5 Cell Pack Without Regulator???  
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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> 5 Cell Pack Without Regulator???
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5 Cell Pack Without Regulator??? - 5/12/2007 4:42:24 PM   
DKflyer


 

Posts: 123
Joined: 10/11/2002
From: Yorktown, VA, USA
Status: offline 		I have been reading multiple posts on battery setups, and I have seen multiple posts of using a 5 cell pack with a regulator. My question is why is the regulator needed?? I thought you could use a 5 cell pack straight into the receiver. The servos usually give torque specs at 6 volts. What am I missing?? I have only used 4 cell packs in the past, but with reports of Spektrum recievers being very voltage sensitive I was considering a 5 cell pack.

Thanks,

DK
       Post #: 1

RE: 5 Cell Pack Without Regulator??? - 5/12/2007 4:52:17 PM   
Gringo Flyer



Posts: 2249
Joined: 1/16/2004
From: Formosa, ARGENTINA
Status: offline 		For the most part you can run a 6V pack no problem. I use them almost exclusively and don't use a regulator.

You do need to check your gear to make sure its ok though. I have some Futaba digital servos that are not recommended for 6v.

I prefer 6v its an easy way to get more out of your servos.


_____________________________

"Courage is being scared to death...and saddling up anyway."---John Wayne

(in reply to DKflyer)
       Post #: 2

RE: 5 Cell Pack Without Regulator??? - 5/13/2007 1:55:56 AM   
dirtydave



Posts: 11
Joined: 9/19/2003
From: Baton Rouge, LA, USA
Status: offline 		Just last week I put a just charged 5 cell pack in my P51, turned on the switch and.....nothing happened. I mean, the servos were powered up, but the tx was not activating them. I was using a JR 9 channel PCM rx. When I borrowed a regulator and put it in series with this battery, all was well again. Checking the voltage on this pack showed 7.4 or 7.6 volts (remember - it was just charged) and apparently this is too much for this JR rx. It worked fine on the stepped down 6 volts the regulator provided. I just ordered via ebay a couple of regulators for about $12 bucks apiece plus $450 shipping . I'll try one on one of my beater planes and see if they hold up.
Dave

(in reply to DKflyer)
       Post #: 3

RE: 5 Cell Pack Without Regulator??? - 5/13/2007 3:49:56 AM   
Gringo Flyer



Posts: 2249
Joined: 1/16/2004
From: Formosa, ARGENTINA
Status: offline 		Sometimes a new 6volt pack with a fresh charge will take a few seconds to settle down. I am not familiar with JR equipment but with Futaba I have seen the servos wobble some with a brand new pack. It generally takes 10 or 15 seconds of the plane being on for the voltage to drop enough so that this doesnt happen.

This only happens with a just charged pack and it only seems to happen with brand new packs. After a month or so of use I havent seen this happen.

Maybe thats the case with the JR.


_____________________________

"Courage is being scared to death...and saddling up anyway."---John Wayne

(in reply to dirtydave)
       Post #: 4

RE: 5 Cell Pack Without Regulator??? - 5/13/2007 12:08:15 PM   
Flying freak


 

Posts: 1363
Joined: 6/29/2006
From: granby, QC, CANADA
Status: offline
quote:

ORIGINAL: dirtydave

Just last week I put a just charged 5 cell pack in my P51, turned on the switch and.....nothing happened. I mean, the servos were powered up, but the tx was not activating them. I was using a JR 9 channel PCM rx. When I borrowed a regulator and put it in series with this battery, all was well again. Checking the voltage on this pack showed 7.4 or 7.6 volts (remember - it was just charged) and apparently this is too much for this JR rx. It worked fine on the stepped down 6 volts the regulator provided. I just ordered via ebay a couple of regulators for about $12 bucks apiece plus $450 shipping . I'll try one on one of my beater planes and see if they hold up.
Dave


how much did you pay shipping?i hopeing thats a typo...

(in reply to dirtydave)
       Post #: 5

RE: 5 Cell Pack Without Regulator??? - 5/13/2007 2:44:22 PM   
dirtydave



Posts: 11
Joined: 9/19/2003
From: Baton Rouge, LA, USA
Status: offline 		Oops.... I stand corrected! Actually, I looked back and the regs were about $9.50 ea, shipping was $4.50

(in reply to Flying freak)
       Post #: 6

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