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To many volts? - 1/12/2013 11:28 AM   
Cougar-RCU



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Status: offline 		Hi gang. I am getting a starter that says it can handle 12 to 18 volts.
would a LiFe 19.8 Volt hurt the Starter buy just being 1.8 volts over?

http://www.hobbyking.com/hobbyking/store/__17823__Turnigy_4500mAh_6S2P_30C_LiFePo4_Pack_USA_Warehouse_.html

There is also another type that is 16.6 volts as well that I could get. I thought about running two 7.2 in series but found these other one's
So why bother with two battery's? or does running them like that give you a better option?

Thanks for any help.



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RE: To many volts? - 1/12/2013 12:41 PM   
Goldenduff


 

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Status: online 		I would say it would be fine using the life. Amps not volts is the big killer ad the starter will draw the amps it requires.

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RE: To many volts? - 1/12/2013 12:44 PM   
Cougar-RCU



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Status: offline 		Thanks very much for the info,

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RE: To many volts? - 1/12/2013 1:55 PM   
Cougar-RCU



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Status: offline 		Another Question as I am still confused a bit LOL
Like the above 19.8 volt $$$ and these below are a bit cheaper

This starter I am getting is a 6.1 geared ratio. from 12 to 18 volts.

So I am also looking at the LiFe 4200 MAH @ 30C @ 13.2 volts
and also the LiFe 4200 MAH @ 30 C @ 16.5 volts.
So what Will the diff be between all 3 of these for a days use? or power ?
Would I be just fine with the lesser volts?
Or maybe the better thing to do, is ask what one would you use?

Not sure if I am even asking my question right. Sorry.





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RE: To many volts? - 1/12/2013 2:52 PM   
JNorton



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Status: offline 		The higher voltage you supply to a DC motor the faster it spins and the more current drawn. More current less battery life. All your batteries have the same capacity. Seriously - anything you've listed should work. I'd use the highest "C" rated batteries with the highest capacity that will physically fit and stay within the voltage rating of the motor. I never like to push voltage limits.
John

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RE: To many volts? - 1/12/2013 3:52 PM   
Cougar-RCU



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Status: offline 		Thank You John.

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RE: To many volts? - 1/12/2013 4:36 PM   
pilotpete2



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Status: offline 		Also, remember that the nominal voltage for a lipo (3.7V per cell) is when it's almost outa gas. You should really make your choice based on the fully charged voltage. A 4S pack is 16.8 fully charged, so a good choice for this application, a 6S pack would be 25.2V! Spin baby spin!!! Also, since that's a geared starter, you may even be good on 3S.
As John said, the lower the voltage that's able to do the job, the longer your starter will last.
Cheers,
Pete


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RE: To many volts? - 1/12/2013 5:07 PM   
Cougar-RCU



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Status: offline 		Thanks Pete,
So I think I will go with this one then?

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=24190

Good Choice? Remember the starter is already geared at 6.1
this one is at 16.5 volts ( 30C constant and 40C burst )

Jeff

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RE: To many volts? - 1/12/2013 8:42 PM   
pilotpete2



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Status: offline 		not really 16.5V, but actually 21V fully charged. Don't be misled by the nominal voltage rating of batteries
Pete


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RE: To many volts? - 2/3/2013 8:46 PM   
Cougar-RCU



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Status: offline 		Got'Er Done.... Thanks Guys.. even used the project box.
Kicks BUTT !


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