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High cell count, when to add a receiver pack? |
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(#1)
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Guest
Posts: n/a
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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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(#2)
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RC-Monster Admin
Offline
Posts: 14,609
Join Date: Nov 2005
Location: Des Moines, IA
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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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(#3)
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RC-Monster Mod
Offline
Posts: 5,297
Join Date: Mar 2005
Location: SoCal
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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.
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(#4)
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Guest
Posts: n/a
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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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(#5)
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Guest
Posts: n/a
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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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(#6)
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RC-Monster Admin
Offline
Posts: 10,480
Join Date: Feb 2005
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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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(#8)
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RC-Monster Mod
Offline
Posts: 5,297
Join Date: Mar 2005
Location: SoCal
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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.
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(#10)
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RC-Monster Carbon Fiber
Offline
Posts: 484
Join Date: Dec 2005
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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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(#11)
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Guest
Posts: n/a
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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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(#12)
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Guest
Posts: n/a
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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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(#13)
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RC-Monster Admin
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Posts: 10,480
Join Date: Feb 2005
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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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(#14)
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Guest
Posts: n/a
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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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(#15)
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RC-Monster Admin
Offline
Posts: 10,480
Join Date: Feb 2005
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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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