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Evx - Lvc
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Evx - Lvc - 02.18.2007, 12:27 PM

I have seen a few people doing the LVC and it looks a little iffy to me the way they are doing it. With the 4s LVC, not running a Rx pack you will have one battery draining more than the other. Whats going to keep that pack from draing past the LVC if the other pack is higher voltage to compensate? Seems like it needs two LVC's, but that could be a potential issue as well.
   
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02.18.2007, 12:53 PM

Using two LVC's isn't the way to to go.

I personally am only using an external bec.

But; You can buy lvc's that monitor the individual cells. this would eliminate the problem as you are describing it.

check the cellshield from dimensionengineering;

http://www.dimensionengineering.com/

BTW topic moved to general electric.
   
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02.18.2007, 12:59 PM

yea, the individual cell monitor is ideal.
   
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02.18.2007, 01:03 PM

And since they do exist, you can use them.

http://www.rc-monster.com/forum/showthread.php?t=3825

here, i was just as enthusiastic about them as you are
   
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02.18.2007, 01:52 PM

Pretty cool, is there any issues running the dimension one with cars? (says not for car use).
   
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02.18.2007, 02:28 PM

Well; they are coming with a car-version. metalman knows more about this.
   
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02.19.2007, 02:53 AM

Dimension doesn't really have any interest in developing the CAR version. I tried to get them to do it, but they apparently have "better" things to do.
I have the only known CellShield made for car use. It's a beta version, so it isn't perfect. Unfortunately John from Dimension Engineering seemed to stop responding to me while I was testing the device.

As it is, I no longer use the CellShield CAR version. It's got a few problems from what I have found:
-slow response to voltage depression (in cars, voltage depression is quick, and it can't keep up)
-resets as soon as you hit neutral (not a good thing when you potentially have expensive batteries resting on its judgement)

What I do like about it:
-easy to use (no polarity)
-adjustable cutoff voltage from 2v-3.5v
-up to 6s (I only use 5s)
-cheap (mine's a beta so it was free :p )

If you guys contact Dimension Engineering and request the CellShield CAR version be produced, then I can try to continue testing mine and reporting to John to make it even better.


SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz
   
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02.19.2007, 03:32 AM

Is there an issue with the standard Cell Shield in a car application? Whats the difference between the car version and the regular verson?


I can't decide if its more fun
to make it...
or break it...


Silent...But Deadly


   
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02.19.2007, 12:35 PM

It's made for an airplane (same issue we car guys have with other airplane LVCs). Airplanes have neutral throttle with the stick all the way down, and we have it at a point between forward and full brake/reverse.


SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz
   
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02.19.2007, 12:36 PM

I believe the standard version will go to full brake or even worse full reverse when the low voltage kicks in.

*you beat me to it metal...*
   
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