voltage could drop to 2V (i see a range from 2 to 2.4V). It really depends on cell temperature and cable length.

From a Power point of view i calculate with a max of 250Watt per A123 cell (110A@2.25V). So 3s2p are able to provide up to 1500 Watt (and maybe a little bit more when you warm them up before driving). There is also a feelable difference in power when they come fresh from the charger as when you drive them say 1 day after you charged them.


Brushless 1:5 custom 4wd Baja based on 1:8 truggy chassie
Jazz 55-10-32, Neu 1515/2Y (1100kv), 9s2p A123 (27v), up to 3.1KW
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