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High cell count, when to add a receiver pack?
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bigair78
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High cell count, when to add a receiver pack? - 05.04.2006, 11:05 PM

I am thinking of running 8 to 10 cells on my 8s/mgm combo. At what point do I need to add a rec. pack so I don't damage my servo and stuff?
   
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BrianG
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05.04.2006, 11:12 PM

Most controllers I've seen say no more than 12 cells. Otherwise the linear regulator heats up too much and in turn causes the ESC to overheat quicker. 8 to 10 cells should be fine, but some people still use a BEC or receiver pack anyway to fully take that load off the ESC. Receiver packs are relatively heavy compared to a small UBEC, so you might want to check into that...
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MetalMan
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05.04.2006, 11:24 PM

10 cells will be fine. I use 4s Lipo with the BEC on my Mtroniks Genesis Truck.


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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bigair78
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05.04.2006, 11:49 PM

I'll just be running 10 cells to prove something to one of my friends new jato. After I smoke him, he probably will not line them up again.
   
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bigair78
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05.05.2006, 12:52 AM

What would be a good gearing start for 8 or 10 cells in a stampede with m2ks?
   
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Serum
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05.05.2006, 01:07 AM

In the usermanual of this controller is this list you can use about the BEC. Did you checked this?
   
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bigair78
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05.05.2006, 01:51 AM

What do you mean?
   
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MetalMan
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05.05.2006, 08:42 AM

There is a page in the manual that shows how much voltage the BEC can handle and how many amps it can put out to the receiver/servos at different voltages.


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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05.05.2006, 10:02 AM

http://www.mgm-compro.com/manuals/ma...x-3cb-v230.pdf
   
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cart213
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05.05.2006, 12:26 PM

Since you're only doing a quick speed run, you should be able to gear up a bit. What is your normal gearing on 6 cells?
   
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bigair78
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05.05.2006, 01:31 PM

I really don't have a normal gearing. I have been playing around with alot of different ones. Based on the temps of the motor though I need to go down a few teeth on my pinion. 19/87 is what I ran last night.
   
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bigair78
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05.06.2006, 08:59 PM

What is a good temp for the 8s? I ran it on 10cells today and it got hot quick.

I pretty sure the gearing is only good for a few runs.
   
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05.07.2006, 04:04 AM

with the 3S lipo on my rc10, it didn't get too hot.
   
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bigair78
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05.07.2006, 04:09 AM

I'm running m2k's and 19/87 gearing. The motor was probably 200 degress. The controller was probably 120 degrees. And it was cool out today. I went down to a 16 tooth and I'll try that tommorow.
   
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05.07.2006, 04:11 AM

200 is too hit.

I don't know the gearing ratio of the rest of that gearbox.

You have got an infrared tempgun?
   
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