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HomeAircraftHelicopterAlignT-REX 700N › Best battery pack for balancing a trex 700N
04-11-2010 12:08 AM  8 years agoPost 1
Amarjit

rrApprentice

Chicago, IL

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hi everyone

looking for some advise as to the best battery pack for balancing the trex 700N. I am planning on installing vbar, and would like to know what most people use

Thanks again!
andy

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04-11-2010 12:14 AM  8 years agoPost 2
george0079

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USA

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There's alot more to it than that. You're gonna have to figure out how much weight you need in the nose.

Every setup is going to be different, depending on what equipment is being used, and where it's located..

Hell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!

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04-11-2010 12:48 AM  8 years agoPost 3
Amarjit

rrApprentice

Chicago, IL

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Thanks for the info
Hi there,

I appreciate your time. just curious to know what other people are using to balance their helicopter with the standard equipment. With or without regulator, etc. I have a 600N vbar that is balanced perfectly. But it took a bit of trial and error

Best,
Andy

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04-14-2010 01:41 AM  8 years agoPost 4
mjy1288

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Mt Airy, MD USA

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I use the Duralite 7.4V 4300 4cell 2S square pack on mine and it is balanced very well, I also have a switch-glo, Rev-Max and Duralite regulator mounted up front. Like said previously, you may need to move things around in order to find the best balance.

below is a pic of how I have my battery mounted

"Big" Mike

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04-14-2010 03:37 AM  8 years agoPost 5
gorn

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Western Australia

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Im running an Outrage 2s 2500 pack.
Servos are ACE DS1015 on cyclic, BLS251 for tail and Ino Lab 760HB for throttle.
Voltage reg is a Dualsky VR8L. Futaba GV1 gov.
Futaba FASST 14ch rx.

With a full tank, mine was still quite nose heavy, so as the tank drained it got worse and worse.
I have added lead weight to the tail.

Heres what you do to determine what pack that "you" should run for your setup.

Mount all electronics except a pack.
Fill your tank to as close to half as you can get.
Lift from the flybar when it is across the heli.
Now add weight to the nose til it balances out level.
Doesnt matter what you add, so long as it is a similar physical size to a pack.
When your happy with how level the heli is, remove the weights and weigh them.
THEN go research packs that will fit that weight range for you.

I have had people call the shop and tell me their heli will not balance properly unless they have a 2s 5000 pack on their.
Makes me laugh hard every time, some people have no clue as to how you balance a heli.

Makes a HUGE difference in constant piro moves and rolling moves.
Before adding weight to the tail of my 700, to get an axial roll, I had to correct mid roll.
It was a PITA.
Now it will pretty well roll perfect.
Piro circuits are now much easier as well.

Hope this helps

For the love of the hobby

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04-15-2010 12:04 AM  8 years agoPost 6
Gernejr

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Miami, Fl

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Gorn has it right. i looked for a month before i find 2s 3000 that weight 140grams ebay go figure...

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04-16-2010 02:40 PM  8 years agoPost 7
stg099

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Chicago, Il, USA

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Good tip Gorn. Just balanced my 700 and found that it did infact need a 2s 5000 NRG pack to balance properly (207 Grams)and my 600 balanced perfectly on an outrage 2s 3600 pack (~150 grams).

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04-16-2010 11:51 PM  8 years agoPost 8
HiroboFreak

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Central Coast, NSW, Australia

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Be careful buying packs online though.

There's been a couple of times where the published weight of the pack has been incorrect. Very frustrating.
I don't have a LHS that stocks anything decent.

Compare actual pack weight as opposed to the online claimed weight Gorn.

T-rex700n VBar 5.3 Pro | T-rex700e DFC VBar 5.3 Pro | JR DSX9
Team RCBits | Team Lynx

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04-17-2010 03:32 AM  8 years agoPost 9
Gernejr

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Miami, Fl

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stg099 Are you using a header tank? I running 7100R, swithglo,Gy520 worried how some are able to run 200g battery compare to my setup.. I can only think you use a header tank .And you cecking CG full tank or half tank. I check at half tank fuel myself as your never full or empty for very long ...

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04-20-2010 12:46 AM  8 years agoPost 10
stg099

rrNovice

Chicago, Il, USA

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I'm using a half tank of fuel, without a header tank. It balanced perfectly with the 5000 pack without the canopy, likely it'll be a tad nose heavy at half tank with the canopy on.

I was shocked that it really took 200 grams to balance it but it did.

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04-21-2010 01:47 AM  8 years agoPost 11
Gernejr

rrKey Veteran

Miami, Fl

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stg009 when you put that canopy on with full tank it will be more than tad nose heavy and even more so when half tank... Now if your good 3Der it willnot affect your flying but i think as more guys go FBL it will become even more important..

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04-21-2010 07:38 PM  8 years agoPost 12
Mike Fortin

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USA

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Thunder Power 2600mah.

The right size and weight for a perfectly balanced machine.

Have Rotors, Will Fly!

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04-22-2010 12:09 AM  8 years agoPost 13
Gernejr

rrKey Veteran

Miami, Fl

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Mike nice battery perfect for your heli.. I would be tail heavy if i used it.

Every heli has a perfect battery you just have to find the right weight with the most MAH.........

Sponsored by Visa

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05-31-2010 03:46 AM  8 years agoPost 14
bigonexeon

rrNovice

Melbourne,Vic - Australia

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i was thinking about putting a Thunder Power RC Pro Lite MS 16C 8000mAh 7.4V 2 Cell LiPo 2S4PL 8000 Lipo Battery into my trex 700 good idea bad idea any comments?

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05-31-2010 03:54 AM  8 years agoPost 15
gorn

rrElite Veteran

Western Australia

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how much does the pack weigh?

Follow my tips above on how to work out correct battery weight for correct C of G.

What would you need 8000mah for anyway?
My 700 eats a jug of nitro in 6 flights.
So I change my pack over after each 3 flights.
Not like its hard to do lol.

For the love of the hobby

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