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Old Sep 18, 2012, 08:14 PM
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United States, FL, Tampa
Joined May 2012
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Using a lipo to power a RX

I'd like to power my RX with a lipo instead of a nimh for my nitro planes.

I've got a few planes varying in size from a GP Cherokee, a Big Stik 60, and a GP P-40 Warhawk. I'm just not sure what size battery I should be using, and the BEC or ESC/BEC combo.

Will this combination work?

http://www.hobbyking.com/hobbyking/s...dProduct=13925

http://www.hobbyking.com/hobbyking/s...arehouse_.html

Thanks for your help!
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Old Sep 19, 2012, 09:46 AM
miniture aircraft pilot
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United States, FL, Tampa
Joined Oct 2007
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a lipo and a bec will do the trick. just like a power box set up for 3d planes.

where do you fly?
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Old Sep 19, 2012, 10:01 AM
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Delaware, Ohio
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http://www.hobbyking.com/hobbyking/s...arehouse_.html

Just use this and forget the BEC
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Old Sep 19, 2012, 11:20 AM
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United States, FL, Tampa
Joined May 2012
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I fly at SparksRC in st petersburg, fl.

Does that battery have the correct connector to plug into my spektrum receivers?
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Old Sep 19, 2012, 03:46 PM
miniture aircraft pilot
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United States, FL, Tampa
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it says it has a jr adaptor. so it will fit a spektrum. just make sure the servos can take that voltage.
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Old Sep 19, 2012, 03:56 PM
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United States, FL, Tampa
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how do I make sure that the servos can take that voltage? Wouldn't a BEC do that for me?
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Old Sep 19, 2012, 04:28 PM
miniture aircraft pilot
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United States, FL, Tampa
Joined Oct 2007
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some of the older servos didn't like over 6 volts. Usually a bec can be changed between 5v and 6 v. I run my converstions at 5v to be safe. unless you really need high speed 6v isn't going to be noticed. and on a p40 you really don't need high speed servos.

you would have to look up their specs on each sevo.
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Old Sep 19, 2012, 04:31 PM
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USA, CA, Oceanside
Joined Jul 2008
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A 2S of around 750-1000Mah will power what you have for Multiple flights without recharging.

I use Lipos exclusively in my glow planes and always use a CC BEC. Have never had one hiccup.
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Old Sep 19, 2012, 05:09 PM
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United States, OR, Canby
Joined Aug 2011
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This one has the proper connector.
http://www.hobbyking.com/hobbyking/s...iver_Pack.html

I use the 2100mah version of this one in many of my planes. Good with any servo rated for 6v. Most good Lipo chargers have a setting for these batteries. They also are not as much as a fire hazard as Lipos. And no regulator to fail.

http://www.hobbico.com/radioaccys/hcam6415.html
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Old Sep 20, 2012, 06:28 AM
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Plus 1 on the LIFE packs!
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Old Sep 20, 2012, 08:10 AM
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United States, FL, Tampa
Joined May 2012
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What size Lifepo should I be using for my GP Cherokee? Looks like my option are 750mah to 1500mah
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Last edited by SohoR1; Sep 20, 2012 at 08:24 AM.
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Old Sep 20, 2012, 11:36 AM
miniture aircraft pilot
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United States, FL, Tampa
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i like 100mah in most of mine. Although a standard 4cell nicad was only 600mah for a 4 servo plane.
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Old Sep 20, 2012, 11:37 AM
miniture aircraft pilot
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sorry 1000mah
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Old Sep 20, 2012, 11:47 AM
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Delaware, Ohio
Joined Nov 2006
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I know the picture shows different it will come the same as the 700mah battery. (I have both) No adapter is required.

http://www.hobbyking.com/hobbyking/s...arehouse_.html

Jim
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Old Sep 20, 2012, 11:53 AM
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United States, OR, Canby
Joined Aug 2011
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Quote:
Originally Posted by SohoR1 View Post
What size Lifepo should I be using for my GP Cherokee? Looks like my option are 750mah to 1500mah
The ones linked in my post, #9 are more than 1500mah, as high as 3200mah. I like as much as I can fit in the plane, generally a 2100mah for a plane the size of the Cherokee.

Maybe not the best prices but a list of whats available from one brand.

http://www.towerhobbies.com/products...hcam6415m.html

Another option with standard JR plug.

http://www.hobbyking.com/hobbyking/s...ter_Pack_.html

Do not go by pack voltage to determine when to stop flying, go by MAH used like with a Lipo.
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