Help me in Buying my first rc truck

Started by dhaksha_dx, September 24, 2011, 04:16:41 PM

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dhaksha_dx

#25
Ordered a battery pack from HK > Turnigy 5000 mAh 2s Hardcase Lipo.

[Moderator Edit] Please avoid the excessive use of uppercase letters. It look like you are shouting. The post has been edited]
Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

dhaksha_dx

Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

rajathv8


traxxrc1

I'll be back.

dhaksha_dx

the esc can handle upto 8.4 volts and the 2s lipo is just 7.4volts
Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

Divyam

But the ESC does not have a LiPo cutoff. You can still use LiPos, but you're gonna need an external BEC or you're going to have to constantly monitor the voltage.
Thunder Tiger Phoenix BX
Associated RC18T2/B2 Kit
Walkera 5G4Q3
TechOne Angel
Hiller 450 v2
Futaba 7c 2.4Ghz
Slash 4x4 (sold)

dhaksha_dx

so that means that i cannot just directly connect the batt to esc and run it.
Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

dhaksha_dx

anyones got an external bec , i want to buy one locally
Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

Divyam

You can, but you run the risk of running your LiPo below 6volts. That could permanently damage your lipo.
Thunder Tiger Phoenix BX
Associated RC18T2/B2 Kit
Walkera 5G4Q3
TechOne Angel
Hiller 450 v2
Futaba 7c 2.4Ghz
Slash 4x4 (sold)

iamahuman

#34
You need an external Lipo module. Either a buzzer or a cutoff. LRP makes a BEC cum lipo cutoff module... A cutoff is safer because the buzzer can't be heard at all times.

Don't confuse a BEC with a lipo cutoff module. A BEC turns the voltage down to make it safe for the Rx. A lipo cutoff module measures voltage and cuts power off when the voltage goes below the LVC value...
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

Divyam

Thunder Tiger Phoenix BX
Associated RC18T2/B2 Kit
Walkera 5G4Q3
TechOne Angel
Hiller 450 v2
Futaba 7c 2.4Ghz
Slash 4x4 (sold)

iamahuman

Hahahha... you don't have to be sorry dude ;)

You were helping him out...
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

Quote from: iamahuman on October 09, 2011, 02:59:57 PM
You need an external Lipo module. Either a buzzer or a cutoff. LRP makes a BEC cum lipo cutoff module... A cutoff is safer because the buzzer can't be heard at all times.

Don't confuse a BEC with a lipo cutoff module. A BEC turn the voltage down to make it safe for the Rx. A lipo cutoff module measures voltage and cuts power off when the voltage goes below the LVC value...

Thats really descreptive gandhar,Bravo
I'll be back.

rajathv8


iamahuman

I believe they they are speaking of the brushless version....
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

Quote from: rajathv8 on October 09, 2011, 11:48:45 PM
The posts on urc say xt has a built in lipo cutoff?
http://www.ultimaterc.com/forums/showthread.php?t=132912&page=3

Even we are telling you that xt dosent have built cutoff why don't you rather trust us brother ...
When I was new to rc and got my sparrow xt and ran old lipo I ended up smoking the lipo. So mine din had one and I guess they all don't.
I'll be back.

rajathv8

They were talking about the phoenix XT and not sparrowhawk XT. My bad :D

dhaksha_dx

Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

dhaksha_dx

 >:( sounds like this one goes up for sale http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10098
2s 20C 5000Mah Hardcase 2s turnigy Lipo ROAR approved. Cost Rs 1600 coz  Brand new nevere opened or used + no waiting for shipping
>:(
reason for selling -> actually bought it for my sparrowhawk xt but now that it does not have a lipo cut off  i have no other choice other than selling it  >:(  >:(  >:(  >:(
:'( :'(
Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

iamahuman

I can't find ANY LVC modules on HK :headscratch:
btw, the UBEC linked in Reply #42 will not work.
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

dhaksha_dx

Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

dhaksha_dx

Planes:-
Multiplex Easystar II || 50 inch Brusheless 4ch Trainer.  ||  GWS Slowstick Clone.

Helicopters:-
Hiller 450 v3.

Cars:-
Thunder Tiger Sparrowhawk XT. 

Radio :-
HK T6A v2:.  ||  ACE Cougar 3 ch Surface Radio.

iamahuman

"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.