Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 700 Class Electric Helicopters


700 Class Electric Helicopters 700 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


Reply
 
Thread Tools Display Modes
Old 12-21-2012, 10:47 AM   #1
jon302v8
Registered Users
 

Join Date: Jun 2010
Location: Pittsburgh
Default 12S 4000 okay for mild 3D?

I'm looking at a 700 size heli and the 700e DFC HV super combo pricing looks attractive...

However for cost reduction and flexibility I would like to share 6S4000 packs with my Gaui X5.

Doing a search it appears 12S 4000 is on the low end of what people run here. What do you guys think?

I fly mild big sky 3D and I'm just getting into tic-tocs, etc.

I guess my other option is some sort of stretched 600 w/ 12S.
jon302v8 is offline        Reply With Quote
Old 12-21-2012, 03:08 PM   #2
flyinghigh450
Registered Users
 
Posts: 4,086
 

Join Date: Sep 2010
Location: Shelby Twp,Mi
Default

I wouldn't go lower than 4000mAh..I ran 5000mAh packs in mine and always used more voltage than mAh..Packs always come down at 35ish % left in them but voltage per cell was about 3.70V ..
Best I could tell ya is try them and set the timer for 3:30 and check the packs after each flight..If you have alot left,turn the timer up 30secs each flight...You already have them so why not?

If I ever get another 700E,I would for sure go with 4300 mAh or 4500mAh packs ..
__________________
Team Align
flyinghigh450 is offline        Reply With Quote
Old 12-21-2012, 03:51 PM   #3
stevehof
Registered Users
 
Posts: 1,352
 
My HF Map location
Join Date: Jul 2009
Location: Oceanside, CA
Default

Quote:
Originally Posted by jon302v8 View Post

I fly mild big sky 3D and I'm just getting into tic-tocs, etc.
Depends on how your define 'mild'... I fly what I call easy slow 3D with my E7 with 4000 mah batteries and I get 5.30 minutes and come down at 3.75-9 per cell depending on how hard I'm pushing during the flight. I spend a lot of time near center stick on collective. If you are easy on the collective, you may be happy with 4000 mah batteries. If you fly a lot of fast forward with the stick at 85-100% full or are spending a lot of time on learning tic-tocs.....fogetaboutit on the 4000 mah batteries.
__________________
Synergy E7, Vbar 5 Pro, BLS255 & 256HV, Hacker Turnado 530 Edition, Rail 716, CC120, WR Sup BEC, Scorp BUG | Trex 450L, Vbar Pro, MKS 8910A+ on tail, Talon 35 | Futaba 18mz
stevehof is offline        Reply With Quote
Old 12-21-2012, 04:00 PM   #4
andersn
Registered Users
 

Join Date: May 2012
Location: norway
Default

you can do hard, if the c rateing is good and packs are good
__________________
honey bee king II
andersn is offline        Reply With Quote
Old 12-21-2012, 05:16 PM   #5
K2Freak
Registered Users
 
Posts: 3,730
 
My HF Map location
Join Date: Mar 2009
Location: Samish Island, WA
Default

OP, I run 3800 Gens Ace and get at about 5-6 minutes on 800 size. If I did nothing but hard tic-tocs, I could probably burn these in 4-4:30, but I time 6:00 and can't remember going more than 20%. I'm running 1750-1850 hs which I think makes a big difference. I'm probably about the same stage as you are (cleaning up tic tocs and piro flips, etc.) so IMO a good 4000 pack is just fine. The lighter weight gives back some flight time too.
__________________
700E CHP DL 780mm / VBar Silverline / KDE 700XF / HK-4525 / YGE 160HV / MKS DS660A+ / MKS DS760 / Gryphon Quasar / Scorpion BUG / KDE / Futaba T12Z

97
K2Freak is offline        Reply With Quote
Old 12-21-2012, 07:51 PM   #6
Eddge
Registered Users
 
Posts: 135
 

Join Date: Mar 2011
Location: Gloucester, Virginia USA
Default

I use 4000's on my 700 and fly hard for 5 minutes. I wouldn't call it 3d, but the collective is maxing in both directions with 14 deg pitch. Running 1800 HS helps alot with the flight time, the light weight helps the performance. Keep the revs low and you will love the 4000s.
__________________
Align Trex 700 V2 DFC
Skookum SK540
I don't want no stinking Goblin!
Eddge is offline        Reply With Quote
Old 12-21-2012, 08:12 PM   #7
theflyingman2
Registered Users
 
My HF Map location
Join Date: Jan 2007
Location: Winter Haven, FL
Default

I would have to guess yes. I have always ran 5000s but am buildings a new kit now and am planning on using some 4400s for a lighter machine.
theflyingman2 is offline        Reply With Quote
Old 12-21-2012, 08:34 PM   #8
504Rone
Registered Users
 
Posts: 2,524
 

Join Date: Sep 2008
Location: New Orleans
Default

They will work and you can get about 4 mins. Heli feels kinda floaty with them.
__________________
NO FLYBARS
504Rone is offline        Reply With Quote
Old 12-21-2012, 09:02 PM   #9
flyinghigh450
Registered Users
 
Posts: 4,086
 

Join Date: Sep 2010
Location: Shelby Twp,Mi
Default

BTW,
I was only getting 4 mins max with 5000mAh packs running 2050RPM goved..4400mAh would be about perfect like theflyingman2...
__________________
Team Align
flyinghigh450 is offline        Reply With Quote
Old 12-21-2012, 10:18 PM   #10
504Rone
Registered Users
 
Posts: 2,524
 

Join Date: Sep 2008
Location: New Orleans
Default

4400 are perfect for the 700e. They are liter and you get the same flight time as 5000.
__________________
NO FLYBARS
504Rone is offline        Reply With Quote
Old 12-21-2012, 10:23 PM   #11
ddj74
Registered Users
 
Posts: 2,333
 

Join Date: Dec 2011
Location: Winter Haven, Florida 33880
Default

I would say no less than 45c rating but mah isn't important other then getting proper CG. Less mah would be less flight time but you can fly hard 3D with 3000 mah packs but not 3000 mah packs rated with 25c. I think ideal is 4400 and up. So yes if your lipo's are rated around or above 45c you should be fine.
__________________
GOBLIN 770 / AR7200BX / KDE 700XF 455 G3
ICE2 160HV / MKS HBL980 & HBL950
AMA #1039539
ddj74 is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 700 Class Electric Helicopters


700 Class Electric Helicopters 700 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Copyright © 2004-2011 - William James - Helifreak.com