Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 250 Class Electric Helicopters


250 Class Electric Helicopters 250 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


Reply
 
Thread Tools Display Modes
Old 06-01-2011, 07:09 PM   #1
400 flyer
Registered Users
 
Posts: 1,099
 
My HF Map location
Join Date: Jul 2006
Location: maryland, usa east cost.
Default battery temp. ?

hi guys, i was just flying my 250 for about 4 mins and battery temp is 140 is that to hot??

im useing the scorpion motor ,,cc 25 esc,, nrg 800ma battery.
__________________
2-evo 50's>1-sdx>hawk pro bell 222 /3g/rjx>evo90>freya 70.
trex500esp, scorpion/ ice 75/ 3g/rjx>hirboo embla 450 fbl,ice50,>lepton ex
2 bl mcpx's
futaba 8fgs,,dx7,,phoenix v3.0r

Last edited by 400 flyer; 06-01-2011 at 07:13 PM.. Reason: added what i was useing.
400 flyer is offline        Reply With Quote
Old 06-01-2011, 07:20 PM   #2
newbheliusr
Registered Users
 
Posts: 7,750
 

Join Date: Apr 2011
Location: Mountlake Terrace, Wa
Default

Seems hot. How many C is the battery? If it's less than 20 I think that may be the problem. I have an eflight 800mah battery. It doesn't say it's c rating, but I am almost sure it's 15. And that battery comes down pretty darn warm. I don't think it's 140 though. That is pretty darn hot I think. but I am new.
newbheliusr is online now        Reply With Quote
Old 06-01-2011, 08:00 PM   #3
400 flyer
Registered Users
 
Posts: 1,099
Thread Starter Thread Starter
 
My HF Map location
Join Date: Jul 2006
Location: maryland, usa east cost.
Default

its rated at 35c .

heres the battery i have.
http://helidirect.com/outrage-nrg35-...ma-p-17067.hdx

__________________
2-evo 50's>1-sdx>hawk pro bell 222 /3g/rjx>evo90>freya 70.
trex500esp, scorpion/ ice 75/ 3g/rjx>hirboo embla 450 fbl,ice50,>lepton ex
2 bl mcpx's
futaba 8fgs,,dx7,,phoenix v3.0r

Last edited by 400 flyer; 06-01-2011 at 08:05 PM.. Reason: added pic.
400 flyer is offline        Reply With Quote
Old 06-01-2011, 08:27 PM   #4
newbheliusr
Registered Users
 
Posts: 7,750
 

Join Date: Apr 2011
Location: Mountlake Terrace, Wa
Default

I think you should let someone more experienced than I comment. It sounds like you do some hard flying to get a battery that warm. I am too new to comment. Sorry.
newbheliusr is online now        Reply With Quote
Old 06-02-2011, 09:15 AM   #5
tonydig11
Registered Users
 

Join Date: May 2010
Location: Pittsburgh PA
Default

i fly a 30c pack and it comes down worm but not hot
__________________
Align T-Rex 550E FBL with CNC tail upgade,ICE 100, viper 1300,beastx with edge 523's
Align T-Rex FBL 3G 250 SE , viper 3600kv
Align T-Rex 600n FBL, CNC tail upgrade, OS55, 3Gx
tonydig11 is offline        Reply With Quote
Old 06-03-2011, 06:33 AM   #6
ahahn
Registered Users
 

Join Date: Aug 2010
Location: Chicago 'burbs
Default

I've read that anything over 130 degrees F is bad for the pack.

A high C rating should be coming down cool, not hot.

Something sounds screwed up.

Let me change that second sentence to

A true high C pack will be coming down cool, not hot!

Last edited by ahahn; 06-03-2011 at 09:00 AM..
ahahn is offline        Reply With Quote
Old 06-03-2011, 07:55 AM   #7
zeeflyboy
Registered Users
 

Join Date: Oct 2009
Location: UK/Switzerland
Default

That does sound hot - what settings do you have on your castle ESC? pwm for scorpion should be low (8khz), and which pinion are you using? Are you using govenor? What battery connectors?

I have same setup, with 15t pinion and 4,400 rpm set in the govenor, but with 800mah 20C lipos and they come down warm but not hot.
__________________
Blade mCP X - Brushless, XP-7A, HP05S
Gaui X2, BeastX/Scorpion 3400kv/YGE-30A/GS-093/DS95i
Align AH-1 Cobra (T-Rex 500)
Align T-Rex 600 EFL Pro, SK720/600MX/YGE-90HV/BL9180/BL9188
zeeflyboy is offline        Reply With Quote
Old 06-03-2011, 09:23 AM   #8
400 flyer
Registered Users
 
Posts: 1,099
Thread Starter Thread Starter
 
My HF Map location
Join Date: Jul 2006
Location: maryland, usa east cost.
Default

Quote:
Originally Posted by zeeflyboy View Post
That does sound hot - what settings do you have on your castle ESC? pwm for scorpion should be low (8khz), and which pinion are you using? Are you using govenor? What battery connectors?

I have same setup, with 15t pinion and 4,400 rpm set in the govenor, but with 800mah 20C lipos and they come down warm but not hot.
im running the 8khz plus 5* timming and useing mini dean plugs on all my 250 batterys, and no govenor.and useing a 15t pinion.

i have no binding anywere gear mesh is good. i have another 800 pack plus a 860 pack im going to run and see if they get hot. if not then its the battery , if so then i have other probloms.
__________________
2-evo 50's>1-sdx>hawk pro bell 222 /3g/rjx>evo90>freya 70.
trex500esp, scorpion/ ice 75/ 3g/rjx>hirboo embla 450 fbl,ice50,>lepton ex
2 bl mcpx's
futaba 8fgs,,dx7,,phoenix v3.0r

Last edited by 400 flyer; 06-03-2011 at 09:24 AM.. Reason: added info
400 flyer is offline        Reply With Quote
Old 06-03-2011, 10:00 AM   #9
QueadlunnRau
Registered Users
 
Posts: 818
 

Join Date: Dec 2009
Location: Seattle, Wa
Default

Looking at the review of that battery at helidirect, someone says it's more like 15c then 35c. Which would make sense on why it's hot.

I used to only run the Outrage 860mAh 35c's which were awesome till 3 of them had bad cells (After over 50 uses each so I'm not really complaining), never ran the 800's tho.

I run Align 30c's and still have an outrage 860mAh 35c and they both come down slightly warm well under 110deg F. I'm at a 15t pinion with stock motor/esc and used to run a 16t with same battery temp.
__________________
Chopper Crew: MCX S300, T-Rex 150 DFC, T-Rex 250 DFC, T-Rex 450L Dominator, T-Rex 550e DFC

Multi Chop Crew: Nano QX, 200 QX, Diatone FPV250, Scratch V-Tail 355
QueadlunnRau is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 250 Class Electric Helicopters


250 Class Electric Helicopters 250 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 © 2004-2015 by RCGroups.com, LLC except where otherwise indicated. The HeliFreak.com logo is a trademark of RCGroups.com, LLC.