Epoch Indoor Racer - epoch1-43.com

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  #1  
Old 10-12-2005, 08:39 PM
cdog4w's Avatar
cdog4w cdog4w is offline
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Default 2s lipo vs. 2p lipo?

Just how much voltage can the epoch PCB handle? I searched here and at ripper and couldn't find a number (though I thought someone had mentioned a number).

Reason I bring this up is that I received a 2s kokam 145 lipo (cute little thing) when I bought something else from a user. Now I know I could cut the thing up and flip a cell over so that it will run as a 2p pack. I'd assume that with the alum solder already on it I should be able to do this. While I could do this, I got to thinking about other options.

What if we used a voltage regulator along with the 2cell lipo to keep the voltage at a level the epoch PCB likes.

pros:
-higher voltage, could match a 4 cell with a 5V regulator, perhaps more if the PCB could handle it
-more stable voltage
-no need for me to cut up the pack

cons:
-poor efficiency (5V regulator is around 63% eff assuming a battery voltage of 8V, 6V regulator is 75%)
-less runtime than if in parallel config (tho more than stock cells at rated mAh)
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Old 10-15-2005, 07:50 PM
LBRC LBRC is offline
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Default

The steering starts to really spaz out right around 5 volts.
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  #3  
Old 10-16-2005, 06:34 PM
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cdog4w cdog4w is offline
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Quote:
Originally Posted by LBRC
The steering starts to really spaz out right around 5 volts.
Doh, so I'm stuck with a 4.8V or so regulator to keep the steering from spazzing, yet that leaves a REALLY inefficient regulator. Oh well, I guess I'll break the pack open and flip one of the cells.

Thanks for the help LBRC.
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